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| The
Spectacular Rise and Fall of Commodore |

Variant Press
143 Goldthorpe Crescent
Winnipeg, Manitoba
R2N 3E6
Canada
Copyright © 2005 by Brian Bagnall. All rights
reserved, including the right of reproduction in
whole or in part in any form.
Photographs courtesy of R.J. Mical, Dave Haynie,
Chuck Peddle, and Bil Herd. Designed by Mike Newton.
Manufactured in Canada.
Library and Archives Canada Cataloguing in Publication.
Bagnall, Brian, 1972-
Stumbling giant: the spectacular rise and fall of
Commodore/Brian Bagnall.
Includes bibliographical references.
ISBN 0-9738649-0-7
Thanks to everyone who helped make this book better:
Cameron Davis, Denny Atkins, Gareth Knight, Henry
Makow, Ian Matthews, Jim Brain, Jim Butterfield,
Martin Goldberg, Robert Bernardo, and Winnie Forster.
|
| » Contents |

| Introduction |
vii |
| Prolog: The Rise of Commodore |
ix |
| 1. MOS Technology, 1974 to 1976 |
1 |
| 2. The Acquisition, 1975 to 1976 |
26 |
| 3. The PET, 1976 to 1977 |
37 |
| 4. Releasing the PET, 1977 to 1978 |
63 |
| 5. The Trinity, 1977 to 1979 |
86 |
| 6. Business is War, 1979 to 1980 |
113 |
| 7. The Color Computers, 1979 to 1980 |
129 |
| 8. The VIC-20, 1980 |
157 |
| 9. Computers for the Masses, 1981 |
188 |
| 10. The Race to a Million, 1981 to 1983 |
206 |
| 11. The Secret Project, 1981 |
224 |
| 12. The Commodore 64, 1982 |
243 |
| 13. Selling the Revolution, 1982 |
261 |
| 14. Commodore Mania, 1983 |
282 |
| 15. TED, 1983 |
304 |
| 16. Dismissing the Founder, 1984 |
327 |
| 17. The Sequel, 1984 |
349 |
| 18. Brawling for the C128, 1984 to 1985 |
370 |
| 19. The Savior of Commodore, 1982 to 1985 |
394 |
| 20. The Amiga, 1985 to 1986 |
426 |
| 21. Dropping the Ball, 1985 to 1987 |
458 |
| 22. The New Amigas, 1986 to 1987 |
482 |
| 23. A Radical New Direction, 1988 to 1992 |
510 |
| 24. The Fall of Commodore, 1992 to 1994 |
536 |
| Epilogue |
549 |
| Bibliography |
558 |
|
| » Introduction |

"Do you remember? I do." - Bouncing
Souls, '87
Commodore Business Machines ended operations on
April 29, 1994. A decade has now passed. What has
Commodore meant to the world?
Amid the chaos, infighting, and excitement, Commodore
was able to achieve some remarkable industry firsts.
They were the first major company to show a personal
computer, before even Apple and Radio Shack. They
sold a million computers before anyone else. The
first true multimedia computer came from Commodore.
Yet with all these firsts, Commodore receives almost
no credit as a pioneer.
The history of early computers has tended to focus
on Microsoft, IBM, and Apple, snubbing contributions
made by Commodore. "There is a lot of revisionism
going on and I don't think it's fair," says
Commodore 64 designer Robert Yannes. "People
wanted to ignore Commodore."
An early-popularized story of the microcomputer
revolution was Accidental Empires, by Robert X.
Cringely (born Mark Stephens). The former Apple
employee perpetuated a select view of the microcomputer
revolution, a view that not everyone accepts as
accurate. In Infinite Loop, Michael Malone writes,
"The pseudonymous Cringely is notorious for
his sloppy way with facts." In his book, Cringely
said, "Commodore wasn't changing the world;
it was just trying to escape from the falling profit
margins of the calculator market while running a
stock scam along the way." In reality, Commodore
employees worked tirelessly to deliver state of
the art technology to their customers at a price
far lower than Apple's. PBS adapted Cringley's book
as a popular TV series, Triumph of the Nerds (1996).
The adaptation ignored Commodore completely. Turner
Network Television produced a movie called Pirates
of Silicon Valley (1999), based on a more credible
book, Fire in the Valley, by Paul Freiberger &
Michael Swaine. Regrettably, the producers ignored
much of the book and focused on Steve Jobs, Bill
Gates, and IBM. "The PC came out,
we changed players, and the whole early history
just got lost," says PET designer Chuck Peddle.
Peddle deplores the emphasis on IBM, Apple, and
Microsoft at the expense of earlier developers.
"None of that is true. It's not fair that the
stuff that happened earlier has been so badly ignored."
"I'm not sure it's intentional, it's just the
West Coast mindset that everything happens on the
West Coast, so we don't even need to pay attention
to what happened everywhere else," says Yannes.
"Most of the revisionist stuff I read was coming
out of California and Commodore was mostly successful
after it left California."
When writers are not ignoring Commodore, they often
get their facts wrong. In The Silicon Boys and their
Valley of Dreams, David Kaplan describes the Apple
IPO in 1980 and then adds, "But Apple soon
bred competition. Radio Shack and Commodore and
even Atari, among others, started selling their
own personal computers." In truth, Commodore
and Radio Shack began selling personal computers
in 1977, and Atari followed in 1979. This rosy picture
of Apple starting the microcomputer industry could
not be further from the truth. Apple had a very
slow start and eventually climbed to first place
sometime in the early 1980's, only to lose their
lead to Commodore once again. In the very earliest
days, Commodore was pioneering the consumer microcomputer
industry.
While IBM pushed business computers and Apple pushed
style, Commodore put computers into the hands of
ordinary consumers. Throughout the eighties, Commodore
consistently had the best prices, often with the
best technology. The Commodore 64 is the Model T
of computers, selling more units than any other
single computer model, according to the Guinness
Book of World Records.
In the summer of 2004, I began interviewing Commodore
insiders. We traveled back to the seventies, eighties,
and nineties and relived the Commodore experience.
I am thankful to each of the participants for taking
me on that journey, something I will never forget.
The journey has ended for me, but for you it is
about to begin. I hope you enjoy reading this book
as much as I enjoyed writing it.
Brian Bagnall
May 22, 2005 |
| » Prologue:
The Rise of Commodore |

Hailing a taxi in New York City in the early 1950's
might have put you in the company of future business
titan Jack Tramiel. As you sat in the back seat,
two large, bulging eyes would appraise you through
the rear view mirror, determining if you were worth
anything to him. At the time, Tramiel was positioning
himself for riches and glory. It was a humble beginning,
but driving a taxi was a blissful step up from the
work camps of Poland during World War II. In July
1947, a 19-year-old Idek Tramielski proposed to
and married a fellow concentration camp survivor
named Helen Goldgrub in Germany. While there, the
Hebrew Immigrant Aid Society (HIAS) contacted Idek
and helped him emigrate from Europe by paying for
his passenger liner ticket to New York City. Idek
changed his name to Jack Tramiel. In 1948, Tramiel
enlisted in the U.S. Army and served as a cook at
Fort Dix. Later, he joined the First Army Office
Equipment Repair Department, which was responsible
for maintaining and repairing almost 25 thousand
pieces of office equipment. Jack served two tours
of duty in Korea in 1950 and in 1952.
After his service ended, Jack worked for a typewriter
repair company called Ace Typewriter. There, he
met Manfred Kapp, and the two started
their own repair company called Singer Typewriter.
In 1958, Jack, Manfred, and their families moved
to Toronto, Canada and formed a typewriter manufacturing
company called Commodore. The company quickly grew
until a scandal rocked the Canadian financial scene,
with Commodore at the center. After an embarrassing
public inquiry, Commodore was finished; or so it
seemed.
In 1966, a Canadian Investor named Irving Gould
purchased Commodore and redirected Jack Tramiel
into the burgeoning calculator business. By 1973,
savage competition from Texas Instruments and Japanese
calculator manufacturers began hurting Commodore's
profits. Jack began to look elsewhere for cheaper
calculator parts. |
| » Chapter
1: MOS Technology, 1974-1976 |

Hi-tech companies need three players in order to
succeed: a financier, a technology-God, and a juggernaut
with a type-A personality. Commodore would require
these three ingredients to take them to a new level.
They had Irving Gould, with his financial expertise
and deep pockets. They had Jack, so aggressive people
sometimes referred to him as the scariest man alive.
All Commodore needed was a visionary engineer to
take Commodore into a new field of technology.
The Grey Wizard
of the East
In the 1970's, the image of a computer genius was
not in the mold of the young hacker we are familiar
with today. Teenaged tycoons like Bill Gates had
not filtered into the public consciousness, and
WarGames (1983, MGM) was not yet released, with
the prototypical computer hacker portrayed by Matthew
Broderick. The accepted image of a technological
genius was a middle-aged man with graying hair and
glasses, preferably wearing a long white lab coat.
Chuck Peddle was the image of a technology wizard,
with his wire-frame glasses, white receding hairline,
and slightly crooked teeth. At two hundred and fifty
pounds, the five foot eleven inch engineer always
struggled with his weight. Peddle describes himself
at that time as "totally out of shape,"
but he was characteristically optimistic and never
without a joke or story to tell.
Peddle possessed the ability to see further into
the future than most of his contemporaries and he
obsessively searched for the next big innovation.
His mind was always active, sometimes to the point
of causing sleep deprivation. "I don't sleep
much," says Peddle. "Never did."
In fact, the pattern of sleeplessness went back
to his earliest days.
Peddle's father was one of 21 kids. His family originated
in the Canadian Maritimes but the poor region made
it difficult to support a family. "The whole
area is very depressed," says Peddle. The family
moved to the United States in search of a better
economy. Charles Peddle was born in Bangor Maine
in 1937, one of eight children. "My mother
said that when I was young I used to lie awake in
my crib. I would cry and fuss and didn't sleep as
much as the other kids," he says. Peddle was
raised in the state capital of Augusta, Maine, with
a population of just over 20,000. Unfortunately,
the move from the Maritimes to Maine only marginally
improved the family prospects. "There is a
tremendous amount of leakage across the border [from
the Maritimes]," he says. "People are
willing to work for nothing because they are starving
to death at home. So it keeps wages down [in Maine]
and it's always been a poor state."
In his senior year of high school, Chuck thought
he found his calling. "In high school I worked
in a radio station," he says. "I really
wanted to be a radio announcer. For you, now, that
really doesn't mean very much, but back then that
was pre-TV and radio announcers were big."
Nearing the end of high school, Chuck traveled to
Boston to try out for a scholarship in broadcasting.
For the first time in his life, he saw his competition
and realized he did not have enough natural talent.
With a sense of relief, he recalls, "I failed
as a radio announcer." Returning to Augusta,
Chuck talked things over with the radio station
owner, who told him, "I'll employ you as a
radio announcer, but you will always be stuck in
Maine because you are not good enough."
Peddle spent some time in the military as he contemplated
his future. "I went into the Marine Corps just
before I got out of high-school in 1955 and I went
in active reserves in 1960," he recalls. During
this time, Peddle's former science teacher recognized
a gift in Peddle and encouraged him to enter engineering.
Peddle listened to his advice, but was unsure he
wanted to enter the sciences. "I didn't want
a pick and shovel job," he says. "I wasn't
sure what I was going to do and I was dirt poor.
Luckily, in Maine you can be dirt poor and still
get by." Unable to earn enough to pay for tuition
fees, he applied for student loans.
At the end of summer, Peddle entered the University
of Maine and enrolled in engineering and business
courses. "When I started, I didn't have a clue
what I wanted to do. I just knew I didn't want to
do pick and shovel jobs anymore," he says.
Partway through the first year, the university required
students to choose a discipline. "I really
loved physics, so I took engineering physics with
an electrical minor." Peddle remembers the
dismal state of computing. "There wasn't a
computer on campus, nor was there anyone on the
campus who was computer literate," he says.
In his final year, things began to change. "On
the entire campus, there was one analogue computer,
which had been bought in the last four months,"
he recalls. "The analogue computer was so primitive
and they didn't know how to use it. There was zero
knowledge about computers on that campus."
Peddle received a standard education in engineering,
devoid of computers. Over 200 miles away, at the
Massachusetts Institute of Technology (MIT), a revolution
was occurring which would soon change his situation.
Chuck Peddle's main influence was the legendary
inventor and mathematician, Claude Elwood Shannon.
Though virtually unknown to the world, Shannon was
the founding father of the modern electronic communications
age. Shannon was an eccentric, who terrified people
by riding his unicycle through the hallways at night
while juggling. Shannon also built a reputation
for inventions that were of little practical value
to anyone. Over the years, he filled his beachside
house with juggling robots, maze-solving robot mice,
chess playing programs, mind-reading machines, and
an electric chair to transport his children down
to the lake.
In 1948, while working at Bell Labs, Shannon produced
a groundbreaking paper, A Mathematical Theory of
Communication. In it, Shannon rigorously analyzed
the concept of Information Theory and how we transmit
pictures, words, sounds, and other media using a
stream of 1's and 0's. Chuck Peddle was enchanted
with Shannon's theories. "Today, you take this
for granted, but you have to remember that someone
had to dream all this up," he says. "Shannon
was one of those guys that dreamed up from nothing
the idea of the way information goes back and forth.
Everyone else's work stands on his shoulders and
most people don't even know it." In 1958, Shannon
returned to MIT at Lincoln Labs as a lecturer and
Artificial Intelligence researcher. While there,
he spread his concepts on Information Theory. "He
changed the world," says Peddle. "Shannon
was not only a pioneer but a prophet. He effectively
developed a following, almost like a cult."
One of Shannon's cultists would soon spread the
word to the University of Maine.
During Peddle's senior year, the University of Maine
accepted a lecturer from MIT who studied under Claude
Shannon. According to Peddle, "He had a nervous
breakdown, so he left MIT. The University of Maine
was so happy to get him because he was so superior
to the type of instructor they could normally get.
They gave him the opportunity to teach only four
classes per week between the hours of eleven o'clock
and noon. The guy was being totally babied and should
have been since he was a great instructor. He decided
to put together a class to teach people about Information
Theory." At the time, Peddle was enrolling
for his final year and the Information Theory class
happened to fit into his schedule. As Peddle recalls,
"It changed my life." The class began
with the instructor discussing the eyes and ears
as the primary sensors for receiving information.
"He started teaching us about Boolean algebra
and binary logic, and the concept of Information
Theory," recalls Peddle. "I just fell
in love. This was where I was going to spend my
life." "The whole thing about
how information moves back and forth is essential
to almost everything I've done," he says. However,
the topic that interested Peddle the most was computers.
"You have to understand how exciting it was,"
explains Peddle. "Information Theory was interesting,
and I've used it from time to time, but the computer
stuff this guy taught me was life changing."
Though this new revelation came late, Peddle immersed
himself in computer theory for his final year. "I
got an A on my senior paper in physics class by
giving a discussion on binary and Boolean arithmetic.
I was trying to build an and-gate in my senior class
[from early transistors] and the top electrical
engineers on campus couldn't help me figure out
the structures and why my and-gate didn't work,"
he recalls. Peddle and a friend even tried growing
a transistor crystal but soon gave up.
As graduation approached, Peddle began searching
for a place of permanent employment. He had married
while in College and already had a family. "I
came out of college and I had three kids; two and
a half, actually. I had the third one right after
[graduation]." The new responsibilities motivated
Peddle to find a better life. Peddle knew he wanted
to live in California and he wanted to work in computers.
"I only interviewed computer companies,"
he recalls. "At all of the companies of any
size, like GE and RCA, you went to work on a training
program for a year or two. You really were just
interviewing to join their training program."
Of all the companies, GE made the best impression
on Peddle. "I kind of fell in love with GE,"
he says. "When I got my offer, I thought I
would take it, because they had such a good training
program."
Peddle and his young family moved to California
to start a new life with General Electric. Before
long, Peddle was working at GE's computing facility
in Phoenix, Arizona. Peddle worked with massive
mainframe computers, similar to those seen in the
1965 film Alphaville. The first computer Peddle
used was a GE-225, which he describes as a "very
old, very slow machine with small capacity."
Peddle entered programs into the GE-225 computer
by feeding a stack of punch cards into a card reader.
Peddle recalls, "I would set up long six or
seven hour runs, drive across the city and go to
bed with the instructions, 'If this breaks, call
me.' People would wake me up in the middle of the
night, I would find a solution in ten minutes and
go back to sleep."
In 1961, Peddle and two of his coworkers developed
the concept for variable sector disk formatting.
They even filed a patent for their idea. Years later,
Peddle would use this idea to give Commodore disk
drives more data storage than the competition.
In 1963, John G. Kemeny developed the Basic computer
language at Dartmouth College in New Hampshire,
along with Tom Kurtz. They developed Basic for the
GE-235 mainframe computer, and as a result, Peddle
was almost immediately aware of it. "I taught
Basic the day after it was invented," claims
Peddle. "I got one of the original Basic manuals
from a guy in Dartmouth and taught my people in
Phoenix."
A year later, Kemeny and Kurtz created the revolutionary
Dartmouth Time-Sharing System (DTSS) for the GE-235.
With the time-sharing system, multiple users could
interact with the mainframe computer simultaneously
using terminals. General Electric immediately recognized
the value of this new system and used it to form
the basis of a new multi-million dollar business.
"Two years later, GE goes into the time-sharing
business," recalls Peddle. "They're selling
time-sharing to everybody and GE was selling more
computers than they could build. It was a big goddamned
deal."
With the time-sharing business suddenly ballooning,
General Electric sent Peddle to their largest computing
center in Evendale, Ohio to set up time-sharing
systems for General Electric's jet engine business.
The massive computer facility contained ten IBM-7094
mainframe systems, five GE-600's, and 25 GE-225's.
Peddle recalls, "We were running time-sharing
for about 4000 engineers and programmers."
The refrigerated computing facility seemed futuristic
in the mid-sixties, with white tiled walls, raised
floors, and rows and rows of mainframe computers.
Setting up the time-sharing systems was time consuming,
and Peddle often stayed at the computer facility
around the clock. During this time, Peddle picked
up a habit originated by GE founder Thomas Edison.
"I stole the idea of cots from him," he
says. "Everyone understood that if I'm tired,
I go to my office and take a half hour nap."
After Peddle set up the time-sharing systems, he
became administrator for two of the systems. The
experience gave Peddle valuable knowledge that he
would later use to develop his own computers. "I
got a really good understanding of what worked on
time-sharing and what didn't work, and what people
wanted," he says.
While working with GE, Chuck met John Pavinen and
Mort Jaffe, computer pioneers who would later become
involved with him at Commodore. "John Pavinen
was my manager at GE. He's the guy who put GE in
the computer business," says Peddle. "A
lot of the pioneers in the computer industry came
out of GE."
Peddle also remembers some darker moments in the
computer scene. "People used to be able to
get their hands on computers," he recalls.
"Then, in the late 60's and early 70's, there
was a big revolt against technology. People were
attacking computer centers with axes, claiming computers
were taking over our lives. We're talking about
serious hippy-type stuff. So all of the computer
rooms locked the doors." The need for security
drastically reduced the freedom people previously
enjoyed. "If you wanted to get a computer run,
you walked up with your punch cards and left them
on someone's desk," says Peddle. "They
went from these time-sharing friendly, I-can-do-everything
systems to having zero access to the computer."
Peddle detected a strong demand from users to own
their own computers.
The time-sharing business Peddle helped develop
at GE was phenomenally successful, but in the late
sixties, it started failing due to increased competition.
By this time, Peddle had risen to a high-level management
position. GE sent him to Phoenix to start another
time-sharing company. Suddenly, "Time-sharing
crashed; out of business; goodbye," says Peddle.
"Companies started figuring out how much money
they were spending on these time-sharing services
and it was millions. GE was just cleaning up, but
it just wasn't cost effective the way it was being
done, so companies kept cutting it off and they
moved the computers internally."
GE gave Peddle an assignment to work on cash registers,
which made Peddle start to think about the concept
of distributed intelligence. At the time, shared
computing kept the brains of the computer at one
central location and people could only interact
with the computer system using dumb-terminals (a
keyboard and monitor). Peddle envisioned distributed
intelligence, where he would transform the dumb-terminal
into an intelligent-terminal that could have a printer
connected to it, or other peripherals and data entry
devices. "I sat down and derived the principles
of distributed intelligence during a four-month
period," says Peddle. "There was a focus
on five or six stations around a minicomputer in
a centralized architecture. My concept was you moved
the intelligence to the place where you used it."
It was a step towards networked computers. "Then
I started trying to teach GE about it," says
Peddle. Unfortunately, in 1970 GE decided they were
no longer interested in computers. "I was getting
nowhere with GE because they were getting ready
to sell the computer business. Two months later,
they sold the company to Honeywell."
Peddle had the option to receive a severance package
or move elsewhere in GE. For Peddle, the decision
was easy. "Myself and two other guys took the
termination agreement. We said, 'This is found money,
so we're going to start our own business.' We had
already started on the cash register business, and
I had a deal with Exxon." The three partners
immersed themselves in their intelligent-terminals.
"We got it all done and actually built the
electronics that demonstrated the concepts,"
says Peddle. During this time, Peddle devised many
concepts that would have made him wealthy if he
chose to patent them. "We invented the credit-card
driven gasoline pump, the first credit verification
terminal [i.e. credit card scanners] and the first
point of sale terminal [i.e. computerized cash registers]."
Peddle now laments, "It's too bad we didn't
patent the shit out of it because we could have
been very wealthy as a result of that."
Peddle realized the intelligent terminal needed
a fundamentally new component to make their ideas
work. "We needed our own microprocessor,"
he says. This realization would lead Peddle on an
extraordinary journey that would change millions
of lives. At first, Peddle tried to develop the
technology within his fledgling company but it was
hopeless without funding. "We had everything
going for us, but we didn't know how to raise money,"
he says. It was time for Peddle and his team to
move on.
Chuck Peddle and his wife now had four children,
but the stresses of Peddle leaving his secure job
at GE caused the marriage to disintegrate. They
divorced in 1971. "I put a bag of clothes in
my [Austin-Healey] Sprite and drove away,"
he says. Within weeks, in what Peddle terms a 'planned
transition', Peddle remarried a voluptuous blonde
with two children from a previous marriage. "I
took some time out, because there was a change in
life; going through the divorce and all that,"
says Peddle. In 1972, Peddle tried to start a Word
Processing company using Digital Equipment Corporation
(DEC) time-sharing systems. "We actually did
the first on-line text processing system, setting
type for newspapers," he says. Peddle was too
early. "That company couldn't make it either."
The experience gave Peddle valuable knowledge he
would need to develop the next generation of microprocessors.
"I had done all the microelectronics and knew
why a microprocessor needed to happen, and how to
make a microprocessor, and how to make things that
used microprocessors," he says. "But I
didn't have a microprocessor because they weren't
around yet." In 1973, Peddle spotted an employment
ad from Motorola for their new microprocessor program
in Mesa, Arizona. He recalls, "I went down
and talked to the guy who was running the program,
who was a calculator guy." Peddle's experience
at GE won him the job. "He basically hired
me to finish the program." Chuck started work
at Motorola in 1973, around the time when Large
Scale Integration (LSI) of semiconductor technology
allowed the circuitry of a calculator or computer
to fit onto a single chip. As the Intel 4004 and
8008 processors were gaining popularity, Motorola
decided to enter the microprocessor market with
their own chips. A Motorola designer named Tom Bennett
created the original architecture for the 6800,
but Peddle felt it needed some changes. "They
kind of muddled their way through the architecture
for the 6800, which had some flaws in it. I was
able to fix some of those flaws but it was too late
for others," says Peddle. The final 8-bit microprocessor
had 40 pins, 4000 transistors and an instruction
set of 107 operations. Peddle also made a major
contribution to the project by designing the support
chips for the 6800. Computers had to interact with
peripheral devices like disk drives and printers,
so Peddle designed a specialized support chips for
this purpose. One chip to emerge was the 6820 Peripheral
Interface Adapter, which most people just called
the PIA chip. The 6820 became a major reason for
the eventual popularity of the 6800.
Although Motorola engineers grasped the importance
of what they had created, the management and salespeople
knew very little of microprocessors. According to
Peddle, some managers at Motorola even tried to
kill the project. "So I built a demo of the
chip using some of the hardware for my cash register
to show everybody that microprocessors really did
work," he says. The salespeople at Motorola
required an education on microprocessors but there
were no courses. "They didn't know how to sell
it, so I put together a training class for their
applications engineers," says Peddle.
Peddle was instrumental in making some of the first
deals for Motorola, including Tektronics, NCR (National
Cash Register company), Ford Motor Company, Unisys,
and Burroughs (makers of calculators). "I wound
up going into the field presenting the architecture
because I was the only one in the company who could
intelligently talk to customers and have architectural
discussions," he says. The presentations usually
ended the same way. "The guys would sit down,
we would explain the 6800, and they would just fucking
fall in love," says Peddle. However, the $300
price tag for a single 6800 processor prevented
engineers from adopting the 6800 microprocessor
in low cost products. According to Peddle, someone
would invariably say, "You're charging too
much for it. What I want to use it for is not to
replace a minicomputer. I want to use it to replace
a controller, but at $300 per device it's not cost
effective." Armed with this knowledge, Chuck
Peddle had an epiphany. He recognized the vast market
for cost-reduced microprocessors. Both Intel and
Motorola were overlooking an important market. Peddle
slavered at the possibilities. In August 1974, Motorola
publicly introduced the 6800 chip for $300. The
6800 would eventually become successful for Motorola,
in no small part to the efforts of Chuck Peddle.
It almost became too successful and Motorola saw
no reason to attack other markets.
Peddle pushed Motorola for a cost-reduced microprocessor.
According to Peddle, "One week I returned to
Motorola after one of these trips, and I had a letter
there, formally instructing me Motorola was not
going to follow a cost reduced product. I was ordered
to stop working on it," recalls Peddle. Undeterred,
Peddle wrote a letter (which he still owns today)
saying, "This is product abandonment, therefore
I am going to pursue this idea on my own. You don't
have any rights to it because this letter says you
don't want it." From that moment on, Peddle
stopped working on microprocessors for Motorola.
He continued teaching classes and finished the 6520
PIA chip he was developing, but his true focus was
finding a way to make his low-cost microprocessor.
While still employed at Motorola, Peddle tried raising
money to fund his microprocessor. He visited Mostek
(not to be confused with MOS Technology) and talked
to prominent venture capitalist L.J. Sevin of Sevin-Rosen
(responsible for funding startups like Compaq, Lotus,
Cyprus, and Mostek), but he was not interested in
Peddle's idea. Peddle continued talking to people
in the semiconductor business. One day, Peddle ran
into an old friend from GE who now worked at Ford
Motor Company. His friend mentioned John Pavinen,
another ex-GE employee who was now running a semiconductor
company near Valley Forge, Pennsylvania. "When
I started looking around for partners, I knew Pavinen
was a killer computer guy," he recalls. "I
called him up. He said, 'Come on down. Let's talk
about it.'"
Peddle flew to Pennsylvania to examine MOS Technology.
The facility was located at 950 Rittenhouse Road,
a 14-acre site in an industrial park, called the
Valley Forge Corporate Center. Peddle was impressed
with the small firm. It had good credentials and
many customers, among them a calculator company
named Commodore. Satisfied, Peddle sat down to discuss
his new project with John Pavinen. "Pavinen
immediately loved the idea of doing the product,"
says Peddle. The two discussed the specifications
for the microprocessor, but MOS Technology was only
capable of manufacturing chips using the P-channel
process. Peddle wanted the more advanced N-channel
process. Pavinen felt he could deliver the N-channel
process. "He had taught himself process development
when he was working at General Instrument, and was
really good at it," says Peddle. "He considered
himself to be a competitor to [Andrew] Grove [of
Intel]. He was convinced he could do a five-volt
N-channel process in the same amount of time it
would take me to develop the microprocessor."
The partnership between Chuck Peddle and John Pavinen
seemed to hold promise. For his part, Pavinen badly
needed a new product to replace the shrinking calculator
market. MOS Technology engineer Al Charpentier describes
the situation that caused MOS Technology to accept
Chuck Peddle's proposal. "Here's a company
that is somewhat dying, and the calculator margins
are shrinking," he says. "They wanted
market share." Pavinen told Peddle, "Move
your people and we'll set up a second group within
the company. You run your own show."
As Motorola publicly unveiled the 6800, Chuck Peddle
and seven coworkers from the engineering and marketing
department left Motorola to pursue their own vision.
The team included Will Mathis, Bill Mensch, Rod
Orgill, Ray Hirt, Harry Bawcum, Mike James, Terry
Holt (Terry later became president of S3, a semiconductor
company that supplied a popular all-in-one chipset
for IBM PC compatible computers), and Chuck Peddle.
The departure of several of Motorola's top engineers
seriously drained the company of much needed expertise
on the eve of the 6800 debut. Pavinen gave Peddle
and his team a stake in the company. "The deal
was, if the microprocessor took off, we would have
a piece of the company," he recalls. On August
19, 1974, the team started work on their new processor
at MOS Technology. With Chuck Peddle and his band
of engineers, MOS Technology would radically change
the market for computers. MOS
Technology
In 1969, a large industrial manufacturing company
called Allen-Bradley wanted to enter the new semiconductor
business. They financed the creation of MOS Technology.
The three men who founded and operated the new startup
had previously worked with Peddle at GE. They were
Mort Jaffe, Don McLaughlin, and John Pavinen. For
the first five years, MOS Technology supplied calculator
chips and other semiconductor parts to the electronics
industry. Then Chuck Peddle and his team of ex-Motorola
employees began working on a revolution within the
microprocessor industry. This revolution would occur
at Valley Forge, Pennsylvania on the East Coast,
approximately 100 miles inland from the Atlantic
Ocean and 20 miles from Philadelphia. It was an
appropriate place for a revolution. Almost 200 years
earlier, Valley Forge was the turning point in the
American Revolution when General George Washington's
tired and bloodied troops retreated to Valley Forge
for the winter, only to emerge with an unwavering
offensive. Chuck and his band of engineers would
also retreat for the winter, and in the following
summer, they would unleash a powerful new weapon.
In the seventies, Valley Forge was a small, dispersed
town with a population of about 400 people. MOS
Technology headquarters resided in the peaceful
setting, along a lone country road surrounded by
wildlife. Street names like Adams Avenue, Monroe
Boulevard, Madison Avenue, and Jefferson Avenue
celebrated the revolutionary past. Directly across
the road from MOS was a beautiful golf course, General
Washington Country Club, tempting the MOS executives
to squeeze in a round of play. Less than a mile
away was the Audubon Wildlife Sanctuary, a park
filled with serene trails where Canadian geese gathered
in the fall while migrating south. Horse trails
snaked in and out of the surrounding countryside.
Riders would often emerge from the bushes and stare
at this out of place high-tech firm. They could
scarcely understand what was going on inside.
The headquarters hearkened back to the 1950's. It
was a box-shaped two-story building with glass windows
along the front and sides. Stray golf balls frequently
bounced off the front windows, occasionally leaving
small bullet sized holes that no one ever repaired.
To the side and rear of the building were two huge
parking lots, largely deserted since most people
preferred to use the circular driveway out front.
The engineering lab on the second floor was the
fountainhead of ideas for the company. This was
where engineers invented the semiconductor chips.
The engineers subdivided the lab into a maze of
smaller rooms, each with a specific task. It was
in this environment that Chuck Peddle would plan
the centerpiece of his revolution. Although Peddle
envisioned a true microprocessor, it is a delicious
irony that he did not design it for computers. "It
was never intended to be a computer device. Never
in a million years," he reveals. Instead, he
envisioned the microprocessor for home electronics,
home appliances, automobiles, industrial machines
– just about everywhere except personal computers.
"If we were going to do a computer, we would
have done something else."
Price was the key to achieving widespread use of
his microprocessor. Peddle envisioned a series of
processors of varying size and complexity. The full
featured microprocessor would sell for between $20
and $25. This meant the actual production cost could
not exceed $12; otherwise, it would be unprofitable.
(Generally, the manufacturer doubles the manufacturing
cost when selling to a dealer, who then doubles
the price again to sell to the consumer. Since MOS
Technology would sell the microprocessor directly
without an intermediary, they only doubled the manufacturing
cost once.) With microprocessor economics, MOS desperately
needed to sell high volumes of chips to overcome
their design costs. According to Al Charpentier,
the burgeoning microprocessor industry was having
problems establishing itself. "You've got a
new technology that everybody is interested in but
it's not taking off," he explains. "The
numbers back then were tiny. They were scientific
curiosities because they were so expensive. So [MOS]
wanted to drive the interest level way up, and that's
how the $20 price tag got hammered in."
The price seemed unreasonably low compared to Motorola.
"We wanted to own the market," says Peddle.
"If you want to own a market, you take a price
point that you make good money at, and you make
sure nobody else can play with you. You build big,
fast companies that way." When asked why he
did not chose a slightly higher price, say fifty
dollars, Peddle says, "Because then I don't
get the design in. At twelve bucks and fifteen bucks
and twenty bucks I get design-ins everywhere."
Peddle was after widespread success. "We wanted
people to put microprocessors everywhere. We were
trying to change the world." The ex-Motorola
employees split into three groups, each with their
own areas of expertise. "We came in and effectively
took over two or three rooms, and operated totally
independent of the rest of the company for a long
time," says Peddle. Making
Chips
Chuck Peddle, Will Mathis, and Rod Orgill would
collaborate to design the initial architecture for
the new microprocessor. "It was just the perfect
product, the perfect time, the perfect team,"
says Peddle. The architects' task was similar to
designing a small city, except the streets in this
city would be paved with metal. Electrons would
inhabit their city, traveling the streets until
they reached a transistor. Timing within this little
city would be critical, otherwise traffic would
halt, causing the chip to lock up.
Peddle and his group intentionally numbered their
chips starting with 6500, so it would sound similar
to the Motorola 6800. "It was a cheaper version
of the 6800 and there was intended to be a whole
string of them," he explains. "In hindsight,
with many years and lawsuits behind us now, it was
designed to sound like the 6800."
The first chip in the series was the 6501, which
could drop into a 6800 slot. "It was definitely
not a clone," says Peddle. "Architecturally
it's a 6502. The only difference is it plugs into
Motorola socket." Peddle explains the 6501
strategy. "We were competing in a market where
we were selling to people who might have bought
the 6800," he says. "Having a plug-in
compatible version was just a marketing game."
Unfortunately, socket compatibility would later
provoke Motorola. The centerpiece of their project
was the 6502 microprocessor. "The 6502 was
what we were driving for," he says.
To create the architecture of the chip, the three
engineers created a simple diagram to represent
the structure of the chip. "We would start
with a basic block diagram," says Peddle. Some
of the most important design work took place away
from MOS Technology. "We put some of the more
significant stuff in while drinking booze at Orgill's
house one night," says Peddle. "The way
to do really creative work is to work on it and
then sometimes you've got to let it alone. If somebody
gets a bright idea at a party, you take time out
and you go argue about it. We actually came up with
a really nice way of dealing with the buses that
came out of a discussion at Orgill's."
Al Charpentier was one of the calculator chip designers
at MOS Technology. He witnessed Peddle driving his
team to build the new processor. "Chuck was
an interesting character," he recalls. "He
could be a bit pompous, but he had a vision and
he was pushing that vision. Chuck was the visionary."
Peddle created a concept called pipelining, which
handled data in a conveyor belt fashion. Instead
of stopping while the microprocessor performed the
arithmetic, the chip was ready to accept the next
piece of data right away, while internally it continued
processing data. This feature would make the chip
faster than anything produced by Intel or Motorola
at the time. A one-megahertz 6502 was equivalent
to a four-megahertz Intel 8080.
The semiconductor team not only developed a microprocessor,
they also developed the supporting chips. The first
was the 6520 PIA chip, which was a clone of the
Motorola 6820 PIA. One chip, called the 6530, contained
1 kilobyte of ROM, 256 bytes of RAM, a timer, and
two IO ports. This allowed engineers to assemble
a complete computer using only two chips. The team
also developed 128-byte 6532 RAM chips. One by one,
the architects passed their designs to the layout
people. The layout team consisted of two main engineers:
Bill Mensch and Rod Orgill. A third engineer, Harry
Bawcum, aided the layout artists. It was their task
to turn an abstract block diagram into a large-scale
representation of the surface of the microprocessor.
Orgill was responsible for the 6501 chip, Mensch
the 6502.
Chuck Peddle originally hired Mensch at Motorola
after Mensch graduated from the University of Arizona.
"Mensch was literally right out of school,"
says Peddle. One of eight children, Mensch grew
up in a small farming community in Pennsylvania.
According to Mensch, "I lived on a dairy farm,
got up at 4:30, milked the cows, and went off to
school." (The quote is from an interview with
William Mensch by Rob Walker, Silicon Genesis: An
Oral History of Semiconductor Technology. (Atherton,
California, October 9, 1995)) At Motorola, Peddle
was impressed with Mensch's natural talent. "He
was just spectacular doing N-channel design and
layout. He was the worlds best layout guy,"
raves Peddle. Mensch was dependable, which made
him a favorite with MOS engineers. "Bill was
a good guy," says Charpentier. "He was
very knowledgeable and knew what he was doing."
Rod Orgill, the youngest member of the team, worked
at Motorola on the fabrication process of the 6800.
Out of everyone on the team, Orgill had the most
diverse set of abilities. Peddle relates, "Rod
was a combination of chip designer and architect."
For the first time in his life, Orgill would acquire
layout abilities as an understudy to Mensch. Peddle
claims the 6501 was a marketing game, but Rod Orgill
believed the 6501 would be more successful than
the 6502. According to Mensch, "We made a bet
and said who's going to have the highest volume
and Rod says, 'There's no question: following Motorola's
marketing, the 6501 will surpass your [6502] design
and yours won't even have a chance.'"
The small group of young engineers worked in a small
room on the second floor containing several large
art tables. Here, Mensch and Orgill brooded over
thick sheets of vellum paper. The layout consisted
of thousands of polygons, each a specific size and
shape. Thin lines called traces connected the polygons,
creating a complex circuit. Incredibly, the engineers
created the layout in pencil, one component at a
time. The task was formidable, with a completed
diagram containing approximately 4,300 transistors.
(In contrast, the Intel Pentium 4 released in 2000
has 42 million transistors.)
Near the end of the design process, disaster struck.
The engineers realized their architecture would
not fit within the allotted area of the microchip.
"When we sat down to optimize the system, we
discovered we were 10 mills too wide," says
Peddle. "The design was almost done. Mathis
and I put a big piece of paper down on a table and
sat there and optimized every line until we got
rid of 10 mills." The engineers were on a tight
deadline to have the product ready for the upcoming
Wescon show in September. They obsessively searched
for ways to recycle lines in the schematic, thus
reducing the area. Peddle grimly recalls, "Mathis
and I had to keep redoing the architecture to make
sure they stayed within that area."
To print the microchips, the engineers used a process
called Metal Oxide Semiconductor, or simply MOS.
This process used six layers of different materials,
printed one on top of the other, to build the tiny
components on the surface of a silicon wafer. This
meant the layout artists had to create six different
diagrams, one on top of the other. The process required
incredible precision because the layers had to line
up exactly. The surface of the chip was necessarily
dense in order to fit everything into a small area,
so the artists squeezed transistors and pathways
close to each other. If a single layer deviated
by more than a few microns, it could touch another
pathway and create a short circuit. After the layout
was completed, the engineers faced the soul-draining
task of rechecking their design. The most sophisticated
tool in this process was a small metal ruler, or
more accurately, a scale. Herd recalls, "They
would take their scales out of their pocket –
don't call them a ruler – and they would measure
for months! They would measure each transistor and
make sure it was two millimeters by point seven."
Mensch, Orgill and Bawcum sat bleary-eyed over their
drawings, sometimes for 12 hours a day, painstakingly
measuring every point on the layout. They measured
the size of components, the distance between components,
the distance between traces, and the distance between
traces and components. With a touch of sympathy
in his voice, Herd explains, "You could be
a really talented designer but if you couldn't check
your design with the mind-numbing repetitiveness,
your stuff didn't work and you would get a bad reputation."
Mensch and Orgill kept small cots in the room so
they could work for long uninterrupted periods followed
by a few hours rest. "With the semiconductor
guys, that tends to be something you do when you
are doing that at a certain level of design,"
recalls Peddle. "You tend to just keep going."
Even today, Peddle is still in awe of Mensch's ability
as a layout engineer. "Bill has this unique
ability to look at the requirements for a circuit,
and he can see how it is going to layout in his
head," he says. "He's just totally unique.
Nobody matches Mensch."
In June 1975, the chip design was ready. It was
up to the process engineers to imprint the design
onto tiny silicon wafers. Months earlier, Pavinen
promised Peddle he would have the N-channel process
ready. Pavinen was true to his word. "He gave
me everything I wanted," says Peddle. The procedure
to shrink a large, dense design onto something smaller
than a thumbtack is both mysterious and under-appreciated.
In many ways, it is also the most important step
and, if intelligently planned, it can reduce the
cost of a microchip dramatically. Engineers simply
call this step the process. When Pavinen and his
two partners founded MOS Technology, it was their
explicit goal to be the best process company in
the business. "MOS Technology's business premise
when they started was that they knew how to process
better than other people," says Peddle. Engineers
at the time documented very little of what they
did, and most process engineers stored the process
in their heads.
In order to print the transistors and other components
to a silicon chip, the engineers had to create a
mask. The mask blocks out everything except for
the parts of the chip they want, much like a stencil
blocks spray paint to produce letters. The mask
relied on the principles of photography and light.
To transform the circuit diagram into a mask, the
engineers used a material borrowed from the graphics
industry called Rubylith. Rubylith is a sheet of
acetate film with a red base covering the surface.
Since the semiconductor industry was in an early
stage of development, the tools to transfer the
diagram were outrageously primitive. According to
Bil Herd, "They were doing chips by cutting
Rubylith with razor blades. They would kick their
shoes off, push some tables together, and jump up
on them." It was up to engineers Mike James
and Harry Bawcum to perform the tedious task of
cutting out pieces from the Rubylith to form the
mask. According to Bob Yannes, who arrived at MOS
just after the Rubylith years, "I can't imagine
using that stuff. You're looking at this huge red
plastic thing in front of you and you're supposed
to peel off the parts that are supposed to stay
and leave the parts that are supposed to go away.
Unless you were very careful, you got the two confused
and you ended up peeling off the stuff that is supposed
to go away. Then you start taping it back down again."
With engineers crawling all over the huge sheets
of acetate film, it was vital sharp toenails were
not exposed; otherwise they would drag over the
surface and slice into the acetate. Engineers were
not known for they attention to their appearance
and it became vital to keep pairs of fresh socks
available. "Everyone would wear fresh socks
with no holes in the toes for getting on the table,"
explains Herd with some amusement. Orgill and Bawcum
created six Rubylith masks for the 6502 chip, one
for each layer. Once completed, the engineers photographically
reduced each of the large sheets of Rubylith to
create a smaller negative. Engineers chemically
etched a tiny metal mask using this negative. The
technicians would eventually use this mask, almost
like a rubber stamp, to create thousands of microprocessors.
Precise robotic machines used the tiny metal mask
to duplicate the pattern over the entire surface
of the silicon wafer. In the early seventies, the
metal mask made contact with the surface of the
silicon so the electrons could flow through the
mask, imprinting the design to the surface. "People
used to have what they call contact masks, which
were pretty destructive on the mask," recalls
Peddle. "They actually put the mask on the
chip and it got worn out very quickly." Every
time a mask wore out, the designers had to go through
the laborious process of making a new mask.
At MOS Technology, John Pavinen pioneered a new
way to fabricate microprocessors. "They were
one of the first companies to use non-contact mask
liners," says Peddle. "At that time everybody
was using contact masks." With non-contact
masks, the metal die did not touch the wafer. Once
the engineers worked out all the flaws in the mask,
it would last indefinitely. Pavinen and Holt handed
off the completed mask to the MOS technicians, who
began fabricating the first run of chips. Bil Herd
summarizes the situation. "No chip worked the
first time," he states emphatically. "No
chip. It took seven or nine revs [revisions], or
if someone was real good they would get it in five
or six." Normally, a large number of flaws
originate from the layout design. After all, there
are six layers (and six masks) that have to align
with each other perfectly. Imagine designing a town
with every conceivable layer of infrastructure placed
one on top of another. Plumbing is the lowest layer,
followed by the subway system, underground walkways,
buildings, overhead walkways, and finally telephone
wires. These different layers have to connect to
each other perfectly; otherwise, the town will not
function. The massive complexity of such a system
makes it likely that human errors will creep into
the design.
After fabricating a run of chips and probing them,
the layout engineers usually have to make changes
to their original design and the process repeats
from the Rubylith down. "Each run is a couple
of hundred thousand [dollars]," says Herd.
Implausibly, the engineers detected no errors in
Mensch's layout. "He built seven different
chips without ever having an error," says Peddle
with disbelief in his voice. "Almost all done
by hand. When I tell people that, they don't believe
me, but it's true. This guy is a unique person.
He is the best layout guy in world."
With the mask complete, mass fabrication of the
microchips could begin. Fabrication occurred in
an alien-like environment on the second floor of
the MOS Technology building called the clean rooms.
These hermetically sealed rooms produced a nearly
dust free environment. The precautions were extreme,
since a single grain of dust during the etching
process could cause a miniature short circuit. To
enter the clean rooms, lab technicians were required
to don hairnets, beard nets, moustache guards, gloves,
paper booties, and white jumpsuits. "It makes
you look like a bunny," says Peddle. "We
used a lot of them." As a final measure, the
technicians walked over a sticky-mat to remove the
last traces of dust before stepping into the airlock.
Within a crimson-tinted darkroom, technicians replicated
print after print of the 6502 circuit. They coated
the round silicon wafers with thin layers of metallic
substances. After each layer, technicians placed
the wafer into a special machine that copied the
circuit from the metal mask to the surface of the
silicon wafer. Electrons flowed through the mask,
causing a thin layer to harden in the shape of the
circuit. Each wafer had the chip pattern imprinted
approximately fifty times. In another room, bathed
in yellow light, technicians developed the microchips.
This process was almost exactly like developing
a photograph. A studious technician carefully washed
each wafer with chemical solutions that removed
all but the hardened circuitry. The industrial strength
solvents went by names like trichloroethene, trichloroethane,
dichloroethene, dichloroethane, and vinyl chloride.
The technicians repeated the process six times for
the six layers, each time using a different set
of chemicals and metallic substances. According
to Peddle, "You put this mask on the device
and do whatever step you are going to do, and then
you take it off, put another mask on, and do another
step."
The top layer was aluminum, which was the best conductor.
Beneath the aluminum were various semiconductors
such as Germanium. Each layer went by a different
name, such as diffusion layer, buried contact, depletion
layer, polysilicon, poly-metal contact, and metal.
With all six layers applied, the wafers entered
an oven to bond the circuitry. Technicians then
added a passivation layer (This final layer, called
the passivation layer, was difficult for Pavinen
to perfect. For mysterious reasons, small pinholes
appeared in the passivation layer. After a year
or so, the areas on the chip around these tiny holes
would begin to oxidize and the chip ceased functioning.)
to protect the fragile metallic circuitry from oxidation.
After applying the passivation layer, a machine
sliced the wafers into individual chips, each smaller
than a fingernail.
The chemical etching process used dangerous industrial
solvents. Inevitably, the solvents evaporated into
the air, which worried some of the staff. Robert
Russell, an early Commodore employee, chuckles about
the general indifference regarding this threat.
"MOS had a little cafeteria at the back alongside
the production line," he explains. "They
had a chemical release in the production line that
turned all your blueprints that were hanging on
the walls different colors. You would come in and
they would all be yellow or green. You kind of hoped
that wasn't happening when you were breathing it."
"The production of semiconductors produces
all kinds of nasty byproducts," says engineer
Bob Yannes. Inevitably, accidents occurred. "I
remember things happening like occasionally we'd
have a gas leak in the front end and you'd have
people walking through the building saying, 'Hurry!
Get out of the building!'" Most people were
ignorant of the dangers posed by the semiconductor
industry. "This is a time in history when everybody
looked at the clean rooms and the guys all wearing
their bunny suits, and how sterile it was, and everybody
wanted a semiconductor company in their hometown,"
says Peddle. "It was high tech, big money,
and clean as opposed to a foundry or something like
that. What they didn't realize was these guys were
dealing with the most poisonous, noxious shit in
the world, and they had to put it somewhere."
The semiconductor industry was still new in 1970
when John Pavinen and his partners created MOS Technology.
"Nobody in the semiconductor industry had a
clue about how to deal with the stuff they were
making for years," says Peddle. "John
did the best he could and he actually did pretty
well."
The industrial solvents drained from the chip fabrication
line into a 250-gallon concrete holding tank. "They
built these double tanks and they stored it underground.
But you know, we just didn't have the technology,"
says Peddle. "Let me just make a point; John
Pavinen was a very meticulous guy, and he absolutely
designed his tanks the best he could given the environment
at the time." In early 1974, a serious disaster
occurred. Technicians monitoring the tank realized
the tank was emptier than it should have been. During
the cold Pennsylvania winters, the concrete tank
developed a small crack. "Some of their storage
tanks leaked and it leached into the ground,"
recalls Yannes. Pavinen kept the spill quiet, even
from Peddle. "We didn't join him until the
summer of 1974, and they wouldn't have told us about
it anyhow," says Peddle. "With all due
respect, they keep that stuff a lot quieter in Silicon
Valley. There's been a whole bunch of stories about
breast cancer being much higher in Silicon Valley,
and there's a bunch of other anomalies."
As the Environmental Protection Agency later determined,
the leak was the source of groundwater contamination
in the area. (According to EPA reports, in December
1986, the EPA performed a site inspection in which
they collected soil samples, surface water, and
water from nearby residential wells. Tests revealed
low levels of trichloroethene and other volatile
organic compounds in the soil and shallow bedrock
underneath 950 Rittenhouse. Furthermore, the EPA
found traces of volatile organic compounds in the
well water supply, but they did not approach dangerous
levels. MOS Technology began a soil-cleaning program
to extract the dangerous solvents, and in 1996,
the residents received public water lines from an
outside water source.) The Valley Forge Corporate
Center bordered a residential development that relied
on well water, so there was cause for concern. Fortunately,
water tests at the time indicated the solvent had
not yet entered the water table. Pavinen replaced
the faulty tank with an unlined steel tank.
After the chemical solvents etched the chips, the
technicians inserted the flecks of silicon and metal
into an easy to handle package. Today, semiconductor
companies typically place their chips in black plastic
shells with silver pins. Back in 1975, MOS Technology
placed their microprocessors in distinctive white
ceramic shells with forty gold plated pins.
As if a price drop from $300 to $25 was not radical
enough, Peddle and his team planned to release an
ultra-low cost microprocessor called the 6507. "Our
goal was to do a $5 processor," Peddle states
flatly. "The 6507, which was a subset of [the
6502], could be made at a cheaper price. It was
designed to be a really small package." The
packaging determined how cheaply Peddle could sell
his chips. "Packaging costs money and pin outs
cost money," explains Peddle. "Back in
those days, those big 40-pin packages were very
expensive." The 6507 contained only 28 pins.
In a perfect world, every single chip would work.
If they fabricated 10,000 chips, they would ideally
have 10,000 working chips. However, imperfections
snuck in from every imaginable source. Inconsistencies
in the etching process caused flaws. Small particles
of dust getting in the way of the mask caused flaws.
Even impurities in the silicon wafer produced flaws.
The number of flaws the engineers could defeat determined
the chip yield. Technicians methodically tested
every single chip to determine if it worked. In
1975, most chipmakers considered a 30% yield to
be quite successful. The industry simply discarded
the remaining 70%. The process was inherently inefficient
and resulted in monumental chip prices. If Pavinen
wanted to achieve low cost microprocessors, he would
have to use every trick available to raise the yield.
In the seventies, most semiconductor houses tested
their chips with a Fairchild Century system. The
huge machine occupied almost an entire room and
cost almost a million dollars. As Bill Mensch explains,
"We couldn't afford them at MOS Technology."
Instead, Mensch constructed a small handheld chip
tester that resembled a computer motherboard covered
in IC chips. Every single chip from MOS Technology
was hand tested by the homebrew device for the first
year and a half of 6502 production.
Through careful planning and innovation, MOS Technology
achieved a chip yield of 70% or better. Peddle attributes
this success to Pavinen and his non-contact mask
process. "Because they could afford to spend
a lot more money making a perfect mask, they got
much better yields," he says. The low production
costs meant Peddle's vision would come true.
Selling the Revolution
The team now had hundreds of working microprocessor
chips, but their battle was just beginning. "We
brought it out on schedule, on cost, and on target,"
says Peddle. With almost no budget for advertising,
it would be up to Peddle and his team to create
as much fanfare as possible. "We wanted to
launch the product in a spectacular way because
we were a crummy ass little company in Pennsylvania,"
explains Peddle. At first, he attempted to garner
free publicity from newspapers. "Some people
liked the story and put us on the cover of their
newspaper, which hyped us up," he recalls.
Prior to launching the 6502, MOS Technology hired
Petr Sehnal, a friend of Chuck's from his days at
GE. "Petr was a Czechoslovakian intellectual
who came over to this country," recalls Peddle.
"He was kind of acting as a program manager
and getting everything ready for the show, and he
was the West Coast sales manager." To reach
their target audience, Sehnal wanted to take the
6502 to the masses. The annual Western Electronic
Show and Convention (Wescon) was showing in San
Francisco in September. Sehnal knew the show would
be the best place to launch Peddle's revolutionary
new product.
The microprocessor would be useless to engineers
without documentation. Peddle recalls, "We
were coming down to launching, and my buddy [Petr
Sehnal] kept telling me, 'Chuck, you've got to go
write these manuals.' I kept saying, 'Yeah, I'll
get around to it.'" Peddle did not get around
to it. With Wescon rapidly approaching, and no manual
in sight, Sehnal approached John Pavinen and told
him, "He's not doing it." "John Pavinen
walked into my office with a security guard, and
he walked me out of the building," recalls
Peddle. According to Peddle, Pavinen gave him explicit
instructions. "The only person you're allowed
to talk to in our company is your secretary, who
you can dictate stuff to," Pavinen told him.
"You can't come back to work until you finish
the two manuals." Peddle accepted the situation
with humility. "I wrote them under duress,"
he says. Weeks later, Peddle emerged from his exile
with his task completed. The 6502 would have manuals
for Wescon.
The team planned to sell samples of the 6501 and
6502 microprocessors at Wescon, along with the supporting
chipset. "We then took out a full-page ad that
said, 'Come by our booth at Wescon and we'll sell
you a microprocessor for twenty-five dollars.' We
ran that ad in a bunch of places," recalls
Peddle. The most prominent advertisement appeared
in the September 8, 1975 issue of Electronic Engineering
Times. Things were going well until his team arrived
for the show. Peddle recalls, "We went to the
show and they told us, 'No fucking way you're going
to sell anything on the floor. It's not part of
our program. If we had seen these ads we would have
killed you.'" Having come so far and worked
so hard, Peddle and his team were not ready to give
up. "They told us this just enough in advance
that we took a big suite, the McArthur Suite, at
the St. Francis Hotel," says Peddle. MOS Technology
would sell their contraband microchips from booth
1010 by redirecting buyers to a pickup location,
much like drug dealers. "People would come
by the booth and we'd say, 'No you can't do it here.
Go to the McArthur Suite and we can sell you the
processors," recalls Peddle. "We became
so popular people would get on the bus at the convention
center and ask, 'Is this the bus to the McArthur
suite?'" The promise of low-cost microprocessors
caused a sensation. Many people thought the $25
chip was a fraud or assumed it performed poorly.
Peddle was confident these questions would resolve
themselves once people started using his chips.
Eager hobbyists and engineers lined up in the hall
outside the McArthur Suite. Chuck's wife Shirley
greeted the engineers, collected their money, and
handed out chips. "My very pretty wife was
sitting there, and we had this big jar full of microprocessors,"
recalls Peddle. "You walked up, we would take
your microprocessor off the top, and she would put
it in a little box for you." The large jars
full of microchips seemed to indicate MOS Technology
was capable of fabricating large volumes of the
6502 chip. This was subterfuge. "Only half
of the jar worked," reveals Peddle. "The
chips at the top of the jar were tested and we knew
the ones on the bottom didn't work, but that didn't
matter. We had to help make the jar look full."
Shirley Peddle also sold manuals and support chips.
Peddle explains, "You could buy this little
RAM/ROM I/O device for another $30 and we would
sell you the two books we wrote, which turned out
to be very popular." The manuals gently introduced
readers to the concepts of microprocessor systems,
explaining how to design a microprocessor system
using the 6500 family of chips. It was a bible for
microcomputer design. "Everyone told us how
good they were to use," he recalls. "We
were very proud of that."
After completing their purchases, customers entered
the suite. Here, Peddle demonstrated the 6501 and
6502 chips, along with tiny development systems
such as the TIM and KIM-1 microcomputers. "They
would go around the suite and they would see the
development systems, and they would find out how
to log onto the timesharing systems so they could
develop code," he says. "Then they would
wander away."
The purpose of selling the chips at Wescon was not
to raise money. It was to cultivate developer interest
in the chip. If all went well, the engineers and
hobbyists would go out into the world and design
products with the 6502. Waiting in line outside
Chuck's hotel room was Steve Wozniak, who thought
he might be able to use the chip for a homebrew
computer project. Peddle's documentation undoubtedly
influenced Wozniak.
In the months that followed, engineers and hobbyists
began reporting success with the MOS microprocessors.
Thanks to a review in the November issue of Byte
magazine, the chips soon gained a larger following.
Dan Fylstra, founder of the company that would someday
sell the legendary VisiCalc spreadsheet, wrote an
article titled, 'Son of Motorola'. People soon became
convinced that the 6502 chip was a legitimate microprocessor.
The 6502 did not immediately improve MOS Technology's
finances, but it had a major impact on the computer
industry. "It spawned a whole class of users,
called hackers back then," says Charpentier.
"It changed the world," says Peddle. In
September 1995, as part of their 20th anniversary
edition, Byte magazine named the 6502 (Even pop-culture
recognizes the 6502 chip. The animated television
show Futurama revealed that one of its characters,
a robot named Bender, has a 6502 microprocessor
for a brain. Futurama, "Fly & the Slurm
Factory". (Season 2, Episode 4)) one of the
top twenty most important computer chips ever, just
behind the Intel 4004 and 8080. |
| »
Chapter 12: The Commodore 64, 1981-1982 |

With less than two months to build a complete computer
system, the engineers rarely left the MOS Technology
building. "In the middle of the building lab,
we took over one corner of the room and worked 20
hours a day, 7 days a week to get the prototypes
running," says Russell. As managers, Charles
Winterble and Al Charpentier did not perform hands-on
work on the VIC-40. "It was Bob Yannes, me,
and Dave Ziembicki the technician who really went
off and did the Commodore 64," says Russell.
"Luckily we had a guy like Charlie Winterble
who let us go off and do that when we were supposed
to be making the P and B stuff work."
Designing a full computer system was a new challenge
for Bob Yannes. "I was still in the chip
group so I wasn't really supposed to be working
on systems," says Yannes. "The only
reason I ended up doing the C64 was because I
was the only one who knew enough about the chips
and how to put them together in a timely fashion."
With such a tight schedule, Yannes and Russell
began laying out the architecture of the computer.
"Bob [Yannes] and I sat down and came up
with the hardware architecture," recalls
Russell. Yannes was an assiduous engineer by nature.
For two short days, Yannes worked in his office
and the drafting area to design the architecture
for the VIC-40. "It was a pretty easy architecture,"
says Yannes. "I just designed the most minimal
system I could with the fewest number of components.
There's not a whole lot of stuff in there. There's
the VIC chip, the SID chip, and there's 64K of
DRAM."
Almost none of the design came from the VIC-20.
"There were very few chips that were used
in the C64 that had ever been used before,"
says Yannes. Only the serial port, cassette port,
and user port remained the same. It also used
the same joystick connecter, except there were
two. Rather than use the same bulky cartridge
system of the VIC-20, Yannes decided to borrow
technology from the Max Machine. "Since the
Max Machine was already in progress, I decided
to make one of the C64 memory configurations match
the Max so that it would be able to use Max game
cartridges," explains Yannes. "When
you plug the game cartridge | | | | |