By
David Ottalini (dave.ottalini@wap.org)
Apple
/// SIG Chairman
Washington
Apple Pi Users Group
Produced
with special thanks to David Craig (shirlgato@cybermesa.com).
Mitchell
Spector (mspect@vega.concordia.ca)
and Jeff Marraccini of Altair Systems (jeff@altair.com)
also provided invaluable help.
Additions/Corrections
welcome to the above e-mail address.
Version:
5.1
August
2005
1)
What is the Apple ///?
2)
What are the ///'s Capabilities?
3)
What About Its Built-In Features?
4)
What About SOS - The ///'s Operating System?
5)
Is My Apple /// Still Useful Today?
6)
What Other Hardware/Software do I need?
7)
What's This about SOS?
8)
What is BOS3?
9)
Tell Me About Emulation Mode.
10)
Where do I find Information about the ///?
-more-
11)
Where Can I Find Public Domain Software?
12)
Are There Still Sources for Hardware and Commercial Software?
13)
Where Can I Get my Apple /// Repaired?
14)
What about an outboard Power Supply for the ///?
15)
Where Can I Find the Pinouts for an RGB Monitor?
16)
Are There Any Apple /// Newsletters or Magazines?
17)
Were There Any Apple /// Books?
18)
What about Technical Materials?
19)
Where can I learn more about 6502 machine language?
20)
What Kind of Communications Software is Available?
21)
What about Modems?
22)
Can the /// Access the Internet?
23)
What Does it Take to Surf the Internet with the ///?
24)
What was the Apple /// Software Development Fund?
25)
Are There Any Specific Apple /// Web Sites?[
26)
Was The Apple /// Ever Used As A Prop in the Movies?
27)
What About A Poem?
28)
ItÕs the 21st Century! WhatÕs New with the ///?
29)
I Want More Information About the /// - Where Can I Find It?
30)
OK - I'm Stumped - What is a SARAsaur?
31)
What Did Apple /// Users Call Their Machine?
1)
WHAT IS THE APPLE ///?
A)
Historical Background
The Apple /// (code name: SARA- after the
daughter of developer Wendell Sander) was the first computer designed from the
ground-up by Apple Computer as a company. It was a business machine designed to
include many of the "extras" Apple II owners had to buy: an 80-column
card, a serial card, larger memory, keyboard with keypad, etc. It was supposed
to be, as Andy Hertzfeld describes it, the Òbig brotherÓ of the Apple II. It
was one of the most powerful 8 bit computer systems ever built.
-more-
The Apple BuyerÕs Guide described the /// this
way:
ÒA more powerful version of the Apple // series,
the Apple /// is designed principally for business applications. Ideally suited
for sophisticated small business and professional applications, it deftly
handles accounting, financial modeling, data-base management, word processing,
graphics, communications Ð all your business needs.Ó
Later comments added:
ÒWith more than 400 business programs available
for the Apple ///, thereÕs a good chance that the program you need is on the
shelf at your local authorized Apple dealer. In addition, the Apple Softcard
/// System opens up more than 3000 CP/M programs to the Apple ///. And thousand
of Apple II Plus programs run on the Apple /// in emulation mode.Ó
The heart of the /// was its operating system
known as SOS for ÒSophisticated Operating System.Ó It was considered to have
been one of the best operating systems for small computers of its day: It was
so good, in fact, that Apple later based its ProDos Operating System for the
Apple //e, //c and GS on SOS.
Apple said of SOS in the BuyerÕs Guide:
ÒOne of the Apple ///s strongest features Ð and
one of its least visible Ð is its Sophisticated Operating System (SOS). More
than 400 application programs written for the Apple /// are based on SOS, the
first operating system to bring a truly flexible range of services to the
personal computer.
What SOS means for you is this: it simplifies
using your Apple ///. ItÕs not necessary, for example, to know which disk drive
contains the information (or file) you need, which slot the interface card for
an accessory occupies, or which bank of memory is in use. SOS handles these and
other operations automatically.Ó
-more-
Andy Hertzfeld was a software and hardware
engineer at Apple, who worked on the original ///, the IIe and later the
Macintosh. Although the Mac OS was radically different from SOS, Hertzfeld says
the Apple /// OS did have an impact as he worked on the MacintoshÕs HFS
(Hierarchical Filing System). In a 1987 interview with Dave Ottalini, Hertzfeld
said:
ÒI did the Macintosh Operating System and I was
very familiar with the Apple /// and especially in the I/O system of the
Macintosh, I was influenced by the Apple /// operating system.Ó
Dr. Wendell Sander, the father of the Apple ///,
told Ottalini it was nothing less than "one of the most professional and
best done" operating systems:
"The /// software was exceptional. It
really set the standard. Even to some extent the MS-DOS was, if you look
closely at it, many of the concepts that were developed in SOS were carried
through in MS-DOS. So it really has to be rated as a very important event in
software for micros because it was the first really solid operating system. I
still think it is probably one of the most professional and best done. That is
in the sense of being able to get modules in and out of it and adapt to it and
add to it and expand on it, SOS is still probably better than any of the
popular operating systems on micros. So, that's certainly true that it set a
standard."
Steve Wozniak, one of Apple's three founders, also had high praise for SOS. He told BYTE Magazine in December 1984: "I think [SOS] is the finest operating system on any microcomputer ever."
B)
Development
AppleÕs great success
with the Apple II was fraught with a lack of confidence. There were fears the
public would grow tired of the II and that competitors would bring out more powerful
machines that were considered more suitable for a business environment. Thus
the idea for a successor to the II took hold and Dr. Sander, who had been
working on Apple II projects, was tapped to design the ///. His design team included Walt Broedner,
John MacDougall and Dan Kottke (who did the prototypes).
-more-
Software design was
handled by a number of people, including:
Bruce
Daniels, initial software system
J
R "Dick" Huston, SOS file system designer,
Tom
Root, console device driver
Rick
Auricchio, SOS, device drivers,
Stephen
Smith, mouse device driver
Bob
Etheredge, SOS
Bob
Martin, SOS
Donn
Denman, Apple /// Business BASIC
Al
Hoffman, Apple /// Pascal
Work began in late 1978,
but Sander soon ran into trouble thanks to hardware and software concerns, as
well as AppleÕs inability to really decide what it wanted the /// to be. As West
of EdenÕs
author, Tom Rose writes, ÒEveryone had a wish list.Ó
The /// was to Òrepresent an attempt to correct or add
most of the capabilities missing from the Apple IIÓ (AppleÕs Bruce Daniels memo
of June 14, 1979). It had to access more memory, provide better graphics, offer
a real keyboard capable of upper and lower case, and a new OS. It also had to
be backwards compatible with the II. That forced Sander and his team to design
the /// using the Apple II CPU and make many other compatibility concessions
that would not have been necessary otherwise.
Also on the hardware side, Sander had to contend
with Steve JobsÕ demand that there be no fan and an upcoming FCC edict that
computers must be shielded to prevent radio interference. The final solution
was an all-in one case that basically was a giant heat sink and RF shield. An
automotive engine foundry got the contract to manufacture the ///Õs heavy aluminum
case.
This
led to major problems. Since the case had no flexibility, the motherboard could
only be a certain size with little room for growth. The memory card had to be
piggybacked on top of the motherboard since there was no room anywhere else.
(For
more on the ///Õs design challenges see: www.landsnail.com/apple/local/design/apple3.html)
-more-
WeÕve
talked about the emulation issues. In that June 1979 memo, Daniels wrote about
software development for the ///. He said that it would include an ÒApple II
emulation mode (that) provides an architecture that is as close to the current
Apple II as feasible so that its software will run with Òlittle or noÓ
modification. Unfortunately, it may not have been clear at that point that the
hardware design forced on Sander and his team would not only doom emulation
mode to a shadow of what Daniels said was needed (or thought would be part of
the design), but would also guarantee it would be difficult for the /// to
survive in the marketplace.
As it turned out, not only would full emulation
have been very expensive to provide on the software side, but it would also
have required a number of additional chips on the motherboard that did not have
the space for them (Titan later was able to fully emulate the Iie with two plug-in cards!). As a
result, Sara was stuck running 48k Apple II+ programs, it was not 100%
compatible and emulation mode was not easy to use. An internal memo by Apple
Engineer Bob Etheredge in 1981 admitted that Òemulation mode has cost the
company several man years in development, testing and support, and has severely
handicapped the Apple ///Õs hardware design, e.g. choice of processor, i/o
mapping, video capability, etc.Ó
C)
Introduction Problems
Few developers came on board at the beginning -
they were too busy working on Apple II products, SOS 1.0 was developer
unfriendly and Apple did little to ensure there would be new software packages
to start despite that 1979 memo which specifically said Òthe software for this
system will be critical to impact and success of this product.Ó
Another major problem was that Dr. Sander and
his team were under orders to get the /// out the door quickly thanks to
continued concerns about the Apple IIÕs sustainability. Dr. Sander told
Washington Apple Pi's Dave Ottalini in a 1986 interview that that was a big
mistake:
"It was probably introduced into the
marketplace six to nine months too early largely because there was a great
worry within Apple for a long time that the Apple IIÕs demise was just around
the corner. I think maybe they've learned the Apple IIÕs demise is not just
around the corner! There was this concern that "Wow, if we don't get this
thing out next month, Apple II sales are liable to go down and we're really
dead, we're in big trouble. So there was probably too much push to get it out.Ó
-more-
The Apple /// was officially introduced at the
National Computer Conference in May 1980. Because the machine was never
properly tested, there were immediate problems when shipments of SARA started
in the fall. The ///s would work for a short time Ð and fail.
The ///Õs prototype developer Ð Dan Kottke - told
David Craig in December 2002 about one of the serious problems Apple had not
anticipated. CraigÕs notes indicate:
(There was) only one serious problem, (a) mechanical
connection with the III memory board that became faulty after a short period of
use. Memory was implemented as a daughter board, which attached to the motherboard
via two connectors (many pins each, single sided). Connectors were not gold, so
when heated within a closed case they became corroded and did not transmit
signals correctly. Memory signals governed the whole system timing. The fix was
to use double sided gold connectors that mechanically fit better and did not
corrode. The problem not noticed in the III development laboratory since
systems did not have cases and there was minimal heat build-up generated.
Systems run continuously the whole day.
Heat was not just a problem affecting the memory card. It turned out the chips on the motherboard would pop out during shipping or pop out of their sockets after only a few hours of on and off use (heating and cooling caused the chips to literally wiggle out of their sockets). This led to the famous "two-inch drop" where owners would pick their machine up and drop it two inches to reseat the chips.
And there were other problems - a promised
built-in clock/calendar chip did not work and there was very little software
(people complained "I spent $4000+ and got Visicalc and a
paperweight!"). Finally, AppleWriter developer Paul Lutus wrote (October
1980) indicating a serious problem with the keyboard reset function that could
cause the /// to hang.
This was a disaster in the making, since the ///
was the Ònext generationÓ replacement for the II that was supposed to be a
machine businesses could reliably use. Apple had to do something quickly. So every
problem motherboard was replaced through June 1981, no questions asked. A
number of changes were made to the motherboard and testing procedures were more
demanding to decrease failure rate (June, 1981 memo from Bill Deitsch and Bob
Edgington). Apple started a new publicity campaign in December to ÒreintroduceÓ
the ///. The good news was that the revamped machine worked. Most of the
problems were gone. But the long-term damage had been done.
In August 1981, IBM introduced its ÒPersonal ComputerÓ that ran an OS from a small company called MicroSoft. The PC did not meet immediate acceptance but it was helped along by the ///Õs problems and IBMÕs name in the business world.
-more-
A3 FAQ Ð Page 8
As 1983 began, Apple was starting to concentrate
on its new Lisa computer and the Macintosh was in development Ð pulling away
development funds. Something had to be done with the ///. Dave Fradin, the last
Apple /// product manager told David Craig in May 2003 what happened:
ÒIn early 1983 Del Yocum, who was head of
manufacturing, was bothered by making only a few thousand ///s compared to
making xx,xxx IIs per month. He ignored that the /// was 6x more profitable
than a II. So off to Pajaro Dunes near Monterey, California and the executive
committee killed the product line without consulting with the new (two weeks) ///
product manager (me) or division manager.
A couple of weeks later Sculley called me into
his office along with Ida Cole, Joe Graziano and Yocum and said they had $20
million in /// parts spread around the world and wanted to know what ÒweÓ
should do about it. I said, ÒWhat
do you mean ÔweÕ paleface?Ó recalling the old Tonto and Lone Ranger story.
I told him I couldnÕt sell ///s because I had no
authority to move the product. He asked what we should do and I recommended a
separate profit and loss center with the authority to get things done. He said
make a proposal and 15 of us went off and wrote an 80-page business plan, which
was presented to the Executive Committee on July 15, 1983.
Later that month Ken Zerbe asked me to head up a
separate division. We sold an additional $60 million in product, transitioned
the 500 developers to Mac and I think preserved the value of the buyerÕs
investment.Ó
The
///Õs official end came on April 24, 1984 Ð when Fradin wrote a memo to his
staff saying:
"While
the Apple /// is an excellent business computer, it is a generally accepted
view by Apple's product managers that Apple can best serve the future needs of
our business customers by expanding the Apple II and Apple 32 [Lisa and
Macintosh] product families, and by concentrating future development, marketing
and sales efforts on these products. Therefore, we have decided that no future
product development efforts shall be initiated and undertaken for the Apple ///
product line, effective immediately."
-more-
A3 FAQ Ð Page 9
Apple
removed the Apple /// line from its product list in September 1985.
Fradin says a total of 75,000 ///s were sold all
together (other sources say 85,000). He told David Craig some of the other
reasons that helped doom the computer:
ÒPart
of the problem was that the /// was Steve JobÕs bastard child. He was the VP of
product development in 1980 when it was introduced with chips that slipped out
in shipping and without an operating system. SOS was not really usable for
programming until early Ô83.
Second, as forward looking as JobsÕ is, he did
not want any competition in the market place for his beloved Mac. He thought
the Mac was a business machine even though when it was introduced it did not
have a second floppy drive, a hard disk, a letter quality printer, no
accounting (package) and the largest program one could run was 10KB.
When
confronted with the plans to market the Mac as a business computer and lacking
the key elements, SculleyÕs response to the Personal Computer Systems division
wide meeting was Òwe will market with mirrors.Ó Mirror-based marketing worked
so well that in January 1985 Mac sales dropped to 4 units, 1500 Apple employees
lost their jobs and Jobs was gone a few months later.Ó
Apple co-founder Steve
Wozniak had his own take on why the /// was essentially doomed from the start. In an on-line conference
dated 16 October 1983 for the CompuServe MAUG discussion group, Wozniak wrote:
-more-
A3 FAQ Ð Page 10
In that December, 1984 Byte
article he added (somewhat bitterly):
ÒWhen we came out with the Apple III, the
engineering staff canceled every Apple II engineering program that was ongoing,
in expectation of the Apple IlI's success. Every single one was canceled. We
really perceived that the Apple II would not last six months. So the company
was almost all Apple III people, and we worked for years after that to try and
tell the world how good the Apple III was, because we knew. There is a lot to
somebody's perception or image of a machine and how good it is. How many of my
friends have them? How many people in the world have them? The Apple III was a
failure the first year as a product - it had a bad image. When you give a bad
first impression, you can go for five years trying to overcome it.
It was unfortunate the way things worked out,
because we probably put $100 million in advertising, promotion, and research
and development into a product that was 3 percent of our revenues. In that same
time frame, think what we could have done to improve the Apple II, or how much
could have been done by Apple to give us products in IBM's market.Ó
With
the /// gone, it was left up to individuals, user groups like WAP, ATUNC, TAU,
AUGI and others, online BBSes including ThreeÕs Company and MAUG (Micronetworked
Apple Users Group) on CompuServe, as well as a small number of vendors (On
Three, Pair, D.A. Datasystems and others) to keep the flame going and they did
for many, many years. Development on many excellent programs Ð commercial,
shareware and public domain continued, as did some hardware development. They
included a 512K memory card, a replacement power supply, a new version of the
OS, BOS3, new drivers, (and most recently) a new card to use CF and IDE drives.
Combined
with an enduring love for this computer by a group of loyal users and hobbyists,
the ///Õs life was extended to the point where those who purchased the machines
got their value out many times over.
-more-
A3 FAQ Ð
Page 11
Here's
a visual timeline graph covering the Apple ///Õs lifespan. Each notch represents two months.
1980
|-
|-
|- <--------------- Apple
/// Introduced
|-
|-
|-
1981
|-
|-
|-
|-
|- <--------------- IBM PC Introduced
|-1982
|- < --------------- Apple III (fixed version)
|-
|-
|-
|-
|-
1983
|- <--------------- Lisa, Apple IIe
|-
|-
|-
|-
|-
1984
|- <--------------- Apple III+;
Macintosh Introduced
|- <--------------- Apple III discontinued Ð April 24
-more-
A3 FAQ Ð Page 12
2)
WHAT ARE THE ///'s CAPABILITIES?
Keyboard
Friendliness
1)
Arranged in a strictly traditional typewriter layout.
2)
Sculptured, stepped and angled keys.
3)
Numeric keypad. Recognized differently from main keyboard.
4) Software
definable character set. Can be
used for graphics.
5)
All characters used by programming languages.
6)
Dedicated cursor or arrow keys.
7)
Two-key method to boot a disk without powering on and off.
8)
Alpha lock key. Shift locks alphabetical keys only.
9)
The entire ASCII code.
10)
Automatic repeat for all keys and the speed can be tripled.
11)
Can print 224 distinct characters.
12)
Little bumps on D, K and 5 keys for finger positioning.
13)
Numeric keypad can be redefined into 12 special function keys.
14)
Dvorak American simplified Keyboard available on file.
15)
128 byte type ahead buffer.
16)
Many different fonts available on file.
17)
Character set can be changed under program control at any time.
18)
Up to 13 control keys.
19)
Computer "ON" light.
20)
Two system keys, Closed and Open Apple keys redefine others.
21)
73 total keys.
-more-
3)
WHAT ABOUT ITS BUILT-IN FEATURES?
1)
80 Column display.
2)
143K internal Disk drive.
3)
Interface for up to 4 disk drives.
4)
RS232-C. Can be made to serve six devices with a T-switch.
5)
Color: All 16 colors with 192 lines of 280 dots per line.
6)
Graphics: 16 shades of green with 192 lines of 560 dots per line.
7)
Sound: 64 volume settings and over seven octaves.
8)
Speaker: Capable of speech producing quality.
9)
Monitor ports: RGB or any video device;
NTSC 80 column monocrome.
10)
Real time clock (location 3-B on motherboard).
11)
Two Joystick ports, A&B. Silentype printer can share port A.
12)
Diagnostics in ROM.
13)
Audio output: SOS Audio Driver can be rewritten to your needs.
14)
Built-in security mount to prevent theft.
15)
256k RAM ability, 512k potential without strain.
16)
Four expansion ports.
-more-
4)
WHAT ABOUT SOS - THE ///'S OPERATING SYSTEM?
1) First ever written to be user friendly.
2) Data base capabilities. Hierarchical
file-structure.
3) Manages ALL memory locations and I/O.
4) One disk format for ALL allows file
sharing and communication.
5)
Able to share files with Apple //e; IIc and IIGS ProDos systems.
6) Easily updated without hurting existing
compatibilities.
7) Ability to rewrite software drivers
instead of changing hardware.
8) Will locate which drive a file is in
for you.
9) Error proof menu system.
10)
Automatic date/time stamping of every file.
11)
Any destruction of data requires confirmation.
12)
Interrupt driven.
13)
Device-independent I/O.
14)
Stores information using all empty space.
15)
Programs that request printing could continue during printing.
16)
Powerful drivers for graphics, console, audio, printer and RS232.
17)
Programs can run 20% faster by pressing Control-5 on keypad (no video).
18)
Uses all available memory.
David
Craig Comments:
The
Apple ///'s memory addressing was implemented in a very unique way. The ///'s
brain was the 6502 microprocessor chip which could only address 64 KB of
memory. But Apple added special circuitry to the /// so that this
microprocessor could access up to 512 KB of memory. This was based on what is
called "bank switching" which in effect fools the microprocessor into
accessing different chunks of memory even when that memory is way beyond the
normal 64 KB upper limit. The ///'s 64 KB memory was arranged into two sections
with a middle section occupying 32 KB and the remainder (which itself was
split) into the other 32 KB. The middle section could be replaced by up to 15
different sections or banks. This combination of 15 32 KB switched sections and
one fixed section allowed the /// to have access to a maximum of 512 KB of
memory (i.e. 512=32x(1+15)). (On
Three did produce a card that provided that amount.)
-more-
Apple
/// applications could instruct the ///'s hardware to use a specific section or
bank in the variable memory area. Or, the application could use a special form
of memory addressing called "extended addressing" which allowed the
program to read or write a byte from any section or bank regardless of whether
that section or bank was active. For example, a program could be running in
bank 4 of memory and it could read byte number 1000 from bank 7 without doing
any special "bank switching" operations. This "extended
addressing" made the /// a very unique machine for its time.
As
for the ///'s microprocessor clock speed, applications could control this. The
speed could be set to either 1 MHz or 2 MHz. Normal /// operations were done
with the clock running at 2 MHz so these operations would run as fast as
possible. But when peripheral devices needed to be accessed, the application
had to set the clock speed to 1 MHz. This was necessary since the ///'s
peripheral input/output system was based on the Apple II computer's
input/output system which ran at 1 MHz.
5)
IS MY APPLE /// STILL USEFUL TODAY?
The Apple /// is now a collectors item. For its
time, it was an excellent text-based computer with software that allowed it to
do many basic (and some amazing) computing chores. It still has one of the best
keyboards ever made for a computer. It can do basic word processing, spread
sheet work, some graphics and even email on the Internet. For collectors, it is
still a fun machine to have in a collection. Some still use them and WAP, for
instance, continues to use a /// to support its PD library. In fact, users all
over the world continue to buy disks, so someone is still turning our SARA on
occasionally. Look to eBay or other auction site for sellers. They are out there.
In fact, you can still find new software in shrinkwrap if you look! Amazingly,
there are folks still writing drivers for such things as the Apple II CFIDE
card (see below) and even Profile emulators.
6)
WHAT OTHER HARDWARE/SOFTWARE DO I NEED TO MAKE MY /// A
COMPLETE
SYSTEM?
a)
A
second 5.25 inch disk drive.
It speeds up your work considerably, makes it easier to load and save
data, etc. The /// can also use the: 1.4 MB Apple II Superdrive and 800k
Unidisk (using Apple // interface cards and On Three drivers) and many hard
disks (Profiles and SCSI). On Three sold a Universal SCSI driver from On Three
in 1996 that, with the proper interface card, gave /// users access to the
Syquest EZ Drive and just about all SCSI-based hard drives (one notable exception
is the Iomega ZIP Drive). Pascal programmers should use a Profile or 4 disk
drives.
-more-
b)
System
Utilities disk. This program lets
you copy files, format disks and configure your SOS.Driver file (WAP PD disk
3UTL-02).
c)
///
EZ Pieces. This is an excellent integrated software program that is easy to
learn and use. Its files are also
compatible with the Apple // version called AppleWorks. (3APL-07)
d)
Printer. The kind is up to you within certain
limits. You can run a printer off
of the RS232 port in the back of the /// or by using a Serial or Parallel card
you plug into one of the four slots internally. To connect your serial printer to the /// you will need what
is called a Null-Modem cable.
Local computer dealers and national chains like Radio Shack used to sell
them. These days youÕll need to check with your local user group or a company
like Sun Remarketing that still sells Apple II parts. Ebay or other online
reseller is also a viable source of older serial or parallel printers.
You will also need specific device drivers you
have to install in your SOS.DRIVER file using System Utilities. WAP has a disk
full of /// drivers (3SYS-07). The /// can print to laserprinters (with serial
ports) as well as dot matrix printers, but does not have access to inkjet
printers (no drivers!).
e)
A
surge protector to prevent electrical surges from destroying your machine.
f)
Dust
cover to help keep things clean.
7)
WHAT'S THIS ABOUT "SOS"?
As mentioned earlier, the Apple /// uses an
operating system called SOS, or Sophisticated Operating System. It is entirely ram-based. That means every time you load an
application, it loads the operating system as well. You will find three files on all program disks: SOS.Kernel;
SOS.Interp and SOS.Driver. The KERNEL is the operating system itself. You want to make sure you have the
latest version: 1.3. You can tell what version you have when you boot up. You
will see a message that tells you the version along with the Apple copyright.
You can get an auto-upgrade disk from WAP Ð ask for disk 3SYS-01. Check AppleÕs
SOS data sheet from March 1982 for a good overview of the OS Ð titled Apple
/// Sophisticated Operating System.
-more-
The INTERP file is the language the program uses
or it may be the program itself.
Applewriter, Basic and Pascal are examples of SOS.Interp files you will
find. Finally, the DRIVER file (SOS.Driver) contains the drivers that enable
the /// to talk with your printer, disk drives, modem and hard disk
properly. At the minimum you will
need the console driver, called ".Console" and you might find others:
".Printer" to drive your printer; ".RS232" operates the
RS232 port or a serial card for telecommunications; ".Audio" lets your
/// beep and play music to you; ".Grafix" is the
graphics
driver. There are many more. You
install these using the System Configuration Program on the System Utilities
disk. In most instances, you want to make sure you have the 1.3 versions of the
drivers installed (WAP /// SIG SOS Drivers PD disk: 3SYS-07)
There
were four total versions of SOS:
1.0
-
October, 1980