This is purely a hobbyist endeavor, originally motivated simply by
the desire for a Rev 0 board to use in my original Apple II.
Also, the flakey nature of the existing motherboards that I
have been using, has been a significant motivating factor.
Building a single PCB was not economically sensible, so I
initially built 6 with the lowest pricing that I could find.
I only needed 2 boards, so decided to put together kits for
other hobbyist that might be interested in this project.
Much to my delight, the initial lot of boards has been
It has been a lot of fun and a challenge to try to find best
source for each component. This search has become an
interesting hobby unto itself for me.
If you are interested in building a rev 0 replica for yourself, I
would hope that you have some previous kit building experience.
If not, I would start with a smaller project, such as one of
Vince Briel's Apple 1 replica kits. There are over 2500
holes on this board, most of which have the leg of a component in
it. This project cannot be done in one evening.
10 Reasons Why You Should Build a
Rev 0 Replica:
Additional components required:
In addition to a PCB and some basic tools (such as a
soldering iron), you will need the following components, in
order to operate your rev 0 motherboardl:
- Building a computer is fun and rewarding.
- Original Apple rev 0 systems are rare (about 6000 made) and
costly to obtain. If you run across one at a bargain
price, let me know, as I have been looking for several years.
- Your original low serial number Apple II lost it's rev 0
board somewhere along the way.
- A replica rev 0 will be more reliable than a typical 30 year
- Early micro-computers are great vehicles for learning about
the basics of computer technology.
- Unlike some early micro-computers, a rev 0 Apple II is a
completely functional computer. Back in the early 80's,
after adding two Disk II, floppy disk drives, my mother
was able to computerize her accounting business with my
original rev. 0 Apple II.
- A rev 0 Apple is a great tool for learning other aspects of
electronic design. An example is the shutter tester card
I built using my Apple II, just a couple of years ago.
- Integer BASIC and Applesoft BASIC are languages that are
ideal for learning the basics of computer programming.
I launched a career in software engineering by learning
Apple Integer BASIC.
- Many, many programs are available for the Apple II (most are
free to download from various web sites).
- Having built your own computer, you will have bragging
rights around your neighborhood.
Many of these items can be obtained by locating and
purchasing a relatively inexpensive Apple II plus computer.
- Components - see this page
for more information about what is needed and where to get it
- Applesoft or Integer basic ROMs - see this page for more
- Apple II compatible power supply
- Apple II compatible ASCII keyboard - I make
a compatible PS/2 keyboard
adapter kit for this application
- A TV or monitor with composite video input
- Power, keyboard and composite video cables.
Your best (and most inexpensive) bet is to buy a complete Apple II
plus, which are very inexpensive on ebay, in order to source
Preview the manual:
Download and read the manual which can be found with this link
Note about ongoing
changes to kits
Ordering and Availability:
- Due to the vast amount of time required to put together
kits, I currently only ship bare PCBs for Apple II rev 0 and
Mimeo reproductions. Most parts are available from
standard Unicorn Electronics (http://www.unicornelectronics.com)
stock. See this
page for more information about what is needed to build
a motherboard and where to get it.
I no longer sell Apple II rev
0, kits, boards or documentation. However, if you are
willing to try to make your own boards, I have made the CAD
package package available for download here
Example original Apple II Systems
with rev 0 motherboard seen on Ebay
|Apple II Rev 0 Physical
||14.275 by 8.5 inches
|Replica silkscreen fonts
||custom designed replica fonts
|Ordinary trace width
|PCB holes of all types
|Total number of components
|Different component types
I watch ebay closely for original Apple II items.
Most of the Apple II's seen there, do not have a rev 0
motherboard. Occassionally an Apple II shows up that does
have a rev 0 motherboard in it. I've decided to log the
ending prices of those auctions I've noticed on this page.
||mobo #2000; toggle switch power supply; later version
autostart ROM monitor
||mobo #1579; A2S1-1298; toggle switch power supply;
||mobo #5353; A2S1-5163; PS - A2M001; 2nd or later rev
keyboard; Applesoft roms; extras
||mobo #3155; A2S1-2869; early PS; 2nd or later rev
keyboard; Integer roms; custom case; extras
||mobo #1-454; 3rd party case, keyboard, PS;
Applesoft ROMs, includes FW board with integer
ROMS & early paddles
||mobo #2688; A2S1-2410applesoft ROMs, later rev keyboard
and power supply; condition unknown; minor mods
||mobo #4669; A2S1-4573; integer ROMs&applesoft card,
PS-A2M0001-4526, condition unknown, case, raised power
||mobo#504X;A2S1-4877; applesoft ROMs, PS - A2M001,
original box, carrying bag with no bite, keyboard probably
||mobo#???;A2S1-676;early keyboard;probably early
||mobo#890;A2 plus case & keyboard; 3rd party PS; rom
card with integer ROMs & Applesoft ROMs on MB; 6 color
mod on MB removed
||mobo#3297;A2S1-3149; integer ROMs, PS - A2M001/3297,
raised cap keyboard (not sure whether it is 1st or 2nd
||mobo#3098;A2S1-2812;integer ROMS, replacement PS, dome
cap keyboard - but no details on if it is original.
||mobo#????;A2S1-2411;applesoft ROMS, replacement PS,
first rev keyboard (missing power cap and broken keys)
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