Replica 1 TE Users Manual
© Briel Computers 2007 page
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The replica 1 expansion header was designed for the hobby engineer in mind. The Apple 1 expansion slot gives
the user the ability to use Apple 1 compatible boards, or expanding even more with the edge connector and the
3 slot adapter.
As well as being able to run all the original Apple 1 software and hardware, the replica 1 has the capability to
use modern hardware like a ps/2 keyboard and use a standard PC ATX power supply or wall brick power
supply to power the replica 1. The added Serial port gives the user the ability to download programs right from
your PC or Mac into the replica 1 making software sharing possible.
Figure 4: Logic diagram of replica 1 TE computer
Keeping a simple design structure was important with the replica 1. Chip reduction is the way Woz designed the
Apple 1 and the replica 1 follows in its path. While it’s true that the replica 1 TE board contains more IC’s than
the original replica 1, the added features give the user flexibility that wasn’t available before. The TE (Third
Edition) replica 1 uses the new Parallax Propeller as the I/O controller. This new micro-controller has the ability
to handle all I/O including video, serial, and PS/2 port. This feature reduces chip count and eliminates the need
for jumpers.
While the replica 1 has been in production for 5 years, it is always a work in progress. Sometimes bugs and
fixes come up and changes to the board are always discussed on the replica 1 forums. For the latest in design
changes and modifications, see the replica 1 forum at:
http://www.brielcomputers.com/phpBB2/
The replica 1 TE is currently the most advanced replica Apple 1 produced. It encompasses features as requested
by current or future owners of replica 1, as well as design improvements, bug fixes and other enhancements.
All revisions remain backward compatible with the original replica 1.