MITS Altair 680 / iCOM CP6800 Vintage Computer Pertec W/ Manual 680bt 64K READ For Sale

MITS Altair 680 / iCOM CP6800 Vintage Computer Pertec W/ Manual 680bt 64K READ
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MITS Altair 680 / iCOM CP6800 Vintage Computer Pertec W/ Manual 680bt 64K READ:
$2399.00

This is the exceptionally scarce iCOM CP6800 variant of the Altair 680 computer (turnkey). Pertec bought both MITS and iCOM in 1976/77, and for a time continued to sell the Altair 680 under this branding. It is much less commonly seen than the standard 680, which is itself somewhat scarce. This computer is sold as-is, see note below.

Aside from the iCOM branding, this is otherwise a normal "turnkey" version of the 680, so no bootstrap switching is required, it boots to the PROM monitor program. The computer is currently set up for RS232 serial, 4800 baud, 8N1. The speed and stop bits are strappable on the logic board and can be changed if desired; information for setup is in the manual.

The memory board is a new creation from glitchworks, connected via a new expansion riser. See photos. Memory board options (memory ranges etc) are configurable with DIP switches. The logic board omits the RAM, all memory is handled by the added memory board.

The computer works for me in its present situation, and passed Martin Eberhard's exhaustive RAM test (unsurprising since the memory is new), results shown. The serial connection has occasionally seemed a bit fiddly to get going, but with the right settings and the right USB (etc) connection you should be OK. All three LED lamps on the front and all physical switches function.

The manual is original and MITS-branded and includes assembly, operation, monitor instructions. See photos.

SOLD AS-IS. This computer is currently working and will be packed extremely carefully. But systems of this era and style can be temperamental and the hardware is also somewhat fragile, as it was likely built from a kit back in the ancient times. If you plan to really use this computer, you may need to become intimate with the schematics and the manuals (and google). I can't guarantee its continued operation or any particular functionality. I assume if you're looking at this, that will probably not sound mysterious to you. :-) There is software for this computer archived around the web.

Please examine all photos carefully and if you have additional questions please do feel free to ask. Shipping is free within the US, and there are no returns on this item. This is an unusual and nice piece of computing history, and I'd like to see it to a good next home.Thanks!

** Free UPS ground shipping within the United States. **

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Documentation