11 Jun
2005
11 Jun
'05
2:47 a.m.
At 17:07 11/06/2005 +1000, you wrote:
Hi,
I've got an old MITS 8800B CPU (Rev 0) board. It's in a pretty sad state and
missing some chips and most of the voltage regulation components. Although I've
seen a few pics on the net of this board, none are clear enough to read the
chips.
If anyone has one of these boards can you pls tell me what chip D, F and K are.
I think D is an 8216, and F is an 8224 clock chip, but would like confirmation.
A circuit diagram would be brilliant, if anyone has one.
D: 8216
F: 8224
K: 8212
Rich Cini has a pile of Altair 8800B documentation on his site:
http://highgate.comm.sfu.ca/~rcini/classiccmp/
Look under "Altair 8800 Emulation", then "Technical Links".
You could also try Howard Hart's site:
http://www.hartetechnologies.com/manuals
You may have to do a bit of digging, the 8800B CPU info may
be buried in the 8800B system documentation.
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html