14 Jul
2000
14 Jul
'00
10:45 a.m.
I found this type SFI-534 card in an IBM 5155 I recently bought. No
software for it was on the 5155's hard drive (21mb Seagate).
What is intriguing is what is on this board:
MC6809P (socketed)
MC6850P
MC6840P
MC6854P
HY6264P-10 (x2)
HD46504P/HD6844P
AM2130-12PC (socketed)
27264-25 EPROM (socketed)
DB9M and DB9F
The board is switch selectable to be addressed anywhere from CA000-CA3FF
through D3000-D33FF.
It looks like it can be a lot of fun to play with if I can find any
information (I.E. Schematics, etc.). From what I've found out so far,
this board uses RS-422 for communication. All the receivers/drivers and
protection circuitry is under the metal cover.
Anyone know anything about this board?
There's one very similar to it on eBay now:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=381126929
,with photo.
I put a $0.01 bid on it just so I can easily track the action, so if
anyone else wants one of these boards, feel free to bid on it also. I
have no desire, yet, to own another one.
Bill
**************************************************************
Bill Dawson
<mailto:whdawson*at*mlynk.com> <- Anti-spam protection
?
Your computer will do far more than you ever expected it to,
and that won't be enough.
Pournelle's First Law