18 Oct
2002
18 Oct
'02
3:44 a.m.
At 10:32 PM 10/17/02 -0700, you wrote:
If I provide pictures and a descriptions of the various
chips, would
anyone here be able to help me identify this S-100 card? First, the
pictures:
http://www.oz.net/~otter/Geekware/Mystery-Board-Front.JPG
http://www.oz.net/~otter/Geekware/Mystery-Board-Back.JPG
The largest chip is marked: AM9513PC 8148HP (c) 1980 AMD.
Universal Priority Controller.
To the right of the DIP switches are 4 socketed chips...
The two smaller ones: F-74LS136PC 7935 Singapore
Quad two input X-OR, OC output.
The two larger ones: 74LS244 PC F 8226 Indonesia
Octal bus driver with TS outputs.
The other 9 chips, in no particular order...
F-74LS368PC 7918 Indonesia
Hex Inverter, three state.
SN74LS00n QQ8130 (has Motorola Logo)
quad two input Nand.
74LS02 PC 8221 Singapore
Quad two input NOR.
F-74LS32PC 8210 Indonesia
Quad two input OR.
435 DM7476N
Dual JK Master Slave Flip Flop with Preset and Clear.
74LS14 F 8248 Singapore
Hex Schmitt Trigger Inverting.
2630 937 (has Hewlett Packard Logo)
Don't know but I think you're missing a digit. HP PNs should have xxxx-xxxx
or zzzzz-zzzzz (4-4 or 5-5) type PNs.
4N26 240F Korea
4N26 231F Korea
Opto-couplers.
I'm assuming that this is a homebrew job. But before I make a
decision on whether or not to stick it in Mintaka, or sell it, I
really would like to know what this card is for.
Anyone have any idea?
Appears to be a digitial IO card. It MAY have digitial outputs but since it has a
priority interrupt controller it almost certainly has digitial inputs. The inputs probably
genreate interupts to the CPU. Appears to use opto-couplers for isolation.
Joe
Thanks
-- Scarletdown