syzygy
Experienced Member
With more whim than need, I bought a small cache of boards [$50+$15s+3t]. They looked clean and I could identify, and use, a few of them. So, I figured I would bid and if they went for much more, I would be fine. I was the only one who bid! I am happy. They are all *very* clean and really look new. I'm just starting to do some research but I know there is a lot of experience and expertise on here and am hoping for some identification/information/opinions.
1. Serial/Parallel board. Run-of-the-mill and I even scored a manual courtesy of @modem7. Easy enough for me to test out.
2. MDA I have seen some with 1981 date coded chips. This one is early but not that early. Still, very nice condition, even the edge card teeth are clean. Again, easy enough for me to test out.
3. Like it says, 256K memory, but I have not seen these before because I never had a real IBM PC I need to learn more before I try to test this one out - my clone has 640K on the MB and I don't want to just slap this board in there without knowing more. Notice that 317 regulator on the board?
4. I don't know. There are two boards connected. I have seen pics of an IBM PGA that were connected but they didn't look like this. This does look like a video board of some kind.
After some careful examination, I eased the boards apart.
4.a
4b (has a 9 pin connector on the edge, 84/85 date code chips)
5. Obviously a power supply board. If you look here, you will see some of the identical numbers on that PS and it's from an IBM S/36 5364. I wonder if the last two boards could be from one of those?
6. ?
7. ?
They also came with two IBM anti-static cases, which are quite cool.
1. Serial/Parallel board. Run-of-the-mill and I even scored a manual courtesy of @modem7. Easy enough for me to test out.
2. MDA I have seen some with 1981 date coded chips. This one is early but not that early. Still, very nice condition, even the edge card teeth are clean. Again, easy enough for me to test out.
3. Like it says, 256K memory, but I have not seen these before because I never had a real IBM PC I need to learn more before I try to test this one out - my clone has 640K on the MB and I don't want to just slap this board in there without knowing more. Notice that 317 regulator on the board?
4. I don't know. There are two boards connected. I have seen pics of an IBM PGA that were connected but they didn't look like this. This does look like a video board of some kind.
After some careful examination, I eased the boards apart.
4.a
4b (has a 9 pin connector on the edge, 84/85 date code chips)
5. Obviously a power supply board. If you look here, you will see some of the identical numbers on that PS and it's from an IBM S/36 5364. I wonder if the last two boards could be from one of those?
6. ?
7. ?
They also came with two IBM anti-static cases, which are quite cool.