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- Path: sparky!uunet!mcsun!uknet!edcastle!asr
- From: asr@castle.ed.ac.uk (Angus "Fluffy" Rae)
- Newsgroups: comp.misc
- Subject: Taken delivery of an old PC... now what?
- Message-ID: <25393@castle.ed.ac.uk>
- Date: 1 Sep 92 14:32:34 GMT
- Distribution: comp
- Organization: CATHY_VoiceMail_Project
- Lines: 41
-
- Yesterday a friend, knowing that I collect computers from the early
- 80's, dumped an old IBM PC on me. However, knowing nothing of PCs I
- don't know exactly what I've. After a quick shufty around under the case
- here's the info I have, and I wonder if someone out there can fill in
- the blanks. The badge on the back says IBM 5150, and it boots up into
- IBM Basic version C.01, which surprised me - I expected it to complain
- about not having a system disc. The processor is an 8088, with a blank
- socket next to it (coprocessor)? On the board are 4 rows of Ics marked
- Bank 0 to Bank 3, which I take it is memory. Bank 0 is soldered, the
- other banks are empty sockets. (Question here is - can I fit more memory
- into the sockets, and what type?) Above this are two empty IC positions
- with solder dots, marked U100 and U101. There is also an empty socket
- marked U34. (Anyone know what should/can fit in them?)
-
- There are three boards in the slots - one is marked
- "Black&White/Parallel" and has a 9pin socket for the monitor and an
- unknown 25 pin socket, which I assume is a parallel printer port. The
- next card is marked "Addram Plus" and also has a 9pin and a 25pin
- socket. I assume that these are serial ports of some kind, but the card
- also seems to be a memory expansion of some kind. It has a large number
- of what seem to be RAM chips and a NiCad battery marked "DataSecurity".
- The third card is a disc controller.
-
- The discs are 5.25 inch but I'm not sure how much they can hold, or
- whether they can access double sided or not.
-
- The questions I have in specific are - are early versions of DOS (that
- would fit on one 5.25 disc) available PD? Can I replace the processor
- with something a little more speedy? Or is there a coprocessor around
- that will fit in that blank socket? Does the AddRam board need some sort
- of boot software, as the Basic startup said I had 62k which seems a
- little low...? And why the heck am I bothering to do this?
-
- (I can answer the last one - because I'm mad)
- Thanks in advance...
-
- --
- Angus G Rae, the Cuddly Vampire Teddy Bear [asr@castle.edinburgh.ac.uk]
- CATHY VoiceMail, Computer Science Dept., Edinburgh University
- "I'm on the run from the Facist Police with a murderer and
- a mass murderer and a man in a bri-nylon shirt." Rimmer, Red Dwarf V
-