Questions tagged [motherboard]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1
vote
0answers
53 views

Soltek SL-52B2 motherboard manual

I'm looking for the manual of this motherboard. Google can't seem to find one for this exact model, only similar ones. Help appreciated, thanks!
2
votes
1answer
94 views

Asus SP97V motherboard not powering up

I found an Asus SP97V Pentium-I motherboard. It works with both AT and ATX power supplies. At least it's supposed to, because it actually doesn't. I put a Pentium 120 CPU, four RAM modules and a ...
11
votes
1answer
1k views

32-bit PCI riser cards: different types?

[copied from superuser.com] I'm duplicating an existing compact PC; I'd love to replace it with modern components, but for various reasons I can't. I'm having a tough time finding the correct 32-bit ...
5
votes
2answers
366 views

How can I tell if my old PC supports > 137 GB hard drives?

I have an old PC from 1999 that has an ASUS P5A motherboard. When I power it on, it says ASUS P5A ACPI BIOS Revision 1011 Beta 005 and 05/02/2002-ALADDIN5-<<P5A>>: I recently read that up ...
2
votes
0answers
88 views

304-Keyboard or System Unit Error — Compaq Prolinea 4/25s

I've recently got this error: 304-Keyboard or System Unit Error when booting my Compaq Prolinea. I've tested the keyboard on another computer and it's fine. I don't have another PS/2 keyboard to ...
0
votes
2answers
219 views

CPU slaves on a PCI card to retrofit single processor to multiple processors. Any ideas how? [closed]

My desktop computer is no longer manufactured and no longer supported since more than 18 years ago. It was a very expensive top of the line business computer back in the day. I like it and wish to ...
10
votes
1answer
286 views

Rationale for almost heatsunk TO-220 packages on C64 motherboard

The TO-220 packaged VR1 regulator and Q1 transistor in the Commodore 64 motherboard (reference designators cited here from the Rev. B breadbin) are mounted in a way that suggests they were supposed to ...
3
votes
1answer
466 views

What is this socket for in 386 notebook motherboard

What is this socket for on 386 motherboard? I have no manual, no documentation and no resources readily available for this machine (Commodore C386SX-LT). Source: Probably oldcrap.org Close-up: ...
0
votes
0answers
123 views

Portable 386 that only ever beeps continuously; no video

I've acquired a late-80s portable 386 with builtin LCD in unknown working state. It only ever beeps continuously on boot, with no picture on either the built-in LCD or an external VGA-connected ...
20
votes
2answers
7k views

Why did Socket 3 have more pins than needed for the 486?

Intel's Socket 3, used for 486 processors, was a 19×19 pin grid array socket. However, all compatible processors, to my knowledge, used 17×17 PGA packages. What was the point of the extra pins around ...
0
votes
2answers
233 views

IBM PC 5150 motherboard labelling

The motherboard of the IBM PC 5150 has labels of letters followed by numbers. What are the letters representing? Examples being U1, P1, C1, T1 and Y1. I am trying to ascertain which component is the ...
20
votes
2answers
2k views

What causes the traces to wrinkle like this and should I be worried

I have a Macintosh SE in my collection and I noticed these odd looking traces on the mainboard. Not quite sure what to think of it
1
vote
1answer
441 views

Can you help me identify this AMD 386-DX40 motherboard?

I'd like to find some documentation for this mainboard I just picked up for my very first retro computer, but I don't see any brand or model markings whatsoever. Does anyone have any tips? P. S. I ...
11
votes
3answers
2k views

Small RAM 4 KB on the early Apple II?

Most of the reference material for the Apple II that I have seen refers to the 4116 RAM chip which held 16x1 kbit. This provided 16, 32 or 48 KB in banks of 8 chips. The Apple II motherboard layout ...
16
votes
5answers
4k views

What was the first multiprocessor x86 motherboard?

I know dual socket motherboards were around in the 90's before Intel released the Core series. And SMP hardware and operating systems have been around earlier than the PC platform of course. ...