Questions tagged [isa]

The Industry Standard Architecture bus, used by historic IBM PC compatibles, and extension cards for that bus.

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Monochrome ISA graphics adapter with the smallest footprint [closed]

I am designing an x86 retro computer, and I can't find a suitable 8-bit ISA graphics adapter for it. I don't need much in terms of graphics: mostly I need a text mode in black and white, some kind of ...
tpimh's user avatar
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3 votes
0 answers
174 views

Troubleshooting Legacy Hardware and Software Issues on MS-DOS and Windows 3.11

I have an old PC with the following hardware components: Motherboard: AMI TITAN II EISA rev.D RAM: 48MB of 4 SIMM CPU: 154C Pentium (tm) BIOS: 711011596 HDD1: SCSI controller adapter through PCI (PCI) ...
CluelessENGR's user avatar
0 votes
2 answers
316 views

Using a Roland LAPC-I without a PC

This is inspired by the video Using an old 8 bit ISA sound card (Roland LAPC-I) without a PC. I would like to find detailed instructions (for those unlearned in electronics), including a parts list, ...
ParticleMan's user avatar
4 votes
0 answers
168 views

IDE interface board design review [closed]

Hope this is ok here. This seems to be the place with the real hardware experts. As some of you may recall, I've been trying to get a 44 pin IDE SSD module working on a retro IDE interface. The SSD ...
eesz34's user avatar
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6 votes
4 answers
1k views

On an ISA bus, is data read on the falling or rising edge of /IORD?

This should be an easy one but stick with me here. I think that page 46 of the ISA Bus Specification by Intel shows it's read on the rising edge. Intro to the ISA bus by Mark Sokos seems to agree on ...
eesz34's user avatar
  • 561
4 votes
1 answer
286 views

10 pin --> 26 pin VGA controller pinout and Card compatibility with American Megatrends Super Voyager VLB-III

I'm trying to test an old PC which controls a ABB Bomem FTIR Spectrometer (DA&). The internal PC for this instrument is an American Megatrends, Inc. Super Voyager VLB-III ISA Motherboard https://...
oman's user avatar
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9 votes
3 answers
2k views

IDE SSD pulling down data bus

I obtained a quantity of these IDE 44 pin SSDs for use in my retro computers. At first I simply used an adapter to connect to the 40 pin IDE port, but it caused all sorts of weird problems e.g. the ...
eesz34's user avatar
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0 votes
0 answers
145 views

How to add ISA cards to the Tandy 1000 memory PLUS expansion board

I have a Tandy 1000A with a 25-1011 Memory PLUS Expansion Board (maxed out with 384kB). This board has a single 62-pin connector to add low-profile accessories like a mouse/clock card or a modem. I ...
craig65535's user avatar
10 votes
2 answers
859 views

How do I terminate an ISA bus correctly?

I am stuck by designing a 8 Slot 16 Bit ISA Backplane Do I have to terminate an ISA bus? My search results are: No termination at all Some homebrew projects use active termination for all signals ...
Gonzo's user avatar
  • 213
11 votes
3 answers
2k views

What was the "32-bit" ISA bus (connector) extension for 80386 PCs?

I have a question which is similar to another question on this site: When I was a child 386 PCs came up. When buying a PC, you could read in the technical data how many 8- and 16-bit ISA slots were ...
Martin Rosenau's user avatar
5 votes
2 answers
1k views

How to build an ATA controller for the AT bus?

I would like to replace the ST502 MFM disk controller in my Schneider Target PC 7640 (about which I asked earlier) with an ATA (IDE) controller as it gets harder and harder to find replacement MFM ...
fuz's user avatar
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19 votes
2 answers
4k views

What are these weird long ISA slots on this 386 board? (not VLB)

In this image, you can see, from the right, a 16-bit ISA slot (occupied by a controller card), an 8-bit ISA slot, four more 16-bit ISA slots, and two of these strange slots that look like a 16-bit ISA ...
robbie's user avatar
  • 321
3 votes
1 answer
3k views

Connecting SCM Swapbox PCMCIA reader (ISA) to modern PC

Further to my previous question, I am wondering how best to connect an SCM Swapbox "SBI-D2P" (Classic X2) PCMCIA card reader to a modern PC (PCI/PCI Express/SATA/USB). I am aware there are USB PCMCIA ...
Tomas By's user avatar
  • 2,082
9 votes
1 answer
540 views

AT system without −5 V

I have recently built a 80386 system. Lacking any AT PSU I connected a PicoPSU using an ATX→AT power adapter. Only card connected was a gpu (Trident TVGA 9000i). System performed BIOS checkup sequence ...
padawan's user avatar
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24 votes
6 answers
37k views

How to use ISA card in modern PC

(Posted this on HW Rec but got no responses.) Would like to use an ISA expansion card in a modern PC. There are Expensive PCI - ISA adapters (but I cannot find any actually for sale now) USB-ISA ...
Tomas By's user avatar
  • 2,082