First post, by Viserion
In addition to 2 retro systems I wanted to add a 486 dos machine.
As desk space is at a premium(I have waaaay to much stuff 😀 ), I went out and looked out for a Single computer board, as I have an Amiga 2000 that has passive ISA slots I can use it on.
SBCs are generally ludicrous expensive, but did managed to get one that was untested, and reasnoable cheap.
Tested it with a pentium MB(MALA5A) where I had removed CPU and ram.
Have done this before with a PIII SBC before, and this worked fine doing it the same way.
As it doesn't fit that well in my A2000, as the propertary Zorro slots are behind the ISA slots, and blocking PCI and capacitors on that card.
It was also a little too fast for my use.
Anyway, back on track, I tried to turn it on in a bit convoluted way.
Thew card is a 486/5x86 SBC Ver:G9 with a ALI M1989 chipset.
Not been able to find a manuaøl for my card, only a few that is close to the same layout. That means I don't know if the jumpers are set correct.
It's a "IT''S ST 486 DC-100" cpu on the card, and ny first question if is anybody has a manual or know the jumper settings for this.
Second is that the card has a AT style power connector.
Bought a ATX to AT, and with two PSU connected.
One on the MB, and one on the SBC card I tried starting it up, but no reaction on screen(SBC has an inbuilt vga card, but can't remember the type however).
In the manual I mentioned before I did find a pin overvirew over the AT connector, and from the looks of it, it's the P8 that should be connected, and that is what I tried.
CPU does get a little warm when turning it on, but well whitin what one wouyld expect.
I originally wanted to connect a ordinary molex connector by making an adapter out of the AT to AT adapter I bought, but need help figuering out how to make one, as there are more pins to the AT connector than a molex connector.
Just do not wish to make a fire ou of all of this 😵
So that is my second question.