Bun's Lab – Telegram
Bun's Lab
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Electronics projects, vintæg computing, programming and repairs. A minimalist blog of sorts.
@BunsGarden @BunsNook
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On board graphics ... but not VGA.
So, JP18 disables the onboard graphics chip. Making the use of a separate ISA VGA card possible
The board is from a Mitac Paragon MPC2000SL, it has a label of "PWA-286SL", but there is zero documentation of it on the internet. The version with VGA instead of this Paradise EGA chip is called MPC2000VE and that was sold, for a short while in Western Europe, as an Atari PC4. More on that here: https://www.atari-computermuseum.de/pc4m.htm
JP18 on this board disables the onboard graphics and is near the graphics chip. On the SL the jumper is in the very front. The trace however runs all the way to the back, and lo and behold, it does turn off the onboard graphics. Who knows, maybe the other jumpers are identical in function too?
Can anyone recommend a Bluetooth sound output module that isn't total jank but also doesn't break the bank?
Today on the bench .. just kidding, I just need a computer real quick to install DOS to a CF card. PCem didn't work out for some reason.
Tool-less design until you want to swap a card
Socket 5. Sadly not a gold cap
122Mb 😂 in a Pentium
Now that is cool
There is data on this drive.
Hanging boot bug with XT-IDE again..
Ok I don't understand this: when I create an image of the empty CF card, use that with PCem to install DOS, write it back, it doesn't work. When I do the same with the Vectra, it works in the Vectra but not with the 286. Not with XT-IDE, and also not when I use the original BIOS routines with the CHS settings that the Vectra detects: 978,8,32. All I get is "missing operation system".
I've also been having problems with DR-DOS and Compaq MS-DOS 3.34 and these 128Mb CF cards.