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5 votes
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How to debug BIOS ROM incompatibility?

Depending on your skill level and the hardware you have access to, there are a few possible approaches I can think of: you could read the code for the various BIOSs involved and try to figure out the ...
Stephen Kitt's user avatar
4 votes
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XT IDE causes BASIC not to load properly on IBM 5155

It turns out I can just use GW BASIC instead of BASIC and BASICA. GW BASIC loads up just fine.
Xyz's user avatar
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4 votes

How to image a RLL or MFM hard disk on an XT class PC

If you can’t image the disk using another system (and you probably can’t), I would take a two-pronged approach: copy the files to a partition on a disk on your XT-IDE card; first the system files, ...
Stephen Kitt's user avatar
3 votes

How to image a RLL or MFM hard disk on an XT class PC

I'm considering writing my own using INT13h BIOS calls. Shouldn't be reasonably simple to do. I was writing the comment because I had already the same idea. This is how my code looks like: # .COM ...
Martin Rosenau's user avatar
2 votes

How to image a RLL or MFM hard disk on an XT class PC

I'm just wondering aloud because I have never tried it, nor do I know if it even supports it, but assuming that the drive controller card is ISA, what about putting that card and the hard drive into a ...
Andrew Bowers's user avatar
2 votes
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XT-IDE Universal BIOS does not find master drive on XT CF Lite card

For some reason the AT BIOS BIN file does not detect the CF cards. You have to use the XT BIN file.
Arne's user avatar
  • 1,274
1 vote

How to debug BIOS ROM incompatibility?

I suppose what I would try is moving all the involved ROMs to RAM (a simple byte-copy routine can handle this), but then you would need to search for absolute jumps and retarget them to whatever RAM ...
Ken Gober's user avatar
  • 11.4k

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