camerongray
Member
Hi,
I recently picked up a pretty sad looking IBM XT but was able to revive it (C56 on the motherboard was causing the PSU to short out, I removed this and it seems to work fine).
The issue I have is that the machine came with the original MGA and Printer port card where I don't have an MGA monitor. I picked up a 'Trident TVGA 9000i-1' ISA VGA card to test but I'm having trouble getting it working. The card is a 16-bit card but I have set the jumpers in order to use 8 bit mode. I also tried with 'Autodetect 8/16 Bit BIOS Interface' jumper set both on and off.
When I boot the machine with the MGA card and DIP Switches 5 and 6 off, the machine appears to boot normally (POST beeps, seeks floppy, HDD lights up (Not sure if the drive works yet)), with the VGA card inserted and MGA card removed with DIP Switches 5 and 6 on, I get the three beeps (One long two short) to indicate a video error, with the VGA card removed in this state, the machine appears to POST normally.
At no point during this does the monitor come out of standby.
It's worth noting that I had to remove C56 to allow the machine to boot which may have caused issues with the ISA's +12v connection, but this is not connected on my VGA card so doubtful this is the problem.
I'm at a bit of a loss here so any help would be greatly appreciated!
Thanks in advance,
Cameron
EDIT:
I have taken a (Pretty poor quality) photo of the VGA card I'm using in case that helps:
I recently picked up a pretty sad looking IBM XT but was able to revive it (C56 on the motherboard was causing the PSU to short out, I removed this and it seems to work fine).
The issue I have is that the machine came with the original MGA and Printer port card where I don't have an MGA monitor. I picked up a 'Trident TVGA 9000i-1' ISA VGA card to test but I'm having trouble getting it working. The card is a 16-bit card but I have set the jumpers in order to use 8 bit mode. I also tried with 'Autodetect 8/16 Bit BIOS Interface' jumper set both on and off.
When I boot the machine with the MGA card and DIP Switches 5 and 6 off, the machine appears to boot normally (POST beeps, seeks floppy, HDD lights up (Not sure if the drive works yet)), with the VGA card inserted and MGA card removed with DIP Switches 5 and 6 on, I get the three beeps (One long two short) to indicate a video error, with the VGA card removed in this state, the machine appears to POST normally.
At no point during this does the monitor come out of standby.
It's worth noting that I had to remove C56 to allow the machine to boot which may have caused issues with the ISA's +12v connection, but this is not connected on my VGA card so doubtful this is the problem.
I'm at a bit of a loss here so any help would be greatly appreciated!
Thanks in advance,
Cameron
EDIT:
I have taken a (Pretty poor quality) photo of the VGA card I'm using in case that helps: