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marcoguy
September 24th, 2013, 08:45 AM
Hi everyone, it's been a while since I've been on the forum, but I recently decided to dig out my old XT system and fire it up. Unfortunately, it's been having some problems. Instead of loading my GSI Model 11's BIOS, it just spits out the ROM address, gives me a 601 error, and after I hit F1 it boots into BASIC. I tried removing every card but that one and the VGA card, no go. I then tried to change the BIOS address on the Model 11 and the only difference is that it displays a different address on startup. If you can help in any way with this, I'd greatly appreciate it. Thanks!

Stone
September 24th, 2013, 09:26 AM
Since that's a floppy/controller error why don't you try a standard FDC/drive and see what the result is? :-)

marcoguy
September 24th, 2013, 10:09 AM
I tried the original IBM floppy controller and that doesn't work either, the floppy drive just stays lit up and shows no activity and I still get a 601 error. I don't think the problem is with the controller though, because my SCSI BIOS isn't being detected either (I tried both the SCSI card and the FDD controller separately).

Chuck(G)
September 24th, 2013, 10:13 AM
Perhaps you have the floppy cable reversed? The floppy should not be selected immediately at power-on.

marcoguy
September 24th, 2013, 10:19 AM
No, I triple checked the floppy cable and it's definitely not reversed. I really don't think the problem is just with the floppy drives though, because as I said before the BIOS of my HDC isn't being properly read either.

Stone
September 24th, 2013, 10:26 AM
The floppy drive is known to be good, correct. I mean you tested it elsewhere, today.

marcoguy
September 24th, 2013, 10:40 AM
Yes, I tested the floppy drive in my Compaq Deskpro 286 that has a known good FDC and it worked fine, I could boot DOS from a diskette.

Chuck(G)
September 24th, 2013, 11:24 AM
Please bear with me as I try to get this one straight in my mind. The floppy drive select light comes on and stays on the moment you power the system up, right?

marcoguy
September 24th, 2013, 12:18 PM
Yes. When I just connect my A drive it's light stays on from the moment I power up to the moment I shut down, and when I connect the B drive they both do. This happens with both the standard IBM controller and my GSI model 11. In addition to this, the Model 11's BIOS is not properly executed.

Al Hartman
September 24th, 2013, 12:49 PM
Yes. When I just connect my A drive it's light stays on from the moment I power up to the moment I shut down, and when I connect the B drive they both do. This happens with both the standard IBM controller and my GSI model 11. In addition to this, the Model 11's BIOS is not properly executed.

Chuck is right, that is a symptom of the floppy cable being backwards. When you tested the drives on the Compaq, did you use the same cable plugged in the same way?

You have one end of that cable plugged in backwards. The drive lights staying lit are the classic symptom of that.

marcoguy
September 24th, 2013, 01:26 PM
Trust me, that was the first thing I checked. I can guarantee the floppy cables are not backwards. I have Pin 1 lined up on the controller and the drive, and I used the same cable configured the same way on the Compaq.