waterbeesje wrote on 2022-06-21, 17:31:Some thoughts. […]
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Some thoughts.
Since you have 8 and 32MB I suspect you're using 72 pin ram.
Are you sure you're using fastpage and not Edo? Lots of 486s have trouble with Edo.
Could you set the timings to their slowest? Our at least fail-safe settings?
You say you disabled external cache. How about internal? Just for troubleshooting.
Are you able to try DOS 7 from a Windows 9x boot disk? Just to make sure it's not a corrupted command.com
Have you loaded any other programs/tsr? Try renaming autoexec and config to *.old and reboot without those. Just basic dos without himem or so. Any other memory optimiser is a major suspect as well.
Try to use a small hard disk, say about 256MB max.
Thanks for the response, I've tried the things you've suggested:
It is 72-pin RAM, however I'm not sure how to tell if it's fastpage or Edo. The 8MB stick is the one the board came with.
I don't see any fail-safe settings but I attempted to set timings to their slowest speeds with no change (It's the AmeriBIOS with the 'GUI').
Disabled internal cache with no luck.
I'm able to run from a Windows 9x boot disk fine, can run edit and other utilities from the disk just fine. I can only install (but not practically use) DOS 6.22 and a DOS 7.1 installation hangs at initialization.
No programs or tsr, I've done nothing except a fresh install of the OS and using a bootdisk to modify my config.sys to disable the HIMEM memory test as it causes the system to hang.