First post, by Jed118
This one has me stumped - the patient is a 486 DX2/66 with a VESA local bus video card and a 16 bit I/O card, 1.44 and 1.2Mb floppy, a Conner 240 Mb hard disk and some kind of CD-563 IDE CDROM. The mouse will not initialize at all (CTMOUSE gives it default COM1 Mouse Systems Mode whereas the Microsoft v8 mouse driver will not detect the mouse so it will not load a driver - either way, DOS's EDIT and MS Windows 3.1 do not show a moving cursor).
Things I have tried:
-Swapped I/O card into another PC and tested it with a handful of mice - all mice work with both drivers
-Tested other known good I/O cards in the troublesome 486 with all those tested mice - no dice
-Restored CMOS to default power on - no dice
-Tried with a different video card - no dice
There's nothing else in the system currently, just the video card and the I/O card.
Here's where I got somewhere - I unplugged the IDE channel entirely from the controller card and booted from a diskette, then loaded the Microsoft mouse driver - it found a mouse and loaded it on COM1 - I did not have a program to test it (I'll get QBASIC and EDIT on the boot diskette in the next coming days). I thought it might be the CDROM, so I disconnected it from the chain (IDE cable). No change. Swapped the hard disk with one that had only COMMAND.COM on it (Still with CDROM disconnected), manually loaded mouse drivers - no dice.
Normally I'd throw a BUS mouse at the problem but a similar thing happened a couple weeks ago with a 386 (I didn't test as deeply, but the I/O cards and mice I used were from the same known good batch) and it, yeah it just didn't work. So I threw a BUS mouse at the problem 😜
Anyone ever encounter something like this? I have no more BUS mice!
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