First post, by naujoks
I have a 486 33Mhz on a Biostar MB-1433PA-CH board and I'm having trouble with the mouse under DOS.
The board needs an ISA controller card for serial ports (it has no PS/2 ports).
The mouse works perfectly under Win3.1 and Win95, but is erratic under all DOS applications such as games. It seems to generate random mouse movements and clicks on its own.
The only other card I have on the board is a SB 16 (on IRQ 5).
I can set the IRQs of COM1/COM2 manually on the controller card and I have tried all possible IRQs (3, 4, 7, 9) but nothing makes a difference.
For the driver under DOS I'm using CTMOUSE 1.9.
Any idea what the problem might be?