[comp.sys.ibm.pc] 386 SX and Logitech mouse

jkeys@orion.oac.uci.edu (Jerry Keys) (02/17/90)

I have tried using a Logitech mouse in an AST 386 SX with disappointing
results. The mouse pointer jumps across the screen as I move the mouse. 
It behaves as though the SX is very slow or the Logitech controller is
reporting positions very slowly. The mouse controller is set for a 60hz
report rate (double and triple checked!), and the SX is operating at 
16mhz. Also, I have double and triple checked that there are no 
interrupt conflicts with any other boards in the system. The real 
frustrating part of all of this is that I have tried the same controller,
mouse, and software on an 8mhz 286 AT system and the everything works
very responsively. I have also tried the same thing with a Microsoft
mouse with similar results, although not quite as bad. The some hardware
and software was used on a 20mhz 386 with, not surprisingly, quick
responsiveness. Lastly, the software being used is Aldus Pagemaker. Does
anyone have any ideas about what the problem is? I'm stuck and can't
think of what to do next. The vendors have not been able to offer 
anything helpful.

Jerry Keys
UC Irvine