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20. Hardware incompatibility

Several people have noticed that they lose typed characters when a floppy disk is active. It seems that this might be a problem with Uni-486WB motherboards. (Please mail me to confirm [yes, I have the same problem], deny [no, nothing wrong with my Uni-486WB], modify [My Xyzzy machine has the same problem].)

Some people experience sporadic lockups - sometimes associated to hard disk activity or other I/O.

ulf@rio70.bln.sni.de (Ulf Tietz) wrote: `I have had the same problems, when I had my motherboard tuned too fast. So I reset all the timings ( CLK, wait statements etc ) to more conventional values, and the problems are gone.'

bhogan@crl.com (Bill Hogan) wrote: `If you have an AMI BIOS, you might try setting the Gate A20 emulation parameter to 'chipset' (if you have that option). Whenever I have had that parameter set to any of the other options on my machine ('fast', 'both', 'disabled') I have had frequent keyboard lockups.'

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Additions and corrections are welcome. Andries Brouwer - aeb@cwi.nl


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