Messages in this thread | | | Date | Sun, 12 Dec 1999 20:21:13 +0000 | From | Derek Fawcus <> | Subject | Re: keyboard scancodes |
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On Sat, Dec 11, 1999 at 10:12:36AM +0100, Vojtech Pavlik wrote: > > All i8042's I've tested (and I've tested a lot of them) support > switching the AT->XT conversion off. Most keyboards (not all, > but that isn't too big a problem) support switching the AT emulation > off, too.
Agreed on the i8042 translation, a few years ago I tested this in embedded PC environments, and every board I found allowed they keyboard controller translation to be turned off. This would increase the amount of data sent (f0 prefix for down code if I remember correctly), but subsequent translation is a hell of a lot simpler.
If by the keyboard switching, you're referring to the scan set it supplies (set1/set2/set3), then there is a problem. For some of the keyboards I tested, changing out of the normal set (set2 I think) would crash the keyboard. The only way to then recover was to power cycle the keyboard.
DF -- Derek Fawcus derek@spider.com Spider Software Ltd. +44 (0) 131 475 7034 PGP/GnuPG Keys available
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