On Fri, 25 Aug 2000, Hársfalvi Levente wrote: > Well probably. Once I was thinking on leaving the serial mouse idea in > favour of the PS/2 mouse, but I had no infos on this latter. Does anyone > on this list have docs for the PS/2 mouse? (Connector layout, protocol > and so on). Indeed, supplying the appropriate voltage level have been, > and is still a critical part in the interface design (at least, if one > wants to avoid using integrated dual voltage doubler chips and the > like). I started with using some 555+diodes+capacitor based circuit, > then swapped it to a TL497, then left the whole part and powered the > mouse from the single +5V (current prototype board). Some mice still do > work from this supply, some not. I don't want to rely on this > possibility, so I'll either include a small voltage multiplier, or > forget the whole idea and move to the PS/2 mouse (which one, depends on > how much troubles will I have with the voltage part, and if some of you > can point me to a PS/2 mouse info source). Here's a good one on HUT: http://www.hut.fi/~then/mytexts/mouse.html I also found an AT/PS2 keyboard text: http://www.arne.si/~mauricio/Kbdfaq.htm Richard -- Richard Atkinson Software Engineer Tenison Technology EDA Ltd http://www.tenisontech.com/ - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tcm.hut.fi.
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