At 10:28 �� 14/11/2001 -0500, you wrote: >On 11/14/01 at 9:37 PM Phoebus R. Dokos wrote: > > > I did use a PS/2 mouse when I had my Aurora/sH :-) It's a standard > > serial port apart from the difference in the packaging (mini din instead > > of Sub-D9). > >NO!!! This is NOT correct!!! >There are mouses that will work as either PS/2 or serial using a mini-din >to D9 adapter, but it is NOT the general case. Some mice ONLY work as PS/2 >and some only as serial. Even universal mice (PS/2 and Serial) usually use >different pins on the mini-din for serial conenctions. >PS/2 is NOT a serial port (and if you insist I will post the relevant >specs). It is a synchronous port that requires a clock and a bidirectional >data line, which are all 5V only. The signal spec is the same as the PC >keyboard, NOT the serial mouse. Connecting a PS/2 only mouse to a serial >port can damage the mouse. > > > I was thinking it wouldn't work at first but I was influence from > > the PC which uses the PS/2 port as a different kind of serial > > port with its own IRQ and only one baud setting. > >No it's not. It's actually another keyboard port, and is handled by the >same microcontroller (8042), just using a different interrupt. > > > However from an electrical standpoint its 100% the same :-) > >Not even nearly.
My specs then must be completely wrong (I got them off Elektor Electronics Mag about a 100 years ago ;-) *actually it was the year IBM first introduced the PS/2 - I do remember that- but I only have a photocopy now and it was huge (A2 actually and had all the ports and specs used in PCs at the time) and unfortunately it had to be cropped (so the issue and year are gone :-( ) Anyway, if what you say is true (and I believe you totally - You da man with electronics anyway;-) then the mouse should be doing all the work. In that case (and since I have tried hundreds of mouse brands (I used to manage a PC superstore in Greece if you recall) then most of them would work (because most of them DID work with a serial and a PS/2 to D9 converter) so just equipping the sH with the converter directly should work with at least 80% of the mice in the market today... so no biggy :-) Phoebus >Nasta
