specialised
connectors. Which PCs eventually did (long after Apple did).
Knowing the difference between a keyboard and a mouse was stretching the
limits?
I haev to agree with you. Somebody who can't plug the cable from a thing
with keys on it into a socket marked 'keyboard' (or with a little picture
of a keyboard nest to it) probably shouldn't own a computer :-)
They had different shaped connectors. They color
coded them!
I thought the PS/2 keyboard and mouse connectors were the same (6 pin
mini-DIN). They also have essentially the same pinout, so nothing will be
damaged if you plug the keybboard into the mouse connector of vice
versa.
On older machines it won't work if you do that, you'll get POST erross
because it can't find the keyboard. How difficult is it to say (either in
the error message or in the manual [1]) 'Check that the keyboard is not
plugged into the mouse port?
[1] Yes, OK, nothign these days comes with a manual...
And how often are people going to be plugging/unplugging these things
anyway. I don't maean people like me who are always hackign about with
hardware, I mean most PC users?
Eventually, they just gave up and added an extrea
microcontroller for
each, just so that people didn't have to insert the plugs into the jacks
that fit.
Actually, it;s just a little more code in the keyboard/mouse interface
microcotnrolelr. The protocols are essentially the same, all the thing
has to do is see whateach device identifies itself as and then route the
data accordingly.
-tony