Re: [CAD_CAM_EDM_DRO] Joystick connections

Hi Alan,

it does at least partly conform to the standard they just cramed in
the MIDI port on two of the extra power pins

the oldest documentation on the game port I found was a programing
book from 1984 (for the Original PC) that lists the pinout as

pins 1,8,9,15 = +5V (both outermost pairs)
pins 4,5,12 = gnd (three in the center)

pin-3 = analog-1 = bit-0 of port 0x201
pin-6 = analog-2 = bit-1
pin-11 = analog-3 = bit-2
pin-13 = analog-4 = bit-3

pin-2 = digital-1 = bit-4
pin-7 = digital-2 = bit-5
pin-10 = digital-3 = bit-6
pin-14 = digital-4 = bit-7

MIDI is a serial port usualy at 0x330 (MPU-401 compatable)
with its own command set and protocol
check out
MIDI adapter for the game port schematics
http://www.whiten.co.uk/midi.html
http://www.mupro.de/joy_midi.htm
or for soundblaster (diffrent pinouts again!)
http://www.borg.com/~jglatt/hardware/pc_intfc.htm
and
and some info on the MIDI protocol
http://www.harmony-central.com/MIDI/Doc/

I've seen at least one article on hacking the midi protocol for
some other use ,so maybe it could be hijacked for machine control
possibly to comunicate with a PIC chip as an external PLC?

hmmm...
Brian

On Friday 06 April 2001 22:38, you wrote:
> Hi to the List,
>
> I found out that not all joystick cables/interfaces define the pins the
> same! I have power on pin 8, which appears not to be standard! And pin
> 7 is a switch, not power. So here's a list of pinouts I found, and the
> site with more information.