Posted By
MMS
on 2014-03-10
16:19:34
 |  Re: PHILIPS CDI JOYPADS WORK FINE WITH YOUR PLUS 4!!
BTW back to the original topic:
Though CD-I seems to use physically same looking port as Plussy, if I am right they seems to be a kind of serial protocol, like RS232 and not a direct linkage to any specific direction, the pressed buttons and directions are coded.
Probably it could be linked somehow to User Port of Plussy and decoded with a proper resident driver...
But anyhow those two are not identical any more...
CD-i Player Serial Pinout Pin (PS/2 like with 8 pin)
1 not connected
2 RXD
3 TXD
4 DTR* (used as a power supply)
5 GND
6 CTS
7 RTS
8 +5V
Plus/4 Pin layout
(just for reference, everyone knows it. 
copied from Levente Harsfalvi great joystick article, worth to read it !)
1 UP
2 DOWN
3 LEFT
4 RIGHT
5 +5V
6 FIRE Button
7 GND
8 Select
The article I refer to:
ftp://www.zimmers.net/pub/cbm/plus4/plus4joy/plus4joy.html
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