This is a adapter to connect a PC-keyboard to any Amiga. This is not programmed by me, I just made some modifications. Thanks to the authors who I do not know and I could not contact. It was freeware and it will stay freeware. I hope that is okay.
Table of contents:
|left windows||left Amiga|
|right windows||right Amiga|
|windows menu||left Amiga m (cycle screen)|
|right or left control||Control|
the interface will send rawkey codes for these xtra keys as follow:
So you could use an external program to bother with these codes.
If you leave P3 unconnected nothing happens. If you tie low the P3.5 the delay before a reset will be 32 * 70ms. All the pins of P3 at gnd and the delay will be 255 * 70ms that's too much!
front view NOT solder view /--v--\ 1 = KBClk |3 1| 2 = KBDat | 5 4 | 3 = NC | 2 | 4 = Gnd \_____/ 5 = +5vAt some A500 manuals pin 1 and 2 of the keyboard connector are swapped!! *arrrgrrrr* In this case you will get a lot of ''''''''' even without a keyboard!
Keep in mind that the AT89C2051 has no pullups at P1.0 P1.1 so pull P1.0 and P1.1 to GND
Signals are available at:
The part description in schematics is read as follows:
part type + value in exponential form + package description + subpart number in package
for example: C1040805,1 means Capacitor, 100nF, package SMD 0805, first subpart in package
Disclaimer: No warranty at all!
Copyright by Martin Clausen, Germany.
Contact the author: mc AT rotgradpsi DOT de