PC PS/2 mouse adaptator for Atari St or Amiga
Features
This adaptator allows to connect your favourite PS2 mouse to your Amiga or Atari St.
The computer type is automatically recognized.
No need for an external power supply.
Description
The heart is a Microchip PIC 16f84.
R1 and C1 are used to obtain a 4 Mhz clock frequency for the pic.
Two pull-up resistors are necessary (R3, R2).
A pull-down resistor (R4) allows to detect the computer type.
The whole thing should be inserted in a DB9 cover.
This adaptator has been tested on an Atari 520 STE, Amiga 500 and 1200 HD.
The PIC is not yet full... So if you have any idea : contact us.
Connectors
|
DIN PS/2 |
| 1 |
DATA |
| 2 |
NC |
| 3 |
GND |
| 4 |
+5V |
| 5 |
CLOCK |
| 6 |
NC |
|
|
|
DB9 |
| |
Atari |
Amiga |
| 1 |
XB |
YB |
| 2 |
XA |
XA |
| 3 |
YA |
YA |
| 4 |
YB |
XB |
| 5 |
NC |
MIDDLE BUTTON |
| 6 |
LEFT BUTTON |
| 7 |
+5V |
| 8 |
GND |
| 9 |
RIGHT BUTTON |
|
Source code
Download MPLAB project
Sample
