This is an old revision of the document!
Table of Contents
PC Pointer
This is a very simple PS/2 to serial mouse protocol converter which uses a PIC micro-controller and MAX232.
Schematics
Two schematics are presented for two different PIC micros. It should be trivial to port this application to any other PIC micro-controller since they all share similar peripherals.
Install
First install gputils for gpasm and Pickle for ICSP (if you are using a Velleman K8048 for example).
Fetch the source and assemble the code.
hg clone http://hg.kewl.org/pub/PCPointer cd PCPointer make
Now program the chip. Here I use Pickle.
p14 program pic16f688.hex
Usage
Plug an old PS/2 mouse or newer USB mouse with PS/2 support into the input port of the circuit. Connect the serial output into the RS232 input of your old computer.
Boot into DOS and detect the mouse with MOUSE.COM 8.20.
MOUSE.COM /C1
Disable it like this.
MOUSE.COM OFF
Windows 95 should auto-detect the device as a generic serial mouse.
