Side cars that offer a serial mouse port, Microsoft PCjr Booster Module, which I had back in the day, and was lucky
to find another on ebay.... this was a nice mouse and had a steel roller ball.
MSPC paint worked well and you could spend hours many playing with the 4 color interface,
The Whales and The House were always my favorite..
But today I use a regular ball mouse 2 button MSMouse (see below) for Turbo Pascal 7 attached to the Rear serial port using mouse704 driver...
I do miss the scroll button as I reach for it from time to time
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
These are still available on EBAY for around $20 and work pretty good....
See the Serial Port forum for the serial cable I built for this mouse.
viewforum.php?f=31
WinWorldPC has a wealth of software including the paint programs.
www.winworldpc.com
![Image](https://www.pcjribm.com/pcjrfiles/PCJRBoosterAD.jpg)
![Image](https://www.pcjribm.com/pcjrfiles/MSPCPaint1.jpg)
![Image](https://www.pcjribm.com/pcjrfiles/MSPCPaint2.jpg)
![Image](https://www.pcjribm.com/pcjrfiles/MSPCPaint3.jpg)
![Image](https://www.pcjribm.com/pcjrfiles/msserialmouse.jpg)
https://www.pcjribm.com/pcjrfiles/mouse704.zip