Mike's PCjr Page

The Official IBM Cassette Adapter Cable has three audio jacks for a tape cassette recorder, one minijack for the Ear or Headphone jack, one microjack for the Remote jack and a second minijack for the Aux jack. My modern tape cassette recorder only has a Ear, Rem and Mic jack. Mic jacks require a muc...

I returned my PCjr. to a pure, Tandy-modless, state and the Scubaventure problem went away. It also seemed to eliminate a garbage line (which did not affect gameplay) in Mouser.

If you were to use PC-DOS 2.1 with the jrIDE, would there be any benefit besides less lower conventional memory used compared to DOS 3.3? The less conventional memory used is not that great a benefit, since DOS is loaded in the slow system board memory, whereas programs run in the fast jrIDE memory....

I found out that you can play music through Personal Deskmate 2's music program. In order to hear it, however, you just have to set the audio multiplexer with a program like tdysound prior to loading Personal Deskmate 2. The only serious issue is the ddoouubbllee cchhaarraacctteerrss with keyboard i...

Colorpaint was originally designed for use with mice that connected via sidecar. So it was of course possible to have mouse + compact printer connected at the same time. I think the problem may be an conflict between the PCjr. BIOS and the ColorPaint program. Surely you didn't mean to write this ;-...

The mouse probably must support the Microsoft mouse interface for transmitting data packets to the serial port. The Microsoft Booster mouse is a bus mouse, so it will not work. So to use a Compact Printer, you need a serial switchbox. and the appropriate pin converters (BERG to D-Shell for the syste...

Does ColorPaint work with anything other than a serial mouse? A joystick perhaps? The Microsoft Booster sidecar mouse? If not, I don't see how you could use the mouse and print from the Compact Printer, at the same time?

Personal Deskmate 2 will show an ungarbled mouse cursor, but it also displays ddoouubbllee cchhaarraacctteerrss with the PCjr. keyboard, making it rather less than usable. I had no luck playing music through the music program, but I only tried it for a second.

I tried my serial mouse with the PCjr.'s serial port, and the program did not boot :( I think the problem may be an conflict between the PCjr. BIOS and the ColorPaint program. I am thinking that, based on the information in this thread, it may be better to work ColorPaint into a DOS 2.1 boot disk : ...

I think this may be a case where only Tandy's mouse drivers will work. I know of a mouse driver for their DigiMouse boards and their Joystick-Mouse driver. The Joystick-Mouse driver only works in Tandy 1000s, probably because the underlying joystick hardware is different from the PC and PCjr. Would...