Mike's PCjr Page

Some success today -- I installed the PCjr Sprint and Tandy mods from Chuckphd53. Luckily no damage to the case upon disassembly. Now I need to find switches and cables to run enable/disable outside the case.

True. Back in the day I did no more to my jr than add memory and speech sidecars. Then I moved on to the Atari ST and Amiga. Later I gave in and got back on the PC route, building my own machines from XT-class through P4--lots of fun with IRQ hell and DLL hell, but not the same as the idiosyncrasies...

Update: PCjr seems to be error-free. I could not find diagnostics/ram test that would run in 128K (other than the built-in). Google searches show me others looking for the same thing and finding nothing as well. However, I've been putting it through its paces including the floppy drive and now it se...

Wow, thanks! This was my "bible" as a kid learning how to code in BASIC.

Thank you for your response. Keyboard: I'm using the factory cord. Started with the second revision keyboard. Replaced it with a NOS Chiclet keyboard (same cable). Regarding jrIDE attached/detached: Whatever is happening, I can reproduce it; attached = the programs I tested work; detached = failures...

I pulled my 2nd jr out of the closet to play around with. I have found at least 3 problems and I have solutions/workarounds for them, I think. Then I have another problem for which I could use some advice. 1) Problem 1: Wouldn't read from disks reliably. Cleaned drive heads and lubricated rail. Now ...

Definitely interested in the Tandy Mod and other new toys.

I am interested in a kit plus an 8284.

Not me!

Asked the Vendor about this unit, here is the response.. The converter is designed specially for the standard CGA type RGB signal. The RGB output from the source device must be either 15.62KHz(Hf) / 50Hz(Vf), OR, 15.73KHz(Hf) / 60Hz(Vf), so the converter can work properly. If compatible, you may us...