Mike's PCjr Page

Welcome!

Kudos! Good job.

Just a note of caution... I know it's popular to replace electrolytic capacitors with tantalum caps on motherboards, (and in many cases that is definitely appropriate and OK), however in the case of your monitor I wouldn't do any such substitution. Tantalum caps can fail in dramatic ways, and they a...

Kudos! I've poured over a good portion of the BIOS code too and never found this. Pretty cool!

I've got one of the 3 button "normal" connector (as in can work on the regular PCs) and it's pretty nice. Otherwise identical except there's an AC adapter to power it.

Hey Mike:

Perusing through your pics I saw your TRS-80 Model I running some TCP/IP software. What are you using for that and what hardware? I'd like to do something like this on a Coleco ADAM (Z80 based also).

True, but also recall that this was at a time when a BASIC machine was "all the rage." There was seemingly a belief in the industry that BASIC was all you needed, and a Casette port for some cheap external storage for the BASIC programs you typed in or created yourself. Now, granted a PCjr...

The Tandy version located there does not support Tandy modes: This driver is for the Tandy 1000 graphics adapter. It provides two colors at a resolution of 640H x 200V pixels. It does support hi-res modes on the Tandy 2000 though, which is very cool. Huh... is the Tandy 2000 graphics hardware the s...

Plus, you wouldn't have an ethernet cable coming out the front of the unit.

I'm sure an enterprising individual could write a device driver to support the VDI for the PCjr if so inclined. No, I have no desire.