Mike's PCjr Page

Other chips to consider would be Arduino and Picaxe. I'm not really a hardware guy either, but dabble a bit. The arduino has a free programming environment and lots of inexpensive clones out there. Code to decode the PS/2 keyboard is readily available. http://www.vintage-computer.com/vcforum/showth...

I don't know about the Adam. I asked him about a TRS-80 MIII or M4, he said no because only the MI outputs a memory control signals (for the VGA) and it depends on specific bytes in ROM for the autoboot. What intrigues me most, vis-à-vis PCjr's, is the Ethernet module: a WIZ830MJ (datasheet: http://...

Just for fun: http://i233.photobucket.com/albums/ee171/4-BarrelMike/Tandy%20stuff/Network01_zps62fd5961.jpg PCjr FTP connection to the (rudimentary) FTP server on my Mise http://home.comcast.net/~bartlett.p/MISE/index.html -equipped TRS-80 Model I in the background. http://i233.photobucket.com/album...

Update: I got the new ide adapter and it didn't work. I put everything aside until I had some time to play with it. After I ended up with the Racore unit, I got to wondering if the jride would work with the two-drive unit if I pulled the expansion memory board out of it. Eventually, I did and it doe...

We can dig a bit more with software; boot it to a floppy disk and I can give you some instructions to poke around in debug to see if we can poke a register or two. Hey mike brutman, what's the base address for the IO ports for the HDD we're using on the IDEjr? Sounds good! Appreciate all the help. ...

jmetal88: Thanks, that makes sense. I'll make sure that it's right. Hargle: Are we assuming that since it was working correctly that I assembled it correctly? Late last evening, I plugged the ide adapter into an xtide and it wasn't recognized (which may not mean anything). I've ordered a new one any...

DQ#1 :D Yep, on first, on second, on simultaneously. DQ#2 RTC is currently off,off,off (no IRQ selected I guess) which were it was when I first turned the jride on and it worked :shock: so it's still there (although I've tried the other settings); ROM is currently set for C800. I've tried the other ...

just to summarize this, please correct me if I'm wrong on any point: 1) you've tested the same IDEjr on 2 machines. 2) you've tested multiple working IDE drives- drives that work with the XTIDE and at least one that previously worked on the IDEjr. 3) all other components of the IDEjr (except the oc...

POST is normal and reliable. The jride BIOS output is as it always was except for the Drive 0:not installed. All pins on both jr's are straight and of correct height. Once again, using a bright light and magnifying glass, I made a slow inspection of each solder joint. I found no bridges or cold join...

Alan: Ah! I tried to put in all pertinent info and forgot: every reported test, except the known-good-to-xtide HD test, were conducted on two Jr's with the same results. POST, in every observation, was good. One time, out of 50?, jride (I think) gave me an "ERRORH"; a three-fingered salute...