Search found 181 matches

by chuckphd53
Sat Jan 22, 2022 4:11 pm
Forum: IBM PCjr Talk ⌨️
Topic: system goes bonkers during autoexec
Replies: 8
Views: 4823

Re: system goes bonkers during autoexec

My first thought was the same as Rlumpy, try removing thr LPT side cars and putting the JRIDE directly next to the Jr case. let us know what happens then at boot up... Chuck Edit: I noticed you said in your last comment you put everthing back and it was still bad, what was the hardware config? Still...
by chuckphd53
Thu Dec 30, 2021 9:09 am
Forum: Sell / Buy / Trade / Free
Topic: WTB PCjr Case
Replies: 1
Views: 3199

Re: WTB PCjr Case

Just saw a printer and PCJR (in case) full unit for sale on EBAY $5 $80 shipping :( but it does have the printer and they are nice if you do not have one. they clean up very well, I picked a used one up ( see my pics somewhere here :) ) after some TLC it Looks and works like new..... Was surprised t...
by chuckphd53
Mon Nov 22, 2021 11:47 am
Forum: IBM PC Talk 🌎
Topic: 8087 Math Processor
Replies: 3
Views: 5945

Re: 8087 Math Processor

Adrians Basement has a great episode fixing a 5160 IBM PC ROM issue...
Pretty good...
by chuckphd53
Tue Nov 16, 2021 4:16 am
Forum: IBM PCjr Talk ⌨️
Topic: Floppy disk head alignment
Replies: 12
Views: 6082

Re: Floppy disk head alignment

Great job, congrats!

And I have yet to complete a level of Kings Quest...:)
by chuckphd53
Fri Nov 12, 2021 5:15 pm
Forum: IBM PCjr Talk ⌨️
Topic: Floppy disk head alignment
Replies: 12
Views: 6082

Re: Floppy disk head alignment

The trimpot may be a bias adj for the write head function.... Does anyone have the schematics for the disk drive ? It sounds like there is a bad chip driving the stepper head motor.... I would find the stepper motor cable and use some cleaner and reseat it a few times... just incase there is some ox...
by chuckphd53
Fri Nov 12, 2021 7:30 am
Forum: IBM PCjr Talk ⌨️
Topic: Floppy disk head alignment
Replies: 12
Views: 6082

Re: Floppy disk head alignment

Is this a PCjr original Drive ? Not an easy path, but you may need to write your own program, using the FD INT routines to control the drive.. this would not be hard program to write, and there are lot's of folks with experience in this, may need to find time. but it can be done... This is a good to...
by chuckphd53
Wed Nov 10, 2021 2:50 pm
Forum: IBM PCjr Talk ⌨️
Topic: Floppy disk head alignment
Replies: 12
Views: 6082

Re: Floppy disk head alignment

Found this ..
Looks like Version3 may have floppy alignment stuff.


https://winworldpc.com/product/checkit/30
by chuckphd53
Wed Nov 10, 2021 6:21 am
Forum: IBM PCjr Talk ⌨️
Topic: Floppy disk head alignment
Replies: 12
Views: 6082

Re: Floppy disk head alignment

Got it, I will look around, but I have not heard of a program specifically for the Jr, so maybe an alternate DOS 4.0 or ealier style program may be out there..
by chuckphd53
Wed Nov 10, 2021 2:01 am
Forum: IBM PCjr Talk ⌨️
Topic: Floppy disk head alignment
Replies: 12
Views: 6082

Re: Floppy disk head alignment

Vic...

Suggestion, On Youtube, Adrians Basement:
He has a couple videos on how to align the heads on drives.
Maybe take a look..

Chuck
by chuckphd53
Sat Oct 30, 2021 3:19 pm
Forum: IBM PCjr Talk ⌨️
Topic: Jingle Disk ThoughtWare Softare
Replies: 2
Views: 4446

Re: Jingle Disk ThoughtWare Softare

Christmas is here again and my Jingle Disk will soon be playing again !
by chuckphd53
Sun Oct 24, 2021 7:48 am
Forum: IBM PCjr Talk ⌨️
Topic: Out for a few days.....
Replies: 4
Views: 4252

Re: Out for a few days.....

Yea it was a pain in the side. literally for about 8 yrs. Got to big and had to go.... But I feel great, and the side pain is gone.... I suppose in the old days you just lay around in pain until it poisened your whole body and the died.. So thank God for modern medicine and skilled surgeons ! I am g...
by chuckphd53
Wed Oct 20, 2021 2:47 pm
Forum: Design Ideas 💡
Topic: ADLIB/MPU-401 Expansion bay
Replies: 7
Views: 7510

Re: ADLIB/MPU-401 Expansion bay

Wht happend to this Idea ???
by chuckphd53
Thu Oct 14, 2021 6:37 pm
Forum: IBM PCjr Talk ⌨️
Topic: pcsprint and tandymod installed!
Replies: 2
Views: 3600

Re: pcsprint and tandymod installed!

great, besure to run a switch the the outside of the case so you can turn it ON and OFF as needed....

ps : your motherboard looks really clean,,,
by chuckphd53
Thu Oct 14, 2021 6:35 pm
Forum: IBM PCjr Talk ⌨️
Topic: tandymod test games?
Replies: 5
Views: 4556

Re: tandymod test games?

Actually I thin JrCharles (member) wrote it.... butgreat it is working fine
by chuckphd53
Thu Oct 14, 2021 6:10 am
Forum: IBM PCjr Talk ⌨️
Topic: tandymod test games?
Replies: 5
Views: 4556

Re: tandymod test games?

Kings Quest is one that I used to test the Tandymod
by chuckphd53
Tue Oct 05, 2021 6:43 pm
Forum: Sell / Buy / Trade / Free
Topic: PCjr Software Trade
Replies: 17
Views: 16157

Re: PCjr Software Trade

I have two standard 'big brother' machines IBMXT I was wondering if this would work,,,
by chuckphd53
Tue Oct 05, 2021 6:18 am
Forum: Sell / Buy / Trade / Free
Topic: PCjr Software Trade
Replies: 17
Views: 16157

Re: PCjr Software Trade

Is the Fixed disk organizer for the Jr or Standard IBM
by chuckphd53
Mon Oct 04, 2021 8:18 am
Forum: IBM PCjr Talk ⌨️
Topic: Out for a few days.....
Replies: 4
Views: 4252

Out for a few days.....

I have been away from here for a few days. Tuesday last week had to go to the ER for what turned out to be a gallbladder STONE, it has been lingering for years since I had my Gallbladder out, and finally got to 10mm HUGE and was causing pancreatitis , needless to say I was in alot of pain... 1-10 it...
by chuckphd53
Sun Sep 26, 2021 10:49 am
Forum: IBM PCjr Talk ⌨️
Topic: 720K floppy
Replies: 21
Views: 11515

Re: 720K floppy

Just a suggestion, if you have time and do a FULL write up intensive step by step HOW TO...

That would be great I can put it on the Front page as source material for the folks...

I even have to revisit the steps, since I dont live this ever day :)
by chuckphd53
Fri Sep 17, 2021 9:21 pm
Forum: Sell / Buy / Trade / Free
Topic: IBM MODEL F keyboard
Replies: 2
Views: 6754

Re: IBM MODEL F keyboard

Hey, actually I found a guy that had his dads stuff so was able to pick up a few parts..'
got lucky>..