IBM PCjr

I believe the -10 is the right one.. but the 5 should work with the onboard MB crystal.... 4.77MHz run freq. is derived from the 14.31818 MHz crystal.. so the -5 should handle this and you will see the advantage of the V20 architecture for speed... but I believe most folks like the -10 to give a lit...

The NEC V20 -10 chips are good

they give an instant increase in speed.... more they do not fool with the system clock timing and this is important
for the Joystick timing for games...

Others that have used it hopefully will weigh in...

I sounds like the system thinks it has Two drives, this is why it asked for drive B:.
maybe your config.sys is set up for two drives..

are you using the original Jr Floppy controller ?

Jiidari.. you mentioned you had an external floppy, what failed ??? here is the External Floppy Mod I did back in the 80's Still have the case and power supply but not using it... YET ! https://www.pcjribm.com/pcjrfiles/FloppyMod.jpg https://www.pcjribm.com/pcjrfiles/Home_Computer_Magazine_Floppy_Mo...

These are good ideas,,,, May have to consider designing some of these things.. I have been a big fan of the Data/Address LED;s as used on the Imsai S-100 systems. I built an S-100 system in the late 70's, and have always wanted to outfit the Jr with Latched Address and Data LEDS just for that 'WAR G...

Couple of thought's here... The JRIDE and RACORE/RAPPORT memories will most likely conflict... My thoughts here are: I have both a Racore and Rapport system, and I preferred to keep these systems 'original'. I also have My COLOR system that is still a work inprogress, but this will be a FUN system t...

I have a Jr -> PS2 keyboard adapter that may work.

I am not sure but it sounds like the game may be looking for 'different' key codes from the keyboard interrupt instead of bios in some manner..
if you switch to a PS2 type keyboard, maybe ??? it might work !

just a guess....

thoughts'

Sent: 23 Feb 2021 23:50 From: RiverBoa99 Chuck, Any idea how to resolve keyboard issues? I've got a few games that just screech beep at me when I hit the keyboard, although the mouse works just fine. This is in CGA or Tandy-16 mode. I've heard there was a program to resolve the issue, and it helped...

WOW.... ( psergiu ) I just noticed you had a COCO listed in your computer list... Had a friend lived across the street from me in 85 when I had my first Jr, bought new at Computerland in Houston, Tx. If I remember correctly the COCO and Commodore 64 was the biggies for the BBS crowd..... I had my BB...

Here is what I have on hand... Note the Rapport below is very similar to the Racore so it may apply. https://www.pcjribm.com/pcjrfiles/Racore_ocr.pdf https://www.pcjribm.com/pcjrfiles/Rapport_Drive_2_Model_1200_Installation.pdf https://www.pcjribm.com/pcjrfiles/Rapport_Drive_2_Model_1200_Software.pd...

The Sprint Board is a nice addition speeds up basic functions. but it can screw up game playing, Joystick timing etc..... but there is a switch to Turn in ON and OFF as needed.. My 3tier systems and the buttons on the front are: RESET (sprint board) TANDY (Tandy Mod ON/OFF) SPRINT (sprint ON/OFF)

Anyone know a good source, besides Ebay...

Looking for a good version of the 8088 type Macro Assembler, IBM or Microsoft.. I think I have a version on some disks somewhere, but would like to get the full Binder edition, with manuals and working disks if possible. Saw a few on Ebay, but seemed kinda expensive, maybe not, just started looking....

Have to admit, been long time since I used Choice, and never thought to,use it on the Jr.
Had to revisit the little program just to remember how it worked.
I have not used alot of batch commands but
It would be nice to have an alternative...

WOW, just picked up a NEW in Box IBM 5153 color monitor, never used... $350
and best part it was Local so not worried about shipper damage...
Been looking for at least 3 yrs, this was a gem of a find.....
Will take,pics when I get it.

Just picked up a Model F (clickety) keyboard for my 5160.
It was almost new in box and I did pay a good price for it.
Since it was almost new the price did not hurt so bad

Will post some pics when I get it..

I know there was some educational software that the Speech side car used. But was there any other games/business software that was used ? seems like the speech would have been a BIG deal for the Jr. but maybe the price tag kept if from kicking off, or also the fact that the Jr Died a sudden death......

Thanks Ken...

I have line on one right now. hoping the price is ok
will get back to you if that does not work out...

thanks
Chuck

Have seen a few on ebay, but thought I'd ask if anyone had picked up a Jr Pwr Expansion unit..

Just wanting to pick one up for the Jr Collection.
Hoping someone had a few they picked up from Computer Reset in Dallas..

Let me know
Chuck

From my early years with the Jr My first remembering of the best time with the Jr was at Christmas when I could play the Jingle Disk. It was hard not to sit and watch it over and over and over... My son now 34, was only a little guy of 2 and he would sit and watch in amazement along with dad ! Was t...