PCJr PC-Sprint / PCXT PC-Sprint

[Trixter]

I'm down for one for now, and maybe another one if I figure out how to assemble it properly :)

Regarding TOPBENCH: The Score is a synthetic number calculated from different benchmarks (memory, math, address calc, etc.) that illustrates the relative performance of one system to another in 16-bit real-mode DOS. (ie. it doesn't reflect performance improvements for protected-mode 32-bit processors, only 8086/80286/80386/80486/Pentium running in regular DOS.) Some numbers that might mean something:

PCjr stock 128KB: Score = 2
PCjr with a memory expansion and programs running out of the memory expansion: Score = 4 (same as an IBM PC)
PCjr + Sprint + NEC V20 CPU: Score = 8

So with the latter combination, your PCjr can operate at roughly twice the speed of a stock 4.77 MHz IBM PC. This speed upgrade can be immediately felt running games in regular CGA mode, and it can also make 320x200x16 games operate at a tolerable speed (as opposed to "nigh unplayable").

[Chuckphd53]

Jim,

not to worry I will build these and test before I send them out to the folks....
(NO SOLDER NEEDED )
But you will have to get the 8284 outta the JR mother board....
I can do a write up to help with that if needed.....it can be touchy if you are not so inclined to start cutting...

[monzamess]

I am also interested!

[Chuckphd53]

Looks like we have a nice group of folks that want this...
So I'll wait another few days and make sure I don't order short, give folks time to decide..

Thanks
Chuck

[pfleeman]

I would love to have 1 as well! I hope I’m not too late.

[Chuckphd53]

not to late,

[smitty]

Please consider me interested in ordering one as well if it's still not too late

[jharre]

Put me down for one, maybe two boards.

<*> Jim

[Chuckphd53]

Guys..... this is still on going,, decided to get a more boards done..
but I apologize, family issues have come up and I will be occupied for a few weeks....
but this is still a go.

Chuck

[James]

Please add me to the list