Subj : Re: The XT that became a 486
To   : hyjinx
From : kirkspragg
Date : Fri Sep 12 2025 17:41:32

 hy> Al's Geek Lab delivers you -- my IBM 5160, complete with original 256K
 hy> motherboard still in play, delivers you a slice of DooM running at
 hy> ~20FPS.
 hy> 
 hy> Yes, it is running with an upgrade card - an Intel Inboard/386 PC
 hy> Yes, I rodded the hell out of that too, with a ParrotyError 4MB ram
 hy> expansion piggyback board and an IODATA PK486 Blue Lightning 3
 hy> (IBM/Cyrix) CPU which clocks in at 96MHz!
 hy> 
 hy> It's wild!
Thats so cool, I wonder how much further you can push it!

Is the processor on the piggyback board socketed or not? If it is I wonder what you could replace it with......

 hy> 
 hy> Lettuce know what you think!
You've turned that 5160 in a real Rocket ;)

Also I wonder what performance would be like using a super XT motherboard that runs at a higher clock speed than the XT? Bumping the ISA bus speed up to 8 or 10Mhz would surely speed things up quite a bit!

.... A toast  --  To a kinder gentler echo

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