Subj : Re: The XT that became a 486
To   : hyjinx
From : kirkspragg
Date : Mon Sep 22 2025 01:00:23

 hy>  ki> Is the processor on the piggyback board socketed or not? If it is I w
 hy>  ki> you could replace it with......
 hy> 
 hy> Yes, the CPU is socketed. I don't think there is much more performance to
 hy> get, regardless of the CPU - this is because of the 8 bit bus on the IBM
 hy> motherboard.

I largely agree, though if you could use something with more internal cache that whatever the current CPU has, it could make up for the bus at least a little....... if it works with that board.... and the board supports whatever voltage it needs.... I doubt that this will make much difference though.

 hy> Looks like you already understand the above issue. If I changed the DMA
 hy> controller and other support chips on the IBM 5160 mainboard, I could
 hy> likely get the ISA bust to at least 8MHz. I did so on my 

Oh seems your last sentence was cut off :(

Upgrading all the chips on your 5160 sounds like quite the commitment! Are they mostly socketed or are we talking desoldering with a re-work soldering station here.

.... Jesus Saves - and Dalglish scores from the next attack!

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