486 upgrade boards - test-drb@ccmp.vtda.org

5 Mar 1998

Last I heard, Evergreen was still selling 386-486 upgrade chips, which
are
really quick. US$20 each, IIRC

manney(a)lrbcg.com

 "Chicken Little was right!"

...
   Does anyone
have any upgrade board for PCs? I said 486, but I mean
 any such thing. This is part of a desire to find a way to salvage some
 systems. Does anyone have any MCA upgrade boards? There are some PS/2
 286 towers, which I would take if I could upgrade them to something
 32-bit  
 For various reasons, mostly related to the '100% documented PC', I have a 
...
  little kludge-board in an original AT motherboard in
this PC. It's called 
...
  (IIRC) a 'Make-It 486', and contains a TI
486-a-like, the floating point 
 copro, and a couple of PLD chips. 

 I've also got a similar 386 board that I found at a radio rally. It's 
 labelled 'Hyper386-SX 50/60/AT'. It contains an Intel 80386SX-16 + 3 
 PAL-like things. From the name, I'd assume it would work in a PS/2 model 
 50 or model 60.

 I've no idea where you'd find one, but they certainly exist. 

 -tony 