PCjr (Was Re: IBM PC hacking)

Fri Sep 30 22:55:07 CDT 2005

On 9/30/2005 at 11:51 PM ard at p850ug1.demon.co.uk wrote:

>IIRC, the TechRef for the 10MByte controller contains a schematic with 3 
>chips simply labelled LSI A, LSI B and LSI C. It was fairly obvious from 
>the piuout that one of this was nothing other than a Z80 processor. I 
>think one of the others was something standard too.

Probably so, but I never substituted a "stock" Z80 to see if there was something different about the IBM version.  OTOH, the "clone" controllers like Xebec certainly used the Z80.

Cheers,
Chuck