30 Sep
2005
30 Sep
'05
6:02 p.m.
On Fri, 30 Sep 2005 23:51:10 +0100 (BST)
ard at p850ug1.demon.co.uk (Tony Duell) wrote:
>
> The XT controllers were (the 10 MB controller was different from the
> 20MB one) a peculiar beast with a bunch of
proprietary LSI. When
the
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.
Is that the Xebec controller? (can't remember if that's who IBM got the
original controller for the XT from or not)
-tony