LSI-11/2 CPU with tracks cut?
sb at thebackend.de
Tue Apr 4 06:09:41 CDT 2006
Christian Corti schrieb:
> According to the "microcomputer processor handbook" (edition 1979-80)
> the backplane signal names for BC1 to BH1 are called SSPARE4 to SSPARE8
> (special spare) and are *not* bussed.
Yes but that apparently is only true for the very first machines using
QBUS i.e. with the LSI-11 CPU. The LSI-11 manual contains exactly the
> The KD11-HA signal names on these
> pins are:
> BC1 SCLK3H
> BD1 SWMIB18H
> BE1 SWMIB19H
> BF1 SWMIB20H
> BH1 SWMIB21H
Any idea how I can find out what those signals actually do?
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