Thanks for the additional details. One question:
>
36 M7911 Q TMB11 TAPE CONTROL 1
> 37 M7912 H TMB11 TAPE CONTROL 1 Hex
I looked these two up and it looks like they're both tape controllers.
Is that right? Why TWO controllers?
It's not two controllers. It's two parts of *one* controller.
OK then why are both "Control 1"? They both sound like the first card of a
set.
Joe