Greetings,
I'm trying to figure out how console I/O works with the PD11.
Or more generally I/O addressing
E.g.
A "sh TTO" gives :
TTO, address=17777564-17777567, vector=64, 7p
And 17777564 (octal) is 4,194,164 dec, which is obviously out of range
of the 64K addressable by any MOV instruction.
But various diagnostic routines, e.g. below, are using
movb rX,@#177566 ; output to console
https://www.ak6dn.com/PDP-11/M9312/23-248F1/23-248F1.mac
Are I/O devices always at the "top 64k" of memory ?
If so, why doesn't SH DEV display :
xxx xxx-177 777 ?
Mike
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