22 Feb
2017
22 Feb
'17
2:51 p.m.
On Feb 22, 2017, at 2:18 PM, allison <ajp166 at
verizon.net> wrote:
At my alma mater, the physics department had an 11/20 with AD01 and AA11 analog I/O, as
well as DR11-A digital I/O and KW11-P programmable clock. Originally that system ran DOS
(8 kW, RC-11 system disk). One of the professors had extended DEC BASIC to drive those
peripherals. For an honors project, I did the same and more with RT BASIC. Among other
things, you could write interrupt handlers in BASIC to respond to digital inputs or clock
signals.
I also wrote a crude CRT display program by sending X/Y pairs to the AD01 and then to the
X and Y inputs of a scope. Refresh memory was on the RC11, using bus address increment to
DMA directly from disk to AD01.
paul
...
The AAV11-C is an analog output board
and I know of no code for it as it was usually part of a user application.
Same for its complementing Analog input board ADV-11 M8000 and in systemss ussually
appered with M6010
digital output card, IBV-11 M7954 instrument bus interface. See MINC-11 systems for
more.