> On Sep 5, 2018, at 10:13 PM, Bob Supnik <b...@supnik.org> wrote:
>
> Apparently, the GT40 does this. So... problems.
FWIW, I've done this too, in college on our 11/20. That was for a primitive
CRT display (an X/Y scope attached to an AD11 (?) D/A converter) which had its
data fed to it by DMA from the RC11 system disk. It was set to write to the
D/A data register, with bus address increment inhibit set. Crude, but it
worked.
paul
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