4 May
2015
4 May
'15
6:41 p.m.
On 05/04/2015 12:54 PM, Noel Chiappa wrote:
Yes, some
models of the PDP-11 do not handle DMA requests
when halted. I'm pretty sure the 11/45 does.
And, I'm pretty sure the 11/05 does NOT, as I recall not
being able to perform disk requests directly from the console,
but had to write a short program that went into an infinite
loop after commanding the controller card to perform a transfer.
Jon
From: Seth
Morabito
Well now I have egg on my face...
Don't worry, you're not the only one... :-)
No, actually it DOES work.
Wow. Live and learn.
Or maybe actually DMA indeed _doesn't_ work with the CPU stopped