13 Jan
2013
13 Jan
'13
1:11 p.m.
On 01/13/2013 04:03 PM, Josh Dersch wrote:
I have a set of Matrox QRGB-GRAPH (and QVAF-512)
boards (Q-Bus color
graphics for the PDP-11) which I have yet to play with. I don't think
it'd be a good candidate for anything that requires rapid full-screen
updates, though -- in particular there's no facility for blitting a
graphics region from the -11 to the graphics memory (everything is
drawn on a pixel-by-pixel basis through a set of registers).
That sounds like serious fun anyway!
Were
there any PDP-11 graphics systems that actually had a memory-mapped
framebuffer?
Yes, the AED 512 and 767 have a Qbus interface that (I believe) uses
DMA, in addition to the standard RS232 port.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA