9 Nov
2010
9 Nov
'10
10:18 a.m.
In article <4CD908B4.32181.631DD7 at cclist.sydex.com>,
"Chuck Guzis" <cclist at sydex.com> writes:
In the traditional scheme of things, only two PPUs had
dedicated
functions; PP0 served as the timekeeper and observed the state of the
CPU (PPUs could also read the CPU P-counter) and was delegated the
function of interrupting the CPU. PP1 (this could vary a bit) served
to provide operator console display--the original display was an
unbuffered vector-mode display and so needed to be continuously
refreshed.
I have one of these displays, a CC545:
<http://www.cray-cyber.org/pictures/cc545.php>
<http://static.cray-cyber.org/Documentation/CC545/>
I need to figure out how to cobble together a PPU and suitable driver
circuitry in order to fake out the back end of the machine. Ideally
I'd like to interface this to the CDC emulators out there.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/>
Legalize Adulthood! <http://legalizeadulthood.wordpress.com>