10 Nov
2010
10 Nov
'10
5:50 p.m.
Date: Wed, 10 Nov 2010 09:58:23 -0800
From: "Chuck Guzis" <cclist at sydex.com>
Subject: Re: CDC 6000/7000 operation, was: Virtual memory
On 9 Nov 2010 at 23:53, Richard wrote:
What you're calling the display controller I was
lumping into the PPU.
The project ends up being the same scope -- you need to drive the
display and there's not much in the display itself.
Yup, the 6612 display controller occupied an entire chassis (chassis
12) in the 6600. It basically provided character generation and
positioning control for the DD60. At first blush, the DD60 interface
looks to be the same as that of your unit.
I couldn't find a logic diagram for the 6612 (or 6602) on bitsavers,
but I did find the programming reference manual, which might provide
some hints:
*/pdf/cdc/cyber/peripheralCtlr/60333900B_6602_6612_Console_Display_Sep
74.pdf
* = insert your favorite bitsavers mirror.
--Chuck
++++++++++++++++++++++++++++
I scrapped a CDC display controller many years ago and probably still have
some cards out of it (made a nice solid desk as well); doesn't quite look
like the picture although the keyboard sure looks familiar. Had a large
diode matrix 'PROM' PCB IIRC.
I'll check the model number when I'm back home again in case there's
anything useful.
mike