10 Nov
2010
10 Nov
'10
9:58 a.m.
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