21 Jan
2018
21 Jan
'18
12:48 p.m.
On Jan 21, 2018, at 11:47 AM, Al Kossow via cctalk
<cctalk at classiccmp.org> wrote:
HP1311A is what was used in Galaxy Game
https://www.hpmuseum.net/display_item.php?hw=732
The actual GG controller is a microcoded 2903 bitslice that sits on the Unibus
Supposed to be similar to the VT-48
Didn't James build something (FPGA based?) to play the game?
James may have done something on this. I?m not sure.
I do know that the CMU GDP did not have any VLSI (or LSI) in it. It was pretty straight
SSI and MSI TTL from what I can recall with a bunch of custom built DACs. The GDP
was connected to the UNIBUS but it was a separate box (1U/2U) from the 11/20.
TTFN - Guy
On 1/21/18 10:48 AM, Guy Sotomayor Jr wrote:
HP made some wonderful 17? and 19? electrostatic
deflection vector displays. We had a pile of them at
CMU driven by a custom GDP (some had 10-bit DACs, some had 12-bit DACs) that was
front-ended by
a PDP-11 (usually an 11/20). It was a *wonderful* combination!
TTFN - Guy