Guy Sotomayor Jr
ggs at shiresoft.com
Sun Jan 21 14:48:17 CST 2018
> 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
> 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
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