another card idea

I think i've figured out a way to get everything to fit into a 6 slot cage.
Using PLCC processors, I think you could fit everything that was on the CPU
EPROM and Speech boards onto one card that would replace the CPU board.

That way, you would have a CPU, XY timing, XY control and the three sound
boards, and could bank switch the speech board code. Analog mux the four
sound sources together on the new CPU board, and bring out three decoded
card selects onto the backplane onto unused pins to select which sound
board to use. It looks like there is a single point on all the sound cards
which you could use for board select (u35-6 on space fury, u59-8 on the
universal, and u40-8 on eliminator)

Do any of the games use the Votrax or the timer stuff shown on the 800-0183
version in the Space Fury manual? It looks like none of that circuitry is
even stuffed on the other variants (I also see there are a bunch more I/O
addresses that I need to document)

..oh, and it would be cool if we could have a serial interface and RAM, and
a 50 pin connector to get to the adr and data bus and...

Maybe we don't need a DSP after all :-)
Received on Sat May 3 07:29:41 1997