Re: Multigame idea #153263

On May 6, 3:08pm, Clay Cowgill wrote:
> Subject: Multigame idea #153263
> I was looking over the CPU/Speech boards last night thinking about how
> little I'd enjoy trying to recreate them in a new version, when another
> idea hit me...
>
> The CPU board is a likely candidate for the "host" board for a multi-game
> add-on. The idea here is to simply remove the security chip, remove the
> "boot" EPROM, and remove the Z-80....
>
> ...I can make a small daughtercard that plugs into the Z-80 socket. The
> daughtercard can have a single PAL, a 27C020 (256Kx8 EPROM), a 27C64 (8Kx8
> menu code), a Z-80, and a PIC. Probably some resistors and stuff too, but
> that's no big deal. Since the control inputs come in on the CPU board
> anyway, it makes the control input router (the PIC) a lot easier to deal
> with, and since the Z-80 has all the control signals that's pretty clean
> too.
>
> That's a lot smaller than a G-80 bus card which keeps the price down, and
> it saves us a slot since it'd get rid of the EPROM board.
>
> (There's really not any reason that it couldn't have the SRAM and serial
> ports for a development board either, but this might make for a good
> "multigame only" type of board.)
>
> Any thoughts?

Very minor note:

A daughter card for the CPU would make sense to me (In fact, that's how I
thought it would be done), but the additional room needed would mean that the
CPU card would have to be in the slot closest to the 10pin connector.

My small note is that some of the sound boards (Space Fury specifically) have
large capacitors on them that require them to be put in this slot. To move it
to another slot, you will have to modify the board (remove the capacitor and
mount another one differently).

As I said, it's a small note :-) But it DOES make it a &$%@ to test out these
sound boards, as the harness is usually in the way for any card in this slot...

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Mark Jenison E-mail address: jenison@cig.mot.com
Cellular Infrastructure Group Motorola--Arlington Heights, IL
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Received on Tue May 6 15:27:14 1997