Re: Converting Star Castle to Armor Attack

Ay...I mean game ROMS, not PROMS...sorry about the confusion there...the
PROMS are for vector drawing information that's universal between all Cine
games...again, sorry about that misinformation. The game ROMS though may
have some differences. I remember reading in Zonn's document that some
ROMs may have inverted outputs or the address bus of some ROMs may expect
the address to be inverted?...Oh, some of the other proms on the CCPU are
used for the control unit of the CPU.

As for other issues...
I think the mod that is necessary is for intensity. Isn't Star Castle
something like 16 levels of vector intenstiy while Armor Attack is 64?

Ed

On Mon, 13 Sep 1999 jwelser@ccwf.cc.utexas.edu wrote:

> On Mon, 13 Sep 1999, Matt Rossiter - Verio Southern California wrote:
>
> > One more quick question....
> >
> > How hard is it to take a CPU board out of a Star Castle and turn it into
> > and Armor Attack? Is it just a matter of changing the 4 roms or do you
> > have to change the custom proms as well?
>
> No, you don't need to change the PROMS. These are essentially
> microcode PROMS which are the same for all B/W Cinematronics games.
>
> There IS the issue of the slightly different memory map (or,
> rather, expanded memory of Armor Attack.) Armor Attack/Solar Quest use
> more memory than Star Castle/Rip Off.
>
> I've never made this mod., but I remember Zonn and Paul K. talking
> about it from time to time. My recollection also tells me that it's
> pretty easy to mod the SC/RO board to run AA/SQ. I think it involved
> using one of the spare gates already on the board.
>
> Hopefully Zonn or Paul K. will jump in here and explain the rest
> ;)
>
> Joe
>
>
Received on Mon Sep 13 12:45:44 1999