Re: Space Invaders Deluxe pcb issue

Travis Shire wrote:
>
>
> *From:* Travis Shire <mailto:tshire@charter.net>
> *Sent:* Monday, September 10, 2012 7:48 PM
> *To:* rasterlist@vectorlist.org <mailto:rasterlist@vectorlist.org>
> *Subject:* Re: RASTER: Space Invaders Deluxe pcb issue
>
>
>
> *From:* John Robertson <mailto:pinball@telus.net>
> *Sent:* Monday, September 10, 2012 6:33 PM
> *To:* rasterlist@vectorlist.org <mailto:rasterlist@vectorlist.org>
> *Subject:* Re: RASTER: Space Invaders Deluxe pcb issue
>
> Travis Shire wrote:
>> Working on a SID boardset that runs regular SI code just fine, but
>> won't run the Deluxe roms. I modded the board for the single rom
>> hack, and it still has the same symptom...which is being stuck at the
>> player/score info at the top of the screen. This redraws at about
>> 2-3hz rate and does nothing else. I'm thinking its gotta be something
>> to do with the sound board since SID code won't run using a regular
>> SI sound board. What's the mainboard looking for from the sound board
>> to run SID code?
> The sound board does more than sound...it also handles some of the
> video interface as I recall, so you have to use the SI2 daughter board
> for the game to work.
>
> John :-#)#
> --
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
> www.flippers.com
> "Old pinballers never die, they just flip out"
>
> Just for reference, I followed Mark Spaeth's method for doing the rom hack.
> http://cambridgearcade.dyndns.org/?q=node/72
> The instructions are a bit foggy in some areas....like the "S6" strapping section.
> I assume that you need to remove the little jumpers in the chip select section for the address lines,
> but why screw with that since we're no longer using any select lines?
> So the behavior I'm getting is with the CE line tied low (OE tied low as well).
Ah, I dunno - without the memory map of SID handy I can't say for sure
if that is correct. It should be - Mark knows his stuff, but you need to
be sure you aren't interfering with RAM or I/O mapped memory with this
single EPROM hack.

Did the board ever work correctly as a SID?

John :-#)#

-- 
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
                 www.flippers.com 
"Old pinballers never die, they just flip out"
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