Re: Space Invaders Deluxe pcb issue

From: Travis Shire
Sent: Monday, September 10, 2012 7:48 PM
To: rasterlist@vectorlist.org
Subject: Re: RASTER: Space Invaders Deluxe pcb issue

From: John Robertson
Sent: Monday, September 10, 2012 6:33 PM
To: 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/72The 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).
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