Hi
I have a Scramble bootleg, I didn't find any differences from the Stern schematic, it looks the same.
The game is working almost perfectly, but in two player upright, the controls changes from 1P input to 2P input, as if it is in cocktail mode.
In cocktail mode it works as intended, video is flipped and input flipping side too.
The 1P and 2P input is selected by the 8255 position 1E, the port is selected by AB0 and AB1 from main Z80 processor.
I tried to swap the 8255, but no luck.
I checked the Eproms at the mainboard, and repaced the program in the first three eproms(1-3), because it was not in mame, I replaced the romset with the Scramblebb set, because rom 4 - 10 was from this set. But still no luck.
Anybody can check if this is normal?
Rgds
Henrik
I have a Scramble bootleg, I didn't find any differences from the Stern schematic, it looks the same.
The game is working almost perfectly, but in two player upright, the controls changes from 1P input to 2P input, as if it is in cocktail mode.
In cocktail mode it works as intended, video is flipped and input flipping side too.
The 1P and 2P input is selected by the 8255 position 1E, the port is selected by AB0 and AB1 from main Z80 processor.
I tried to swap the 8255, but no luck.
I checked the Eproms at the mainboard, and repaced the program in the first three eproms(1-3), because it was not in mame, I replaced the romset with the Scramblebb set, because rom 4 - 10 was from this set. But still no luck.
Anybody can check if this is normal?
Rgds
Henrik
