stanmarsh14, on 04 August 2010 - 08:25 PM, said:
Pic of my cart.
Two things I have noticed, is that A, my rom sits in IC3 NOT IC1, and B, chip number is 27C512-15 and a bunch of other stuff, but from what I remember disco-john telling me, is that you need a 27C512-15, and not a 27C64Q, which makes me think you have a different chip there.
Chip numbers as I see them in the attached pic....
1. 27c512-15 8923 HFC PGM@12.5v (Guessing this puppy is a 12.5 volt)
2. A880440 (M492, so I guess this is the CHR?)
3. SN74LS1ON RQRS8809 (Poss Motorola)
4. SP8812 / DM74LS245N
5. SP8812 DM74LSOON
I think you're right. I think I'm using the wrong chips.
I can burn them and verify them, but the machine doesn't see them.
I think I'll try some different eproms and go from there. I have the M492 so that must be right.
One thing, I didn't think I could use a chip as large as a 512k, but if that's what you're using then it must be OK?
I think it's just a case of persevering. I'll keep trying.
Paul
My Collection...
http://www.fruitemu....g2_itemId=24335
Last addition 3 August 2010 - added Silver Shadow.
Currently looking for the following MPU4 machines;
Supa Slot, Flash Cash, Bank A Note, Swap A Note, Loads A Money, Cash Matrix, Cash Connect, Black Jack (AWP)