Demolition Man
Williams, 1994
FunHouse
Williams, 1990
Machine: Bride of Pinbot, The
Williams, 1991You're currently viewing posts by Pinsider DumbAss.
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Quoted from barakandl:WMS schematic for the RAM chip shows JEDEC pin out. Actual PCB seems to have address bits re-arranged. Zaza's diagram looks like it is correct.
I can confirm this is correct. This is from the schematic for my reproduction board. It's identical to zaza's diagram.
wpc89_cpu_u8.jpgQuoted from barakandl:To the processor it does not care what order the address bits are laid out on the RAM.
I agree that this is true when in the same closed system. As long as the bits are accessed in a consistent manner it doesn't matter if it's A0 or A1 as long it's consistent.
Quoted from barakandl:I think something like that is going on otherwise the NVRAM should be able to move with the ROM to a new board and not get a restore factory settings.
Have you considered the language DIP settings? If you change those then you get a factory reset.
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Albany, NY