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Re: RAM editing, Is this possible in MAME (and if so, how?)
04/25/22 07:08 PM
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> When I go to edit, I get it overwritten too. Bummer. Anyone know how to get around
> this?
The values probably get overwritten because the game mirrors them in main RAM.
One easy way to get around this problem is to open nvram/ccastles/nvram_4b outside MAME in a hex editor, since X2212 has nonvolatile backup for its own SRAM. Editing it is not so simple: the game code stores three copies of the same data, with simple XOR modifications, to check its integrity. Also keep in mind that this memory type is only 4 bits wide; in this case, the high nibbles are in 4A and the low nibbles are in 4B.
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Re: RAM editing, Is this possible in MAME (and if so, how?)
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