(Topic ID: 169522)

WPC EPROM & ROM File sizes

By ForceFlow

7 years ago


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  • 30 posts
  • 12 Pinsiders participating
  • Latest reply 5 years ago by barakandl
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    #1 7 years ago

    On WPC-89 and WPC-95 games, when using an EPROM that is larger than the ROM file for the game or sound ROMs, does the ROM image need to be "doubled up" like on older game systems?

    For example, if I have a 128KB file and have a 1MB 27c080 EPROM, would I just burn the 128KB ROM file as-is, or would it have to be doubled up 8 times to fill the whole EPROM?

    #7 7 years ago
    Quoted from zacaj:

    Can't hurt, though technically the CPU should always be keeping those lines low? Just don't burn a 1MB image to a 512KB rom like the guy who sold me his Black Rose did. Took me forever to figure out...

    Quoted from Brtlkat:

    A 27c080 is an 8MB chip.

    MB=MegaByte
    Mb=Megabit

    It can be confusing I usually have to double check when something uses bits and bytes are both used on the same thing.

    #9 7 years ago
    Quoted from Coyote:

    I'm..honestly not even sure you can do that. Be curious to see what other say.

    Yeah, I wasn't able to find anything explicitly written about it for WPC, which is why I'm asking.

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