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Currently trying to fix an Operation Wolf 3 boardset. The mask ROM for the sound samples is partly corrupt.
This is a 42-pin mask ROM. Marked under the socket for it is:
2316000/32000
From my investigations I thought that the equivalent for this is a 27C322 EPROM, but on programming up a suitable EPROM with the data and plugging it in, the sound samples are then a mass of crackles (at least they mostly worked with the partly corrupt mask ROM).
Under MAME, the filename for the required file is: d74_01.37
http://maws.mameworld.info/maws/romset/opwolf3
27C322 datasheet:
http://arcarc.xmission.com/Tech/Datasheets/27C322.pdf
Am I using the wrong EPROM type?
Thanks
This is a 42-pin mask ROM. Marked under the socket for it is:
2316000/32000
From my investigations I thought that the equivalent for this is a 27C322 EPROM, but on programming up a suitable EPROM with the data and plugging it in, the sound samples are then a mass of crackles (at least they mostly worked with the partly corrupt mask ROM).
Under MAME, the filename for the required file is: d74_01.37
http://maws.mameworld.info/maws/romset/opwolf3
27C322 datasheet:
http://arcarc.xmission.com/Tech/Datasheets/27C322.pdf
Am I using the wrong EPROM type?
Thanks
Last edited:

