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/* TODO: understand the proper ROM loading.*/
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static ADDRESS_MAP_START( pcat_map, AS_PROGRAM, 32, pcat_dyn_state )
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AM_RANGE(0x00000000, 0x0009ffff) AM_RAM
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AM_RANGE(0x000a0000, 0x000bffff) AM_RAM
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AM_RANGE(0x000c0000, 0x000c7fff) AM_ROM AM_REGION("video_bios", 0)