a51site4a: MAME ROM Information.
MAME XML Output:
   | <game name="a51site4a" sourcefile="mediagx.c" cloneof="a51site4" romof="a51site4"> |
   |    | <description>Area 51: Site 4 (September 11, 1998)</description> |
   |    | <year>1998</year> |
   |    | <manufacturer>Atari Games</manufacturer> |
   |    | <biosset name="new" description="v1.0h" default="yes"/> |
   |    | <biosset name="old" description="v1.0f"/> |
   |    | <rom name="a51s4_bios_09-15-98.u1" merge="a51s4_bios_09-15-98.u1" bios="new" size="262144" crc="f8cd6a6b" sha1="75f851ae21517b729a5596ce5e042ebfaac51778" region="bios" offset="0"/> |
   |    | <rom name="a51s4_bios_07-11-98.u1" merge="a51s4_bios_07-11-98.u1" bios="old" size="262144" crc="5ee189cc" sha1="0b0d9321a4c59b1deea6854923e655a4d8c4fcfe" region="bios" offset="0"/> |
   |    | <rom name="cga.chr" merge="cga.chr" size="4096" crc="42009069" sha1="ed08559ce2d7f97f68b9f540bddad5b6295294dd" region="gfx1" offset="0"/> |
   |    | <disk name="a51site4a" sha1="4de421e4d1708ecbdfb50730000814a1ea36a044" region="drive_0" index="0" writable="yes"/> |
   |    | <chip type="cpu" tag="maincpu" name="MEDIAGX" clock="166000000"/> |
   |    | <chip type="audio" tag="lspeaker" name="Speaker"/> |
   |    | <chip type="audio" tag="rspeaker" name="Speaker"/> |
   |    | <chip type="audio" tag="dac1" name="DMA-driven DAC"/> |
   |    | <chip type="audio" tag="dac2" name="DMA-driven DAC"/> |
   |    | <display tag="screen" type="raster" rotate="0" width="640" height="240" refresh="60.000000" pixclock="18432000" htotal="640" hbend="0" hbstart="640" vtotal="480" vbend="0" vbstart="240" /> |
   |    | <sound channels="2"/> |
   |    | <input players="3" buttons="9" coins="4" service="yes"> |
   |    |    | <control type="joy" ways="5 (half8)"/> |
   |    | </input> |
   |    | <driver status="preliminary" emulation="preliminary" color="good" sound="good" graphic="good" savestate="unsupported" palettesize="256"/> |
   |    | <slot name="drive_0"> |
   |    |    | <slotoption name="hdd" devname="hdd" default="yes"/> |
   |    | </slot> |
   |    | <slot name="drive_1"> |
   |    |    | <slotoption name="hdd" devname="hdd"/> |
   |    | </slot> |
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