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desertgu: MAME ROM Information.


Desert Gun (c) 1977 Midway.

A first-person shoot'em up.


[Game No. 618]

Main CPU : 8080 (@ 1.9968 Mhz)

Sound Chips : Discrete circuitry

Screen orientation : Horizontal

Video resolution : 256 x 224 pixels

Screen refresh : 60.00 Hz

Palette colors : 2

Players : 1

Control : lightgun

Buttons : 1


Released in July 1977.

Desert Gun was originally named "Road Runner (Midway Mfg. Co. [USA])". The name was changed when Midway merged with Bally who had a game by the same title. According to Jay Fenton, the real reason for the name change was to avoid legal problems with Warner Bros.


Game's rom.

Machine's picture.

MAME Info:

0.36RC2 [Zsolt Vasvari]


- 0.137u4: Howard Casto changed output name for Desert Gun to something more descriptive (Player1_Gun_Recoil).

- 0.122u6: Zsolt Vasvari hand-fixed clone Road Runner's corrupted cpu1 rom ($1800). We are 99.99% sure that the bad bytes are the same as the Desert Gun ones.

- 0.122u5: Zsolt Vasvari and Guru added clone Road Runner (Midway). Fixed rom names.

- 30th December 2007: Guru - Road Runner is now history. Seems to work OK as-is in MAME, but when you miss a shot, some junk text appears in the middle of the screen. When comparing the bytes in the ROM to the same ROM from Desert Gun, it's not just a name change. There are other bytes that are different, so perhaps just something in the MAME driver memory map needs adjusting? I'm sure someone will investigate it soon.

- 29th December 2007: Guru - I'm still researching the strange ROM types on Road Runner so I didn't touch that yet.

- 21st December 2007: Guru - A huge box arrived today. That 19.75kg box looks mighty impressive, although I'm not sure that all of it is going to be useful. Some could be alt. versions but most don't work so I'll need to dump all of these before I can tell exactly what they are. It contains Road Runner (Midway, 8080 L-board hardware, 1978) and others. Thanks to Tingoes for sending these out.

- 0.111u4: Zsolt Vasvari and Derrick Renaud added partial sound emulation and properly added gun recoil output in Desert Gun. Changed 8080 CPU clock speed to 1996800 Hz. Replaced Samples sound with Discrete. Added 'Coinage' dipswitch and fixed 'Language', 'Extended Time At' and 'Game Time'.

- 0.111u1: Added Samples (Invaders) sound.

- 0.61: Light gun support [Bryan McPhail].

- 8th May 2000: Zsolt Vasvari fixed Desert Gun.

- 0.36RC2: Zsolt Vasvari added Desert Gun (Midway 1977).

- 7th March 2000: Zsolt Vasvari added Desert Gun and Shuffleboard to the 8080bw driver.

Other Emulators:

* Laser

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Desert Gun

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Romset: 8 kb / 4 files / 5.76 zip

MAME XML Output:

       <game name="desertgu" sourcefile="mw8080bw.c">
              <description>Desert Gun</description>
              <rom name="9316.1h" size="2048" crc="c0030d7c" sha1="4d0a3a59d4f8181c6e30966a6b1d19ba5b29c398" region="maincpu" offset="0"/>
              <rom name="9316.1g" size="2048" crc="1ddde10b" sha1="8fb8e85844a8ec6c0722883013ecdd4eeaeb08c1" region="maincpu" offset="800"/>
              <rom name="9316.1f" size="2048" crc="808e46f1" sha1="1cc4e9b0aa7e9546c133bd40d40ede6f2fbe93ba" region="maincpu" offset="1000"/>
              <rom name="desertgu.e" size="2048" crc="ac64dc62" sha1="202433dfb174901bd3b91e843d9d697a8333ef9e" region="maincpu" offset="1800"/>
              <chip type="cpu" tag="maincpu" name="8080" clock="1996800"/>
              <chip type="audio" tag="mono" name="Speaker"/>
              <chip type="audio" tag="discrete" name="DISCRETE"/>
              <display tag="screen" type="raster" rotate="0" width="260" height="224" refresh="59.541985" pixclock="4992000" htotal="320" hbend="0" hbstart="260" vtotal="262" vbend="0" vbstart="224" />
              <sound channels="1"/>
              <input players="1" buttons="1" coins="1">
                     <control type="lightgun" minimum="16" maximum="127" sensitivity="70" keydelta="10"/>
              <dipswitch name="Language" tag="IN1" mask="12">
                     <dipvalue name="English" value="0" default="yes"/>
                     <dipvalue name="German" value="4"/>
                     <dipvalue name="French" value="8"/>
                     <dipvalue name="Danish" value="12"/>
              <dipswitch name="Extended Time At" tag="IN1" mask="48">
                     <dipvalue name="5000" value="0"/>
                     <dipvalue name="7000" value="16" default="yes"/>
                     <dipvalue name="9000" value="32"/>
                     <dipvalue name="Test Mode" value="48"/>
              <dipswitch name="Coinage" tag="DIPSW01SET1" mask="3">
                     <dipvalue name="2 Coins/1 Credit" value="2"/>
                     <dipvalue name="1 Coin/1 Credit" value="0" default="yes"/>
                     <dipvalue name="2 Coins/3 Credits" value="3"/>
                     <dipvalue name="1 Coin/2 Credits" value="1"/>
              <dipswitch name="Game Time" tag="DIPSW01SET2" mask="3">
                     <dipvalue name="40 seconds + 30 extended" value="0"/>
                     <dipvalue name="50 seconds + 30 extended" value="1" default="yes"/>
                     <dipvalue name="60 seconds + 30 extended" value="2"/>
                     <dipvalue name="70 seconds + 30 extended" value="3"/>
              <adjuster name="Music Volume" default="60"/>
              <driver status="imperfect" emulation="good" color="good" sound="imperfect" graphic="good" savestate="supported" palettesize="0"/>

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