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nbashowt: MAME ROM Information.


NBA Showtime - NBA on NBC (c) 1998 Midway Games.


Midway Vegas hardware

Main CPU : R5000 (@ 200 Mhz), ADSP2104 (@ 16 Mhz)

Sound Chips : (2x) DMA-driven (@ 16 Mhz)

Screen orientation : Horizontal

Video resolution : 640 x 480 pixels

Screen refresh : 57.00 Hz

Palette colors : 65536

Players : 4

Control : 49-way Joystick

Buttons : 3


Michael Jackson used to own this game. It was sold at the official Michael Jackson Auction on Apr. 24th, 2009.


* Match-Up Screen Codes : Enter these at the match-up screen. The order they will be in is Turbo-Shoot-Pass-Direction

Code -- Effect

4-3-0-Right -- Alternate uniform

4-2-0-Right -- Away Uniform

2-0-0-Right -- Big Heads

1-3-1-Left -- Blizzard (outdoors only)

1-2-3-Up -- Fog on (outdoors only)

4-1-0-Right -- Home Uniform

4-0-1-Right -- Midway Uniform

1-2-3-Left -- Night Fog on (outdoors only)

2-0-1-Up -- No hotspots (teams must agree)

3-3-1-Left -- No Replays

4-4-4-Up -- No tip-off

1-4-1-Left -- Rainy Days (outdoors only)

1-0-0-Down -- Show Hot Spot

0-0-1-Down -- Show Shot %

1-2-1-Left -- Snow (outdoors only)

1-2-3-Right -- Swamp Fog on (outdoors only)

4-0-0-Right -- Team Uniforms (teams must agree)

1-2-3-Down -- Thick Fog on (outdoors only)

1-1-1-Down -- Tournament mode (no power-ups allowed)

* Secret Characters : Enter these initials and PIN numbers to unlock secret characters with hidden attributes at the start of a game :

Code -- Effect

CREATR 1954 -- Creature of the Black Lagoon

DANIEL 0604 -- Daniel Thompson

FRANK 1931 -- Frankenstein's Monster

OLDMAN 2001 -- Grandpa

HORSE 1966 -- Horse (White)

JASON 3141 -- Jason Skiles

JAPPLE 6660 -- Jeff Johnson

JENFR 3333 -- Jennifer Hendrick

ROOT 6000 -- John Root

KERRI 0220 -- Kerri Hoskins

KERRI 1111 -- Kerri Hoskins (alt uniform)

LIA 0712 -- Lia Montelongo

LIA 1111 -- Lia Montelongo (alt uniform)

TURMEL 0322 -- Mark Turmell

PINTO 1966 -- Pinto (Brown Horse)

RETRO 1970 -- Retro Bob

SAL 0201 -- Sal DiVita

BRIDE 1935 -- The Bride of Frankenstein

MUMMY 1932 -- The Mummy

WOLFMN 1941 -- The Wolfman


1. NBA Jam (1993)

2. NBA Jam Tournament Edition (1994)

3. NBA Hangtime (1996)

4. NBA Maximum Hangtime (1996)

5. NBA Jam Extreme (1996)

6. NBA Jam 99 (1998, N64)

7. NBA Showtime - NBA on NBC (1999)

8. NBA Jam 2000 (1999, N64)

9. NBA Jam 2001 (2000, GBC)

10. NBA Jam 2002 (2002, GBA)

11. NBA Jam (2003, PS2, X-Box)

12. NBA Jam 2004 (2003, unreleased GameCube prototype)

13. NBA Jam (2010, Nintendo Wii)

14. NBA Jam - On Fire Edition (2011, PSN, XBOX Live)


* Consoles :

Nintendo 64 (1999)

Sony PlayStation (1999)

Sega Dreamcast (1999)

Nintendo Game Boy Color (1999)


Game's rom.

MAME Info:

0.91u1 [Aaron Giles]

HardDisk required


- 0.103u3: Changed ADSP2104 CPU2 clock speed to 16MHz. Removed 4x DMA-driven DAC sounds and fixed dipswitches.

- 16th January 2006: Aaron Giles - Took a decent amount of hacking, but I'm finally into the attract mode in NBA Showtime. The game crashes out pretty quickly and there are other problems, but at least now I can verify that the CHD dump is good (and it is).

- 0.91u1: Aaron Giles added 'NBA Showtime: NBA on NBC' (Midway 1998).

- 13th December 2003: Aaron Giles - I have hard disks for NBA Showtime: NBA on NBC and San Francisco Rush 2049 but no boot ROMs for them. If anyone can help me track those down, I can post more pretty pictures.

Romset: 544 kb / 2 files / 156.2 zip

Harddisk: 3.01 GB (CYLS: 6256, HEADS: 16, SECS: 63 - Compressed: 569.0)

MAME XML Output:

       <game name="nbashowt" sourcefile="vegas.c">
              <description>NBA Showtime: NBA on NBC</description>
              <manufacturer>Midway Games</manufacturer>
              <rom name="nbau27.100" size="524288" crc="ff5d620d" sha1="8f07567929f40a2269a42495dfa9dd5edef688fe" region="user1" offset="0"/>
              <rom name="vegassio.bin" size="32768" crc="d1470e23" sha1="f6e8405cfa604528c0224401bc374a6df9caccef" region="dcs" offset="0"/>
              <disk name="nbashowt" sha1="f7c56bc3dcbebc434de58034986179ae01127f87" region="drive_0" index="0" writable="yes"/>
              <chip type="cpu" tag="maincpu" name="R5000 (little)" clock="200000000"/>
              <chip type="cpu" tag="dcs2" name="ADSP-2104" clock="16000000"/>
              <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="480" refresh="57.000000" pixclock="17510400" htotal="640" hbend="0" hbstart="640" vtotal="480" vbend="0" vbstart="480" />
              <sound channels="2"/>
              <input players="4" buttons="3" coins="4" service="yes" tilt="yes">
                     <control type="joy" ways="8"/>
              <dipswitch name="Coinage Source" tag="DIPS" mask="1">
                     <dipvalue name="Dipswitch" value="1"/>
                     <dipvalue name="CMOS" value="0" default="yes"/>
              <dipswitch name="Coinage" tag="DIPS" mask="14">
                     <dipvalue name="Mode 1" value="14" default="yes"/>
                     <dipvalue name="Mode 2" value="8"/>
                     <dipvalue name="Mode 3" value="8"/>
                     <dipvalue name="Mode 4" value="2"/>
                     <dipvalue name="Mode ECA" value="12"/>
                     <dipvalue name="Free Play" value="0"/>
              <dipswitch name="Curency Type" tag="DIPS" mask="48">
                     <dipvalue name="USA" value="48" default="yes"/>
                     <dipvalue name="French" value="32"/>
                     <dipvalue name="German" value="16"/>
                     <dipvalue name="Free Play" value="0"/>
              <dipswitch name="Unknown" tag="DIPS" mask="64">
                     <dipvalue name="0" value="64"/>
                     <dipvalue name="1" value="0" default="yes"/>
              <dipswitch name="Game" tag="DIPS" mask="128">
                     <dipvalue name="NBA Showtime" value="128" default="yes"/>
                     <dipvalue name="Blitz 99" value="0"/>
              <dipswitch name="Joysticks" tag="DIPS" mask="256">
                     <dipvalue name="8-Way" value="256" default="yes"/>
                     <dipvalue name="49-Way" value="0"/>
              <dipswitch name="Graphics Mode" tag="DIPS" mask="1536">
                     <dipvalue name="512x385 @ 25KHz" value="512" default="yes"/>
                     <dipvalue name="512x256 @ 15KHz" value="1024"/>
              <dipswitch name="Graphics Speed" tag="DIPS" mask="6144">
                     <dipvalue name="45 MHz" value="0"/>
                     <dipvalue name="47 MHz" value="2048"/>
                     <dipvalue name="49 MHz" value="4096"/>
                     <dipvalue name="51 MHz" value="6144" default="yes"/>
              <dipswitch name="Number of Players" tag="DIPS" mask="8192">
                     <dipvalue name="2" value="8192"/>
                     <dipvalue name="4" value="0" default="yes"/>
              <dipswitch name="Power On Self Test" tag="DIPS" mask="16384">
                     <dipvalue name="No" value="0" default="yes"/>
                     <dipvalue name="Yes" value="16384"/>
              <dipswitch name="Test Switch" tag="DIPS" mask="32768">
                     <dipvalue name="Off" value="32768" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <driver status="preliminary" emulation="preliminary" color="good" sound="preliminary" graphic="good" savestate="supported" palettesize="0"/>
              <slot name="drive_0">
                     <slotoption name="hdd" devname="hdd" default="yes"/>
              <slot name="drive_1">
                     <slotoption name="hdd" devname="hdd"/>

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