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mp_sonic: MAME ROM Information.


Sonic The Hedgehog [Mega-Play 01] (c) 1993 Sega.


Sega Mega Play hardware

Main CPU : 68000 (@ 7.670442 Mhz), (2x) Z80 (@ 3.57954 Mhz)

Sound Chips : YM3438 (@ 7.670442 Mhz), (2x) SN76496 (@ 3.57954 Mhz)

Screen orientation : Horizontal

Video resolution : 320 x 224 pixels

Screen refresh : 60.00 Hz

Palette colors : 96

Players : 2

Control : 8-way joystick

Buttons : 3


Released 2 years after the original, this version can be considered as a reduced version :

* Stages : Green hill -> Spring year -> Starlight -> Scrap brain (1,2) -> Final zone.

* You have a limited amount of time per level (usually pretty tight, 1 minute is the easy setting for the first level, 35 seconds seems to be the hardest).

* Extra life boxes do nothing.

* Jumping into the special stage ring does nothing (no special stages).

* When you finish it sonic seems to have the 'you didn't get any emeralds' look despite there being no emeralds due to the lack of special stages.

Official Sega Mega-Play releases list :

[Mega-Play 01] Sonic The Hedgehog

[Mega-Play 02] Golden Axe II

[Mega-Play 03] Grand Slam - The Tennis Tournament

[Mega-Play 04] Tecmo World Cup

[Mega-Play 05] Streets Of Rage 2

[Mega-Play 06] Bio-Hazard Battle

[Mega-Play 07] Sonic The Hedgehog 2

[Mega-Play 08] ???

[Mega-Play 09] Shinobi III - Return of the Ninja Master

[Mega-Play 10] ???

[Mega-Play 11] Mazin Wars

[Mega-Play ??] Columns III - Revenge of Columns

[Mega-Play ??] Gunstar Heroes


Game's rom.

Machine's picture.

MAME Info:

0.71u1 [David Haywood]


- 0.94u5: Removed cpu1 roms ($300000/1). The Game instruction rom will now copied to 0x300000 - 0x310000 (odd/even bytes equal).

- 0.88u2: Changed description to 'Sonic The Hedgehog (Mega Play)'.

- 0.86u4: Changed description to 'Mega Play: Sonic The Hedgehog'.

- 0.83: Changed description to 'MegaPlay: Sonic the Hedgehog'.

- 0.81u7: Barry Rodewald and GreyRogue updated the MegaPlay driver, which makes Sonic The Hedgehog, Golden Axe 2 and Tecmo World Cup fully playable. Megaplay still has a few issues (continue without extra coins etc.).

- 0.81u5: Barry Rodewald improved Megaplay, allowing it to pass more checks.

- 0.73: Added cpu1 roms ($300000/1) and 8-way Joystick, 4x button and 2nd Player.

- 0.72u2: Added 2nd Z80 (3579540 Hz) CPU. Added dipswitches 'Coin slot 1/2', 'Initial Players' and 'Difficulty'.

- 0.71u1: Added 'MegaPlay: Sonic The Hedgehog' (Sega 1993). The driver doesn't boot. David Haywood improved Genesis emulation a bit in preparation for MegaTech / MegaPlay, sound code based on MESS.


- RIGHT or LEFT move Sonic. Hold in either direction to speed up.

- Use DOWN when Sonic's moving for the 'Super Sonic Spin Attack'. 'Squat Down' when Sonic's still.

- Use JUMP button while performing the 'Super Sonic Spin Attack'.

LEVELS: 12 (Green Hill Zone (1-3), Spring Yard Zone (1-3), Star Light Zone (1-3), Scrap Brain Zone (1-2) and Final Zone)

Recommended Games (Sonic):

Sonic The Hedgehog (Mega Play)

Sonic The Hedgehog (Mega-Tech)

Sonic The Hedgehog 2 (Mega Play)

Sonic The Hedgehog 2 (Mega-Tech)

SegaSonic The Hedgehog

Sonic Championship

Romset: 544 kb / 3 files / 390.3 zip

MAME XML Output:

       <game name="mp_sonic" sourcefile="megaplay.c" romof="megaplay">
              <description>Sonic The Hedgehog (Mega Play)</description>
              <biosset name="ver1" description="Megaplay Bios (Ver. 1)" default="yes"/>
              <biosset name="ver2" description="Megaplay Bios (Ver. 2)"/>
              <rom name="ep15294.ic2" merge="ep15294.ic2" bios="ver1" size="131072" crc="aa8dc2d8" sha1="96771ad7b79dc9c83a1594243250d65052d23176" region="mtbios" offset="0"/>
              <rom name="epr-a15294.ic2" merge="epr-a15294.ic2" bios="ver2" size="131072" crc="f97c68aa" sha1="bcabc879950bca1ced11c550a484e697ec5706b2" region="mtbios" offset="0"/>
              <rom name="ep15177.ic2" size="262144" crc="a389b03b" sha1="8e9e1cf3dd65ddf08757f5a1ce472130c902ea2c" region="maincpu" offset="0"/>
              <rom name="ep15176.ic1" size="262144" crc="d180cc21" sha1="62805cfaaa80c1da6146dd89fc2b49d819fd4f22" region="maincpu" offset="1"/>
              <rom name="ep15175-01.ic3" size="32768" crc="99246889" sha1="184aa3b7fdedcf578c5e34edb7ed44f57f832258" region="user1" offset="0"/>
              <chip type="cpu" tag="maincpu" name="68000" clock="7670453"/>
              <chip type="cpu" tag="genesis_snd_z80" name="Z80" clock="3579545"/>
              <chip type="cpu" tag="mtbios" name="Z80" clock="3579540"/>
              <chip type="audio" tag="lspeaker" name="Speaker"/>
              <chip type="audio" tag="rspeaker" name="Speaker"/>
              <chip type="audio" tag="ymsnd" name="YM2612" clock="7670453"/>
              <chip type="audio" tag="snsnd" name="SEGA VDP PSG" clock="3579545"/>
              <chip type="audio" tag="sn2" name="SN76496" clock="3579540"/>
              <display tag="megadriv" type="raster" rotate="0" width="256" height="224" refresh="60.000000" />
              <sound channels="2"/>
              <input players="2" buttons="4" coins="2" service="yes">
                     <control type="joy" ways="8"/>
              <dipswitch name="Coin slot 1" tag="DSW0" mask="15">
                     <dipvalue name="4 Coins/1 Credit" value="7"/>
                     <dipvalue name="3 Coins/1 Credit" value="8"/>
                     <dipvalue name="2 Coins/1 Credit" value="9"/>
                     <dipvalue name="2 coins/1 credit - 5 coins/3 credits - 6 coins/4 credits" value="5"/>
                     <dipvalue name="2 coins/1 credit - 4 coins/3 credits" value="4"/>
                     <dipvalue name="1 Coin/1 Credit" value="15" default="yes"/>
                     <dipvalue name="2 Coins/3 Credits" value="6"/>
                     <dipvalue name="1 Coin/2 Credits" value="14"/>
                     <dipvalue name="1 Coin/3 Credits" value="13"/>
                     <dipvalue name="1 Coin/4 Credits" value="12"/>
                     <dipvalue name="1 Coin/5 Credits" value="11"/>
                     <dipvalue name="1 Coin/6 Credits" value="10"/>
                     <dipvalue name="1 coin/1 credit - 5 coins/6 credits" value="3"/>
                     <dipvalue name="1 coin/1 credit - 4 coins/5 credits" value="2"/>
                     <dipvalue name="1 coin/1 credit - 2 coins/3 credits" value="1"/>
                     <dipvalue name="Free Play" value="0"/>
              <dipswitch name="Coin slot 2" tag="DSW0" mask="240">
                     <dipvalue name="4 Coins/1 Credit" value="112"/>
                     <dipvalue name="3 Coins/1 Credit" value="128"/>
                     <dipvalue name="2 Coins/1 Credit" value="144"/>
                     <dipvalue name="2 coins/1 credit - 5 coins/3 credits - 6 coins/4 credits" value="80"/>
                     <dipvalue name="2 coins/1 credit - 4 coins/3 credits" value="64"/>
                     <dipvalue name="1 Coin/1 Credit" value="240" default="yes"/>
                     <dipvalue name="2 Coins/3 Credits" value="96"/>
                     <dipvalue name="1 Coin/2 Credits" value="224"/>
                     <dipvalue name="1 Coin/3 Credits" value="208"/>
                     <dipvalue name="1 Coin/4 Credits" value="192"/>
                     <dipvalue name="1 Coin/5 Credits" value="176"/>
                     <dipvalue name="1 Coin/6 Credits" value="160"/>
                     <dipvalue name="1 coin/1 credit - 5 coins/6 credits" value="48"/>
                     <dipvalue name="1 coin/1 credit - 4 coins/5 credits" value="32"/>
                     <dipvalue name="1 coin/1 credit - 2 coins/3 credits" value="16"/>
                     <dipvalue name=" 1 coin/1 credit" value="0"/>
              <dipswitch name="Initial Players" tag="DSW1" mask="3">
                     <dipvalue name="4" value="0"/>
                     <dipvalue name="3" value="1" default="yes"/>
                     <dipvalue name="2" value="2"/>
                     <dipvalue name="1" value="3"/>
              <dipswitch name="Difficulty" tag="DSW1" mask="12">
                     <dipvalue name="Hardest" value="0"/>
                     <dipvalue name="Hard" value="4"/>
                     <dipvalue name="Easy" value="8"/>
                     <dipvalue name="Normal" value="12" default="yes"/>
              <driver status="good" emulation="good" color="good" sound="good" graphic="good" savestate="unsupported" palettesize="512"/>

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