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Ms. Pac-Man Plus

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Ms. Pac-Man Plus

| 1981

Release type:
Units produced: hack
Controls/Input Device: Control(joy4way)
Number of Players: 2
More Creator:
More Coder/Software:
License from/Copyright:
SoundMix: Mono
More Graphics/Artwork:
More Music/Sound:
Acting Talent involved:
More Machine Details:
More System Details:
Game Awards Nominations:
Game Awards Won:
Title a.k.a.:
Avg. Playtime:
MAME folder name: mspacpls

Display: raster 288x224 @ 60.61Hz (60.61 pixclock)
Sound: 1 channels

Emulated in MAME via driver pacman.c:
Status: good; Emulation: good
Graphic: good; Sound: good; Color: good
Palette size: 512; Savestate: supported

5e with 4096kb
sha1:5e8b472b615f12efca3fe792410c23619f067845 crc:5c281d01
5f with 4096kb
sha1:fd6a1dde780b39aea76bf1c4befa5882573c2ef4 crc:615af909
82s123.7f with 32kb
sha1:8d0268dee78e47c712202b0ec4f1f51109b1f2a5 crc:2fc650bd
82s126.1m with 256kb
sha1:bbcec0570aeceb582ff8238a4bc8546a23430081 crc:a9cc86bf
82s126.3m with 256kb
sha1:0c4d0bee858b97632411c440bea6948a74759746 crc:77245b66
82s126.4a with 256kb
sha1:19097b5f60d1030f8b82d9f1d3a241f93e5c75d6 crc:3eb3a8e4
boot1 with 4096kb
sha1:bc2247ec946b639dd1f00bfc603fa157d0baaa97 crc:d16b31b7
boot3 with 4096kb
sha1:5ea4d907dbb2690698db72c4e0b5be4d3e9a7786 crc:1821ee0b
boot4 with 4096kb
sha1:3022a408118fa7420060e32a760aeef15b8a96cf crc:165a9dd8
mspacatk.2 with 4096kb
sha1:6ff73e4da4910bcd2ca3aa299d8ffad23f8abf79 crc:0af09d31
mspacatk.5 with 4096kb
sha1:ee5b266b1cc178df31fc1da5f66ef4911c653dda crc:e6e06954
mspacatk.6 with 4096kb
sha1:c1ba630cb8fb665c4881a6cce9d3b0d4300bd0eb crc:3b5db308
Mameinfo.dat entry:
0.37b10 [Yochizo]


- 0.147u2: hap fixed clone Omega Fighter Special. The game fails to boot or finish post. After showing bad rom errors, the game resets.

- 0.147u1: Fixed maincpu rom loading.

- 0.122u7: Fixed gfx1/2/3/4/5 rom loading.

- 0.89u3: Changed Z80 CPU2 clock speed to 5MHz.

- 0.37b10: Yochizo added 'Omega Fighter' (UPL 1989) and clone Omega Fighter Special.

- 21st November 2000: Yochizo fixed some graphics bugs in the Omega Fighter / Atomic Robo-kid driver.

- 8th November 2000: Yochizo sent in a driver for Omega Fighter and Atomic Robo-kid.

- 25th April 1999: Dumped Omega Fighter Special.

LEVELS: 8 (restarts once)

Other Emulators:

* FB Alpha


* Raine

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Romset: 2016 kb / 8 files / 457.8 zip

Credits Mameinfo and Mametesters Project Robert J. Rabgno et al.
History.dat entry:
Ms. Pac-Man Plus (c) 1981 Two-Bits Score.

Basically this game is "Pac-Man", with a few minor differences. The major difference is that the ghosts have fewer restrictions on their movement, making them more formidable. Also adding to the challenge are the different mazes and the fact that the fruit no longer stays in one place, but moves in, out and around the maze. Fortunately there is a power pellet in each corner that (usually) turns the ghosts blue for a period of time, allowing you to eat them for points.


Main CPU : Zilog Z80 (@ 3.072 Mhz)
Sound Chips : Namco 3-channel WSG (@ 96 Khz)

Screen orientation : Vertical
Video resolution : 224 x 288 pixels
Screen refresh : 60.61 Hz
Palette colors : 16

Players : 2
Control : 4-way joystick


Ms. Pac-Man Plus seems to be the original "Ms. Pac-Man" hack, as the mazes here show up the same way they do in Ms. Pac-Man (each maze shows up in each rack between the intermissions).

While the Ms. Pac-Man hacks are creative with the mazes, they have trouble dealing with other aspects of play. One problem the Ms. Pac-Man hacks have is that the fruit walks along the routes of the original mazes, meaning the fruit is unreachable during part of its walk to and from the center. Also, the ghosts slow down at odd places during the first three racks. Such slowing down only makes sense by looking at the original mazes and seeing where the tunnels would be.

Unlike the Pac-Man hacks, the Ms. Pac-Man hacks don't mess with the scores you get from eating dots, fruit and ghosts.


Dot : 10 points
Energizer : 50 points
Ghosts : 200, 400, 800, 1600 points
Cherry : 100 points
Strawberry : 200 points
Peach : 500 points
Pretzel : 700 points
Apple : 1000 points
Pear : 2000 points
Banana : 5000 points


Edit this entry:

Licensed from Alexis Bousiges under a CC Attribution 3.0 License
cheat.dat entry:
00100000 4E14 00000506 FFFFFFFF Infinite Lives
20A00000 1774 003CE0C3 FFFFFFFF Invincibility
20A10000 3CE0 000420A7 FFFFFFFF Invincibility (2/4) 1st = jp $3CE0, 2nd = and a/jp nz, $3CE7
20B10000 3CE3 1FBDC3AF FFFFFFFF Invincibility (3/4) xor a/jp $1FBD (Normal Ghost)
20B10000 3CE7 1777C3AF FFFFFFFF Invincibility (4/4) xor a/jp $1777 (Blue Ghost)
20800000 180B 00000001 FFFFFFFF Enable Speed Hack This will greatly speed up your character.
00500001 4E0D 000001E0 FFFFFFFF Finish this Level Quick Now! You will either finish this level straight away or after another 20 dots
62000000 0000 00000000 00000000 Select Starting Level For the best effect deactivate this cheat after you've started the Level
00090000 4E0A 0000007E 00000068 Strawberry
00098000 4E13 00000001 00000000 Strawberry (2/2)
00090000 4E0A 0000007F 00000068 Orange
00098000 4E13 00000002 00000000 Orange (2/2)
00090000 4E0A 00000080 00000068 Pretzel
00098000 4E13 00000003 00000000 Pretzel (2/2)
00090000 4E0A 00000081 00000068 Apple
00098000 4E13 00000004 00000000 Apple (2/2)
00090000 4E0A 00000082 00000068 Pear
00098000 4E13 00000005 00000000 Pear (2/2)
00090000 4E0A 00000083 00000068 Banana
00098000 4E13 00000006 00000000 Banana (2/2)
00090000 4E0A 00000084 00000068 Multifruit 1a
00098000 4E13 00000007 00000000 Multifruit 1a (2/2)
00090000 4E0A 00000085 00000068 Multifruit 1b
00098000 4E13 00000008 00000000 Multifruit 1b (2/2)
00090000 4E0A 00000086 00000068 Multifruit 2
00098000 4E13 00000009 00000000 Multifruit 2 (2/2)
62000000 0000 00000000 00000000 Select Level (for Practice) Do NOT use in conjunction with the standard Select Starting Level cheat
00010000 4E13 00000000 FFFFFFFF Cherry
00010000 4E13 00000001 FFFFFFFF Strawberry
00010000 4E13 00000002 FFFFFFFF Orange
00010000 4E13 00000003 FFFFFFFF Pretzel
00010000 4E13 00000004 FFFFFFFF Apple
00010000 4E13 00000005 FFFFFFFF Pear
00010000 4E13 00000006 FFFFFFFF Banana
00010000 4E13 00000007 FFFFFFFF Multifruit (board 1)
00010000 4E13 00000009 FFFFFFFF Multifruit (board 2)
00010000 4E13 000000FF FFFFFFFF Split-Screen (Unplayable)
00010000 4E13 000000FE FFFFFFFF No maze or dots(Unfinishable)
62000000 0000 00000000 00000000 Select Ghost Changeback Speed
00110000 4DBD 00000000 FFFFFFFF Stay blue until eaten
00110000 4DBD 00000258 FFFFFFFF Slow
00110000 4DBD 00000168 FFFFFFFF Moderate
00110000 4DBD 000000F0 FFFFFFFF Quick
00110000 4DBD 00000078 FFFFFFFF Lightning
00110000 4DBD 00000001 FFFFFFFF No change to blue
60000000 0000 00000000 00000000 ---------------------
60000000 0000 00000000 00000000 Ghost Status Cheats
60000000 0000 00000000 00000000 ---------------------
00000000 4DA7 00000001 FFFFFFFF Red always blue
00000000 4DA8 00000001 FFFFFFFF Pink always blue
00000000 4DA9 00000001 FFFFFFFF Green always blue
00000000 4DAA 00000001 FFFFFFFF Orange always blue
00000000 4DA5 00000000 FFFFFFFF Ghosts Always Edible (No Pts)

Credit Pugsy's MAME Cheat file