game
icon
title Ms. Pac-Man Plus
set name mspacpls
manufacturer hack
year 1981
genre Maze (hof)
category Maze (hof)
driver status good
driver source pacman.c
snapshots MW: in game | parent / CT: in game | title | parent / Mr. Do: parent / PS: in game | title | parent
zoom
rating

59.8% after 34 votes
 
parent Ms. Pac-Man
other clones Ms. Pac Attack
Ms. Pac-Man (bootleg)
Ms. Pac-Man (bootleg, (encrypted))
Ms. Pac-Man (with speedup hack)
Ms. Pacman Champion Edition / Super Zola Pac Gal
Pac-Gal
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display
colour emulation good
palette 512
display type raster
orientation vertical
resolution 224x288
frequency 60.606061Hz
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sound
sound emulation good
channels mono
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controls
players 2
nplayers 2P alt
controls 4 way joystick
buttons 0
coin slots 2
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hardware
cpu Z80 @ 3.072MHz
audio Namco @ 0.096MHz
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data
version added .025
last change(s) none since version .53
roms
name size crc set flags sha1
boot1  4096  d16b31b7  mspacpls    bc2247ec946b639dd1f00bfc603fa157d0baaa97 
mspacatk.2  4096  0af09d31  mspacpls    6ff73e4da4910bcd2ca3aa299d8ffad23f8abf79 
boot3  4096  1821ee0b  mspacpls    5ea4d907dbb2690698db72c4e0b5be4d3e9a7786 
boot4  4096  165a9dd8  mspacpls    3022a408118fa7420060e32a760aeef15b8a96cf 
mspacatk.5  4096  e6e06954  mspacpls    ee5b266b1cc178df31fc1da5f66ef4911c653dda 
mspacatk.6  4096  3b5db308  mspacpls    c1ba630cb8fb665c4881a6cce9d3b0d4300bd0eb 
5e  4096  5c281d01  mspacman    5e8b472b615f12efca3fe792410c23619f067845 
5f  4096  615af909  mspacman    fd6a1dde780b39aea76bf1c4befa5882573c2ef4 
82s123.7f  32  2fc650bd  mspacman    8d0268dee78e47c712202b0ec4f1f51109b1f2a5 
82s126.4a  256  3eb3a8e4  mspacman    19097b5f60d1030f8b82d9f1d3a241f93e5c75d6 
82s126.1m  256  a9cc86bf  mspacman    bbcec0570aeceb582ff8238a4bc8546a23430081 
82s126.3m  256  77245b66  mspacman    0c4d0bee858b97632411c440bea6948a74759746 
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cabinet art
cabinet mspacman.png mspacman.png
marquee mspacman.png
control panel mspacman.png
flyer mspacman.png
PCB mspacman.png
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additional information
info 0.37b16 [Dave Widel]

0.01 [Nicola Salmoria, Allard van der Bas]

NOTE:
  • Sometimes the colours on the first level appear incorrect until you either die or finish the level. The original game does this as well, although it doesn't happen very often. It appears that this is triggered by insert a credit and pressing start at a certain point in the attract mode. Because most people add credits shortly after the game has finished booting up, this feature is more likely to appear in MAME than on an actual arcade machine.
- Your character in the game moves too slow; in the arcade you go much faster. The speed in mame is correct to the original game. However, many of the Ms. Pac-Man machines that are still in arcades have had been modified to speed up the gameplay. You can play this way by enabling cheats in MAME. Note: This is a 'built-in' cheat, and is accessed from the dip switch menu instead of the usual cheat menu. You don't need the cheat.dat file for this.
  • In the Ms. Pac-Man intro, when the ghosts appear from right to left below the square, the movement is smooth but there's a little hiccup now and then. Has been verified that a real machine does the exact same thing.
  • Various original bugs. http://donhodges.com/ms_pacman_bugs.htm (ID 02632)
  • Clone mspacpls: The prizes go through the walls. The game is a hack -- while the mazes that the characters follow have been changed, the prizes still follow the original mazes.
Bugs:
  • mspacmab: On a (real) machine, Ms. Pac usually ends at level 134, occasionally it makes it as far as 141 but I've never seen it myself. In MAME it always ends at 141. I've only tested it on mspacmab, but I'm sure all the games based on mspacman code do it also since it's an unmapped read causing it. dwidel (ID 00823)
WIP:
  • 0.128u4: More accurately describes the aux board behavior for Ms. Pac-Man [Steve Golson]. There is a thorough description of how the board works. mspacman is a more faithful emulation. In particular you can now enter service mode (F2) at anytime during game play.
  • 0.126u3: David Haywood changed unmapped read for Ms. Pac-Man to see if it changes tunnel behavior (suggestion by dwidel).
  • 0.126u2: Brian Troha added information on how to toggle the built-in speedup in Ms. Pac-Man.
  • 0.105u2: David Widel added clone Ms. Pac-Man (bootleg, (encrypted)). The game is encrpyted by a 74298 sitting on top of the rom at 6f. The select line is tied to a2; a0 and a1 of the eprom are are left out of socket and run through the 74298.
  • 0.84u6: Aaron Giles added clone Ms. Pac-Man (with speedup hack). Removed existing speedup cheat hack from Pacman/Ms Pac Man as the way it was implemented in MAME is NOT how it was implemented in the arcades. I have added the hacked software ROMs as three separate sets for Puck Man, Pac Man, and Ms. Pac Man. These hacked ROMs do not let you control the speed of the game with a button; the game is always fast, and Pac Man is faster than the ghosts. Also added a fake dipswitch to control the equivalent of the hardware version of the speedup hack. It can be set to "Disabled", "Enabled Always", or "Enabled with Button". Note that this hack speeds up everyone, including the ghosts, as the original hack did.
  • 0.55: Added clone Ms. Pacman Champion Edition / Super Zola Pac Gal.
  • 0.37b16: Dave Widel decrypted the original Ms. Pac Man. Added Ms. Pac-Man (Midway) and clone Ms. Pac Attack. Renamed (mspacman) to (mspacmab) and (mspacatk) to (mspacpls).
  • 0.35b11: Victor Trucco added clone Pac-Gal (hack 1981).
  • 0.30: Nicola Salmoria and Aaron Giles completely rewritten the Namco waveform audio subsystem. This gets rid of some artefacts in Pac Man (eating a ghost) and Ms Pac Man (eating dots while a fruit is bouncing).
  • 0.29: Changed description of clone 'Ms. Pac Man Attacks' to 'Miss Pac Plus'.
  • 0.25: Added clone 'Ms. Pac Man Attacks'. Use the 2 player start button to accelerate. This is a feature of the original game. In Miss Pac Plus the bonus fruits move through the maze walls. This is normal, the original does the same.
  • 0.18: Sprite placement in Pac Man, Ms Pac Man and Crush Roller should now be arcade perfect. Thanks to Richard Davies who verified it on a real machine.
  • 0.15: Hiscore save in Ms. Pac Man.
  • 0.01: Nicola Salmoria added Ms. Pac Man (bootleg 1981). Blinky and Pinky seem to be shifted one pixel to the right. This is really annoying, but I can't seem to be able to understand why. Maybe there is an additional "sprite offset" register somewhere? Or did the original just behave this way? Note that we can't fix it by just moving sprites 0 and 1 one pixel to the left, because when Pac Man eats a power pill the sprites order is changed so that Pac Man is drawn over the ghosts. It becomes sprite 0, and Blinky becomes sprite 4.
Other Emulators:
  • CottAGE
  • HiVE
  • JAE
  • JEmu
  • JEmu2
  • Mimic
  • Raine
  • Retrocade
  • Sparcade
  • Tickle
  • VAntAGE
Recommended Games (Maze Pac-Man):

Pac-Man / PuckMan

Pac-Man - Namco Classics Collection Vol.2

Pac-Man Plus

Super Pac-Man

Pac & Pal

Pac-Mania

4 Fun in 1 (Ghost Muncher)

Ghostmuncher Galaxian (bootleg)

Ms. Pac-Man

Jr. Pac-Man

Hyper Pacman

Twinkle

Funny Strip

Puckman Pockimon

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Professor PacMan

Pac-Land

Puzzle Club

Romset: 35 kb / 13 files / 21.2 zip
history 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.


- TECHNICAL -


Main CPU : 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


- TRIVIA -


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.


- SCORING -


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


- SOURCES -


Game's rom.



Edit this entry at Arcade-History.com: http://www.arcade-history.com/?n=ms.-pac-man-plus&page=detail&id=3268&o=2
resource links view in MAWS
view in CAESAR
view high score and replay at MARP
view in Progetto EMMA (Italian)
view in arcade-history.com
view in arcade-history.com
view in GameFAQs
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cheats
cheats
code comments
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)
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