MAWS - showing resource: mspacmat

title	Ms. Pac Attack
set name	mspacmat
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	66.1% after 35 votes
parent	Ms. Pac-Man
other clones	Ms. Pac-Man (bootleg) Ms. Pac-Man (bootleg, (encrypted)) Ms. Pac-Man (with speedup hack) Ms. Pac-Man Plus Ms. Pacman Champion Edition / Super Zola Pac Gal Pac-Gal

colour emulation	good
palette	512
display type	raster
orientation	vertical
resolution	224x288
frequency	60.606061Hz

sound emulation	good
channels	mono

players	2
nplayers	2P alt
controls	4 way joystick
buttons	1
coin slots	2

cpu	Z80 @ 3.072MHz
audio	Namco @ 0.096MHz

version added

.037b16

last change(s)

none since version .53

roms

name	size	crc	set	sha1
pacman.6e	4096	c1e6ab10	mspacman	e87e059c5be45753f7e9f33dff851f16d6751181
pacman.6f	4096	1a6fb2d4	mspacman	674d3a7f00d8be5e38b1fdc208ebef5a92d38329
pacman.6h	4096	bcdd1beb	mspacman	8e47e8c2c4d6117d174cdac150392042d3e0a881
pacman.6j	4096	817d94e3	mspacman	d4a70d56bb01d27d094d73db8667ffb00ca69cb9
u5	2048	f45fbbcd	mspacman	b26cc1c8ee18e9b1daa97956d2159b954703a0ec
u6pacatk	4096	f6d83f4d	mspacmat	6135b187d6b968554d08f2ac00d3a3313efb8638
u7	4096	c82cd714	mspacman	1d8ac7ad03db2dc4c8c18ade466e12032673f874
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

cabinet	mspacman.png mspacman.png
marquee	mspacman.png
control panel	mspacman.png
flyer	mspacman.png
PCB	mspacman.png

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

-

Professor PacMan

Pac-Land

Puzzle Club

Romset: 35 kb / 13 files / 21.2 zip

history

Ms. Pac Attack (c) 1981.

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

Buttons : 1

- TRIVIA -

Ms. Pac Attack seems to be a hack of "Ms. Pac-Man Plus", as while the mazes are the same as Ms. Pac-Man Plus, they come out in a different order.

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, making the fruit 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.

- UPDATES -

The main difference being the order of levels has been changed. As in the regular "Ms. Pac-Man" game, the maze turns invisible at a certain point. However, in Ms. Pac Attacks, this point is reached much earlier - at about the 144th screen instead of the 255th.

- 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-attack&page=detail&id=1697&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
view in KLOV
view in System16
view in The Arcade Flyer Archive
view in The Arcade Flyer Archive
view in VGMuseum Gamepics

cheats

code	comments
00000000:04E14:00000006:FFFFFFFF	Infinite Lives
00010000:04E15:00000005:FFFFFFFF	Infinite Lives (2/2)
20A00000:11774:003CE0C3:FFFFFFFF	Invincibility
20A10000:13CE0:000420A7:FFFFFFFF	Invincibility (2/4):1st = jp $3CE0, 2nd = and a/jp nz, $3CE7
20B10000:13CE3:1764C3AF:FFFFFFFF	Invincibility (3/4):xor a/jp $1764 (Normal Ghost)
20B10000:13CE7:1777C3AF:FFFFFFFF	Invincibility (4/4):xor a/jp $1777 (Blue Ghost)
20800000:1180B:00000001:FFFFFFFF	Enable Speed Hack:This will greatly speed up your character.
00000001:04E0E:000000F4:FFFFFFFF	Finish this Level Now!
62000000:00000:00000000:00000000	Select Starting Level:For the best effect deactivate this cheat after you've started the Level
00090000:04E0A:0000007E:00000068	Strawberry
00098000:04E13:00000001:00000000	Strawberry (2/2)
00090000:04E0A:0000007F:00000068	Orange
00098000:04E13:00000002:00000000	Orange (2/2)
00090000:04E0A:00000080:00000068	Pretzel
00098000:04E13:00000003:00000000	Pretzel (2/2)
00090000:04E0A:00000081:00000068	Apple
00098000:04E13:00000004:00000000	Apple (2/2)
00090000:04E0A:00000082:00000068	Pear
00098000:04E13:00000005:00000000	Pear (2/2)
00090000:04E0A:00000083:00000068	Banana
00098000:04E13:00000006:00000000	Banana (2/2)
00090000:04E0A:00000084:00000068	Multifruit 1a
00098000:04E13:00000007:00000000	Multifruit 1a (2/2)
00090000:04E0A:00000085:00000068	Multifruit 1b
00098000:04E13:00000008:00000000	Multifruit 1b (2/2)
00090000:04E0A:00000086:00000068	Multifruit 2
00098000:04E13:00000009:00000000	Multifruit 2 (2/2)
62000000:00000:00000000:00000000	Select Level (for Practice):Do NOT use in conjunction with the standard Select Starting Level cheat
00010000:04E13:00000000:FFFFFFFF	Cherry
00010000:04E13:00000001:FFFFFFFF	Strawberry
00010000:04E13:00000002:FFFFFFFF	Orange
00010000:04E13:00000003:FFFFFFFF	Pretzel
00010000:04E13:00000004:FFFFFFFF	Apple
00010000:04E13:00000005:FFFFFFFF	Pear
00010000:04E13:00000006:FFFFFFFF	Banana
00010000:04E13:00000007:FFFFFFFF	Multifruit (board 1)
00010000:04E13:00000009:FFFFFFFF	Multifruit (board 2)
00010000:04E13:000000FF:FFFFFFFF	Split-Screen (Unplayable)
00010000:04E13:000000FE:FFFFFFFF	No maze or dots(Unfinishable)
62000000:00000:00000000:00000000	Select Ghost Changeback Speed
00110000:04DBD:00000000:FFFFFFFF	Stay blue until eaten
00110000:04DBD:00000258:FFFFFFFF	Slow
00110000:04DBD:00000168:FFFFFFFF	Moderate
00110000:04DBD:000000F0:FFFFFFFF	Quick
00110000:04DBD:00000078:FFFFFFFF	Lightning
00110000:04DBD:00000001:FFFFFFFF	No change to blue
60000000:00000:00000000:00000000	---------------------
60000000:00000:00000000:00000000	Ghost Status Cheats
60000000:00000:00000000:00000000	---------------------
00000000:04DA7:00000001:FFFFFFFF	Red always blue
00000000:04DA8:00000001:FFFFFFFF	Pink always blue
00000000:04DA9:00000001:FFFFFFFF	Green always blue
00000000:04DAA:00000001:FFFFFFFF	Orange always blue
00000000:04DA5:00000000:FFFFFFFF	Ghosts Always Edible (No Pts)