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clocknch: MAME ROM Information.


Lock'n'Chase (c) 1981 Data East.

The game is a maze game. Like "Pac-Man", you're trying to eat up dots while four cops (with the names Spiffy, Smarty, Scaredy and Silly) try to stop you. While you don't have energizers to eat the cops with, you CAN block them off with walls (or better yet, try to trap them in the corners). When you're finished eating dots, there are 2 exits for you to escape from the cops.


DECO Cassette System hardware

Cassette No.11

Main CPU : M6502 (@ 750 Khz), M6502 (@ 500 Khz), I8X41 (@ 500 Khz)

Sound Chips : (2x) AY8910 (@ 1.5 Mhz)

Screen orientation : Vertical

Video resolution : 240 x 240 pixels

Screen refresh : 57.00 Hz

Palette colors : 32

Players : 2

Control : stick

Buttons : 2


Released in April 1981.


Dot : 20 points

Hat : 200 points

Crown : 300 points

Suitcase : 500 points

Telephone : 100 points

Watch : 800 points

Camera : 1,000 points

Sunglasses : 2,000 points

Flashlight : 400 points

Key : 3,000 points

Heart : 5,000 points

Money bags : 500, 1,000, 2,000, 4,000 points

Trap 1 Cop : 100 points

Trap 2 Cops : 300 points

Trap 3 Cops : 1,000 points

Trap 4 Cops : 2,000 points


Game's rom.

Machine's picture.

MAME Info:

0.37b13 [Juergen Buchmueller, Al Kossow]

Artwork available


- 0.145u1: Changed description to 'Lock'n'Chase (DECO Cassette)'.

- 0.133u1: Added dipswitches 'Type of Tape', 'Lives', 'Bonus Life' and 'Country Code'.

- 0.88u2: Changed description to 'Lock'n'Chase (Cassette)'.

- 0.37b14: Changed description to 'Cassette: Lock'n'Chase'.

- 0.37b13: Juergen Buchmueller added 'Cassette: Lock N Chase' (Data East 1981).

- 9th February 2001: Juergen Buchmueller sent in the first version of the DECO Cassette system driver, supporting Lock 'n Chase, Treasure Island, Super Astro Fighter, Astro Fantasia, Lucky Poker, Pro Golf and Mission X. The rest are either not yet dumped or use protection that has not been cracked yet.

LEVELS: 11 (endless)

Recommended Games (Maze):

Amazing Maze

Crush Roller

The Hand

Lady Bug


Lock'n'Chase (DECO Cassette)

Maze Invaders

Mouse Trap




Ali Baba and 40 Thieves

Blue Print

Check Man




Hard Hat



Tylz (prototype)




Lover Boy

Marvin's Maze


New Sinbad 7

Rootin' Tootin'

Sindbad Mystery

Swinging Singles


The Berenstain Bears in Big Paw's Cave

Jack Rabbit


The Three Stooges In Brides Is Brides

Vs. Clu Clu Land

I'm Sorry

Merlins Money Maze

Opa Opa

Klad / Labyrinth



Touche Me

Sel Feena

Tinkle Pit

Twin Brats


Romset: 33 kb / 2 files / 15.3 zip

MAME XML Output:

       <game name="clocknch" sourcefile="decocass.c" romof="decocass">
              <description>Lock'n'Chase (DECO Cassette)</description>
              <manufacturer>Data East Corporation</manufacturer>
              <rom name="v0b-.7e" merge="v0b-.7e" size="4096" crc="23d929b7" sha1="063f83020ba3d6f43ab8471f95ca919767b93aa4" region="maincpu" offset="f000"/>
              <rom name="v1-.5a" merge="v1-.5a" size="2048" crc="b66b2c2a" sha1="0097f38beb4872e735e560148052e258a26b08fd" region="audiocpu" offset="f800"/>
              <rom name="cassmcu.1c" merge="cassmcu.1c" size="1024" crc="a6df18fd" sha1="1f9ea47e372d31767c936c15852b43df2b0ee8ff" region="mcu" offset="0"/>
              <rom name="v2.3m" merge="v2.3m" size="32" crc="238fdb40" sha1="b88e8fabb82092105c3828154608ea067acbf2e5" region="proms" offset="0"/>
              <rom name="v4.10d" merge="v4.10d" size="32" crc="3b5836b4" sha1="b630bb277d9ec09d46ef26b944014dd6165b35d8" region="proms" offset="20"/>
              <rom name="v3.3j" merge="v3.3j" size="32" crc="51eef657" sha1="eaedce5caf55624ad6ae706aedf82c5717c60f1f" region="proms" offset="40"/>
              <rom name="dp-1110_b.dgl" size="32" crc="e09ae5de" sha1="7dec067d0739a6dad2607132641b66880a5b7751" region="dongle" offset="0"/>
              <rom name="clocknch.cas" size="32768" crc="c9d163a4" sha1="3ef55a8d8f603059e263776c08eb81f2cf18b75c" region="cassette" offset="0"/>
              <chip type="cpu" tag="maincpu" name="M6502" clock="750000"/>
              <chip type="cpu" tag="audiocpu" name="M6502" clock="500000"/>
              <chip type="cpu" tag="mcu" name="I8041" clock="6000000"/>
              <chip type="audio" tag="mono" name="Speaker"/>
              <chip type="audio" tag="ay1" name="AY-3-8910A" clock="1500000"/>
              <chip type="audio" tag="ay2" name="AY-3-8910A" clock="1500000"/>
              <display tag="screen" type="raster" rotate="270" width="256" height="240" refresh="57.444853" pixclock="6000000" htotal="384" hbend="0" hbstart="256" vtotal="272" vbend="8" vbstart="248" />
              <sound channels="1"/>
              <input players="2" buttons="2" coins="2">
                     <control type="joy" ways="8"/>
                     <control type="stick" minimum="16" maximum="240" sensitivity="100" keydelta="10"/>
              <dipswitch name="Coin A" tag="DSW1" mask="3">
                     <dipvalue name="2 Coins/1 Credit" value="0"/>
                     <dipvalue name="1 Coin/1 Credit" value="3" default="yes"/>
                     <dipvalue name="1 Coin/2 Credits" value="2"/>
                     <dipvalue name="1 Coin/3 Credits" value="1"/>
              <dipswitch name="Coin B" tag="DSW1" mask="12">
                     <dipvalue name="2 Coins/1 Credit" value="0"/>
                     <dipvalue name="1 Coin/1 Credit" value="12" default="yes"/>
                     <dipvalue name="1 Coin/2 Credits" value="8"/>
                     <dipvalue name="1 Coin/3 Credits" value="4"/>
              <dipswitch name="Type of Tape" tag="DSW1" mask="48">
                     <dipvalue name="MT (Big)" value="0"/>
                     <dipvalue name="invalid?" value="16"/>
                     <dipvalue name="invalid?" value="32"/>
                     <dipvalue name="MD (Small)" value="48" default="yes"/>
              <dipswitch name="Cabinet" tag="DSW1" mask="64">
                     <dipvalue name="Upright" value="0" default="yes"/>
                     <dipvalue name="Cocktail" value="64"/>
              <dipswitch name="Lives" tag="DSW2" mask="1">
                     <dipvalue name="3" value="1" default="yes"/>
                     <dipvalue name="5" value="0"/>
              <dipswitch name="Bonus Life" tag="DSW2" mask="6">
                     <dipvalue name="None" value="0"/>
                     <dipvalue name="15000" value="6" default="yes"/>
                     <dipvalue name="20000" value="4"/>
                     <dipvalue name="30000" value="2"/>
              <dipswitch name="Unknown" tag="DSW2" mask="8">
                     <dipvalue name="Off" value="8" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Unknown" tag="DSW2" mask="16">
                     <dipvalue name="Off" value="16" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Country Code" tag="DSW2" mask="224">
                     <dipvalue name="A" value="224" default="yes"/>
                     <dipvalue name="B" value="192"/>
                     <dipvalue name="C" value="160"/>
                     <dipvalue name="D" value="128"/>
                     <dipvalue name="E" value="96"/>
                     <dipvalue name="F" value="64"/>
              <driver status="good" emulation="good" color="good" sound="good" graphic="good" savestate="unsupported" palettesize="56"/>

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