Resources

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Introduction to arcade PCB repair

Lesson 1:Getting started and basic CPU signals

Lesson 2:Introduction to reading schematics

Lesson 3:Understanding Buses and the Address Decoding Circuit

Lesson 4:Testing ROMS in circuit with the FLUKE 9010

Lesson 5:Testing RAMS in circuit with the FLUKE 9010

Lesson 6:Testing video with the FLUKE 9010

Lesson 7:Testing inputs/controls with a logic probe, multimeter or FLUKE 9010

Centipede schematics example (centipede-schematic-1.jpg)

Centipede memory map (centipede-memory-map.png)

Introduction to ROM arcade ROM hacking video series

Lesson 1: Workstation Setup

Lesson 2.01: Decimal, Hex and Binary

Lesson 3: Finding Static Data and Modifying (the pacman ghost name hack)

Lesson 4: Finding non-ASCII strings

Lesson 5 Part 1: Creating a Free Play Hack (Finding the credit counter in RAM)

Lesson 5 Part 2: Creating a Free Play Hack (Foundations of Assembly Language Programming)

Lesson 5 Part 3: Creating a Free Play Hack (Assembly Language Lab)

Lesson 5 Part 3: Required frogger.26 file

Lesson 5 Part 4: Creating a Free Play Hack (The Credit Hack)

Lesson 5 Part 5: Creating a Free Play Hack (Never Lose Credits)

Lesson 6: Changing Colors

Lesson 7 Part 1: Bypassing Checksums

More lessons coming soon!...

philmurr's Galaxian/Moon Cresta/Scramble test rom with sprites

philmurr's Galaxian/Moon Cresta/Scramble test rom with NO sprites

philmurr's Mr. Do test rom - MD5 checksum

Hacks

ROM hacking tutorial

Victory Road free play hack

Tempest board hack

Centipede Single ROM hack

Galaxian daughter board removal/ no board changes hack

Tempest board hack

Sega/Gremlin VICDUAL (Carnival, Tranquilzer Gun, Invinco/Head On 2 etc) Single ROM hack

Sega/Gremlin VIC/Dual VIC switching power supply hack

Audio jack for homemade JAMMA <-> Not Jamma adapter hack

5 minute Asteroids <-> Asteriods Deluxe cabaret adapter instructions

Useful 3D printed arcade parts designs

All 3D designs

Reverse Engineering

Burgertime reverse engineering information

Millipede reverse engineering information

Mr. Do reverse engineering information

Frogger reverse engineering information

Repair Logs

Asteroids Repair Logs

Asteroids Deluxe Repair Logs

Battlezone Repair Logs

Crystal Castles Repair Logs

Pole Position Repair Logs

Millipede Repair Logs

Centipede Repair Logs

Missile Command Repair Logs

Dig Dug Repair Logs

Kangaroo Repair Logs

Monte Carlo Repair Logs

Xevious Repair Logs

Rally-X Repair Logs

Pac man / Ms. Pacman Repair Logs

Galaxian Repair Logs

Moon Cresta Repair Logs

Bagman Repair Logs

Pooyan Repair Logs

Victory Road Repair Logs

Carnival Repair Logs

Super Space Attack Repair Logs

Head On Repair Logs

Invinco Repair Logs

Exidy Targ Repair Logs

Rock-ola Eyes Repair Logs

Rock-ola Nibbler Repair Logs

Centuri/Tekhan Swimmer Repair Logs

Spy Hunter Switcher issue fixes

Miscellaneous

Wiring of an Atari Volcanoe Button (with LED)

Troubleshooting information and guides

Atari Centipede trouble shooting information

Sega/Gremlin Comotion trouble shooting information

Atari Missile Command trouble shooting information

Atari Dig Dug trouble shooting information

Atari Millipede trouble shooting information

Midway Galaxian trouble shooting information

Sega/Gremlin Carnival/Invinco/VIC/VIC Dual trouble shooting information

Useful online converters

Convert a 27512 image to a 82S123

Convert a 27512 image to a 82S129

Convert a 27512 image to a 82S131

Convert a 27512 image to a 82S135

Convert a 27512 image to a 82S147

Convert a 2716 image to work on a 2732

Convert a 2764 image to work on a 27128
Convert a 2764 image to work on a 27256
Convert a 2764 image to work on a 27512

Convert a 27128 image to work on a 27256
Convert a 27128 image to work on a 27512

Convert a 27256 image to work on a 27512

Fluke 9010a information

Asteroids Fluke 9010a ROM signature checksum algorithm (in PERL)

HP5004a signatures guides

Atari Centipede, Millipede, Missile Command - Courtesy of KLOV user SpudJones

General Information

Basics of CPU / Memory Access

Converting Binary to Hex

Converting Hex to Decimal