July 25, 2017 Some secret updates in the past ten years. New UPL details today though.

July 31, 2007 Thirteen months on and we now have a Cinematronics Color Converter PCB schematics, layout and parts list from David Fish. Also, as I am woring through an overstuffed 'to do' file on my computer, I have uploaded a number of Demon cabinet images from Hans O (I believe). As well as a Missle Command to Crystal Castles conversion manual. Some additional Atari production numbers sourced by Scott Evans are added. A Space Invaders RAM chart has also been added. I've dug up the Asteroids Code Project from Guddler's Domain for your enjoyment? Space Invaders Sound Board details. Rotary Interface Project for the DIY types. Asteroids code differences. B&K Precision setup document My apologies to anyone I haven't credited for the above. Some date back more than two years!

June 26, 2006 New server!

January 10, 2006 Eliminator 4 player prototype program data is now security free thanks to Mark Jenison. David Turner has updated his Gorf and Wizard of War test EPROMs - very nice! Even the super busy Mark Shostak has provided a user manual for the Bug Hound. Asteroids hack from Mr. Cowgill and a previously updated artwork list from Archer. I also have some Sencore adapter docs that I have added. Don't recall where those came from. Plus more that I'm not going to document here as I am lazy.

September 14, 2005 . Hans O. sent along some pictures of a factory installed Amplifone in a Space Duel. James M. also provided a Midway Universal Tester ROM programming guide.

July 21, 2005 . Update to the Space Invaders test ROMs - now includes a PDF that shows jumpers from Jerry Clause.

March 7, 2005 . Cinematronics Tailgunner joystick wiring document from Rich Potts. Also a Taito switching power supply mod from Rich!

October 1, 2004 . Pac-Man cocktail restoration by Archer Maclean. Various updates to the Tempest Code Project and added Tempest Gameplay Secrets. CRT Cross Reference Chart. Complete I, Robot switching power supply manaul. Now updates with links!

August 11, 2004 . Matt gets his baby way. I've updated the site for him with none other than a mirror of the paper arcade. Now with Ron Jeremy! Truth be told, I've updated a few things on the site without noting them on this page. You will also find some good component marking notes courtesy of Mike Haaland. I've also added a number of reproduction artwork images from Archer. And for those of you that play around with vacuum tubes (valves in the UK) I've added biasing information.

June 21, 2004 . Component (capacitor and resistor) marking page is added, as well as some addition Archer Maclean restoration & artwork pictures - including Cinematronic's Rip Off. I've also added a few IC cross references and updated the Wizard of Wor and Gorf Memory Diagnostics ROM.

April 02, 2004 . Gravitar reproduction CPO information!

March 18, 2004 . Archer has a new selection of restoration pictures. This time around it's Computer Space! I've also mirrored the Blaster 30-wave prototype ROMs that Duncan put back together and some Mortal Kombat & NBA Jam info. I've also dug out a document by David Hanes describing a great way to do signature analysis on a Battlezone PCB. I've also updated a few Atari service documents.

February 19, 2004 . Cleaning up my hard drive a bit, so I've gotten around to adding an I, Robot technical page (with surprisingly little technical info as of yet), Bullseye Darts data and a recollection of all the PCB and game numbers that used to be on Spies (plus a few more).

February 16, 2004 . More (!) Archer Maclean restoration pictures - this time of Asteroids. Some additional Atari program data was added.

February 12, 2004 . Its Archer Maclean once again with more pictures of his Atari (and Gottlieb) restorations. There's also a Wizard of War / Gorf diagnostic ROM in the Bally/Midway section thanks to Dave.

February 03, 2004 . Added a lesson in discrete sound implementation in MAME. Also uploaded a Major Havoc PCB conversion doc. More SRAM crosses. Mike Ranger's and Dave Langley's Williams Repair logs. Centipede self-test.

January 19, 2004 . Space Invaders to JAMMA conversion added as well as a Sega vector multi speech board hack from Fred. Also updated a couple of pinouts. Added a bezel construction tutorial.

December 17, 2003 . Lots and lots of redemption (i.e., non video) ROMs and files added. Again, thanks to Mark F. A Cinematronics Solar Quest monitor conversion doc by Rich Potts.

December 12, 2003 . New USA conversions for Kingdom Grandprix and Mahou Daisakusen thanks in no small part to Brian Troha and the Sheep. Spaeth's Missile Command double EPROM hack was also added.

November 17, 2003 . Cleaned up the pinout section. Hopefully it is easier to search. Also added the pinout to UPL's Mouser for all those in need.

October 21, 2003 . Got around to putting up a number of Atari Service Bulletins from the late 70s/early 80s. Hopefully more to come. Also tossed up the pinouts and schematics for a Univid 1000 tester.

October 10, 2003 . Midway boot roms for hard drive games have been added, as well as the Bomberman to Dynablaster conversion. Also added a Millipede 'dux' hack and mirrored Spaeth's Williams high score patches.

September 16, 2003 . Monitor cap kit list and a 720-> Major Havoc conversion project detail have been added.

September 08, 2003 . Joe Magiera dug up some interesting Electrohome vector monitor docs on the G08-105 and G17. Mouse to Trackball conversion and another Gottlieb On Target added (thanks Jess!)

August 29, 2003 . Finally linked some new commented Tempest code and development screenshots. Psychic Force and Masked Riders Battle Club English conversion details added.

August 25, 2003 . Added Michael Hill's POKEY emulator and POKEY LPT interface. A POKEY synth must not be far behind! Added pictures and data of Al Kossow's long ago Sega vector simulations. Also some data on the lost Rock-Ola vector game QB-3. Ed Logg and David Shepperd comments from USENET past are up :) How to make your own Williams multigame. Finally added an assortment of arcade test bench pictures that I've been collecting. Omega Race power supply replacement capacitors. Taito Space Invaders hacks by Paul Swan. Also got around to posting some files on the Taitians I've had knocking around for a while.

Getting busy I am! Added images of Exidy's Top Gunner.

August 21, 2003 . August 16th Superauction pictures are now up.

August 6, 2003 . Added the html version of the Wells-Gardner 19V2000 vector manual. Also the Taito Space Invaders 3 PCB single EPROM hack (and that's a mouthfull!). Added some text from Gene Lewin regarding Bouncer & Turbo Sub.

August 1, 2003 . California Extreme 2003 pictures have been added. MCR Pinouts page. Updated the Electrohome G08-105 manual to include the parts list (Thanks Joe M.!)

July 10, 2003 . Updated the Discs of Tron schematics with a PDF version thanks to Simon. Also added the POKEY datasheet and some transistor and IC cross-reference lists. At some point in the past month I've also updated the Space Invaders test ROM, added some schematics for Exidy's Vertigo and updated Craig's Discs of Tron hacks page. Mirrored the Bubbles Tribue page and the Atari Signature Analysis page.

June 05, 2003 . Added info on the unreleased Gottlieb game 'Tylz'. Also added the Battlezone to Red Baron PCB hack. Centpede Sync PROM - go Phil!

May 29, 2003 . Thanks Phil for the Crystal Castles proms!.

May 20, 2003 . Latest Mesquite auction pictures are up. Also added the Pac-Man to Pengo hack.

May 05, 2003 . Uploaded the Asteroids Deluxe state machine PROM and a B&K setup document. Trog multigame info added. Thanks to Mark F., I've added the Playchoice 10 hack data snd the Gauntlet 3D/Dark Legacy conversion data as well.

April 25, 2003 . Added the G08-105 manual and made some other slight corrections to some pages. Added the Williams video decoder PROM information and the Williams to JAMMA document.

April 07, 2003 . Uploaded some 'new' Gottlieb ROMs. :)

March 17, 2003 . The March 15th Superauction pics are now viewable.

February 10, 2003 . Put up Phil Morris' Pac-Man repair guide.

February 05, 2003 . Added some Sega G80 hacks for a single EPROM and the coin hack - both by Paul Tonizzo. Finally added the Atari 1987 Distributor price list (thanks Stephen!) and added a nice interview with Archer Maclean.

January 31, 2003 . Klax lessons from Lyle Rains. Also added Another memory cross reference list. Updated the G05 transistor cross-reference because it had a small error :)

January 13, 2003 . Pictures from the January 11th Superauction are up, as are the most complete listings of Arcade pinouts on the net! Also added the Sega STV Dual bios hack.

January 05, 2003 . Added some more USA ROM conversions thanks to Brian and Mark! Cachat to Tube-It; Don Pachi; Kingdom Grand Prix; and Sol Divide.

December 09, 2002 . Mark Shostak's Asteroids code mods for an Asteroids Deluxe cabinet and Atari confidential documents uploaded. Sinistar prototype ROMs and also added an Ed Logg interview.

December 05, 2002 . Craig Aker's MCR multigame and Two Tigers info added. Uploaded a bunch of Gottlieb On-Target newsletters courtesy of Don Sokolis.

December 02, 2002 . More auction pictures up from thre November 30th Superauction in Mesquite. Also put up an interesting Trackball to Joystick hack. Williams Robotron cabaret prototype #1 pictures and info, Arkanoid Level editor and some monitor tube swapping info have been added. Moppet manuals and some pictures. MAME compiling info and a bunch of NAMCO stuff. Enjoy!

November 12, 2002 . Put up the latest G08 monitor FAQ file. Also added a Cinematronics CPU ROM 'upgrade' doc.

October 25, 2002 . . Added some Cinematronics Sundance PCB images from Karl R.

October 15, 2002 . . Cinematronics Exorcisor schematics, PCB layout and cable information courtesy of David Fish. Also added a picture of a real Exorcisor. Fixed the copy /b command in the Battlezone single ROM hack. Whoops! Updated Roy K's Q*bert sound board flowchart and the G05 Transistor Xreference chart.

August 13, 2002 . . August 10th Superauction photos are up. Missile Command sync PROM data and a Black Widow restoration by Archer MacLean.

July 24, 2002 . . Uniwatt substituions by Rodger Boots. Atari 1993 Distributor Parts and Price list - thanks to Stephen Beall!

July 17, 2002 . . Tube Rejuvination with a BK - how to. G05 transistor cross reference chart (probably helpful for other applications). Upped a wirewrap guide for you kids making prototypes.

July 01, 2002 . . Updated the Gauntlet Hacker's page with Andrew Wilson's Gauntlet to JAMMA page and added several Gauntlet FAQs which have been missing.

June 13, 2002 . . Updated the Welss-Gardner 6100 Vector Monitor FAQ & Guide to version 1.1. Electrohome G08 monitor FAQ is now updated to version 0.9

May 06, 2002 . . May 4 Superauction pictures are now up.

April 24, 2002 . . Updated the B&W monitor FAQ. Added a datasheet search 'engine'. There is an Amplifone HV Transformer design document, courtesty of Michael Kelley. Asteroids Revision 5 PCB schematics courtesy of John Robertson! Updated the Asteroids Technical Encylopedia with some notes from Phil.

April 01, 2002 . . More USA ROM conversions from Mark: Arkanoid Returns, G-Darius version 2, Gekirindan, Hat Trick Hero 95, Land Maker, Metal Black, Outfoxies, Space Invaders 95, Twin Cobra 2, Wise Guy.

March 28, 2002 . . Amplifone Vector Monitor FAQ version 1.2 added.

March 22, 2002 . . Updated the Assault Playfield viewer version and added a seperate link to the Vector Dream emulator in the Atari section. Added a Uniwatt transistor chart.

March 18, 2002 . . Ms. Pac-Man 'Ultimate Strategy' guide added. Soldam, Puzzle Bobble, Nemo, Gradius III and Mega Twins USA ROMs added. Updated the Space Invaders DX file to include proper code hacking for the US version. Thanks Brian!

March 11, 2002 . . Pictures from the March 9th Mesquite Superauction are posted. Sega vector ROM archive is up. Mark Spaeth's discussion on Ms. Pac fruit randomness.

March 5, 2002 . . Added a couple of vector monitor FAQs. March 1981 Gottlieb On Target added. Added Kai Fahrenkrug's Assault playfield viewer.

February 27, 2002 . . Slight site reformatting, and the Galaga '88 and Tank Force Japanese to English ROM conversion.

February 21, 2002 . . Added the manual for Mayday, and some pictures of a Cinematronics Sundance.

February 12, 2002 . . Need to do some Analog Signature Analysis with a Curve Tracer? Cinematronics sound/DAC for Stellar Castle/Space Fortress images. Gottlieb sound board Test Procedure added.

February 7, 2002 . . Asteroids cocktail page - back from the missing! Added a non-video ROM section. Static Ram cross reference. Black & White Vector Monitor FAQ Guide finally added!

January 28, 2002 . . Mayday and bootleg Defender pinouts - thanks Joe! Superauction pictures are up.

January 18, 2002 . . PAC-Man to JAMMA adapter information. War of the Worlds history as told by Tim Skelly. A multitude of Galaxian Hacks!

January 2, 2002 . . Lots 'o Japanese to Enligh ROM conversions: Mad Gear, G Darius, Go! Go! Mile Smile, In The Hunt, Magical Crystals, and the unencrypted Dynamite Dux ROM set. Giant Internet IC Masturbator! War of the Worlds conversion kit.

December 17, 2001 . . Blaster cockpit pictures! Robotron prototype cabaret pictures! 'Real' Robotron joystick shaft dimensions added. Halt circuit for Williams boards.

December 10, 2001 . . More Mesquite auction pictures. Additional Lunar Lander to Asteroids images. Andyr's Fingerboard FAQ. Centipede to Millipede conversion(s). Xevious files and mirrors are now up.

December 7, 2001 . . The glorious Entertainment Sciences web pages are up. Added Mark Spaeth's PAC-Man ROM fix.

November 20, 2001 . . Updated the Gottlieb technical page with the conversion manual for Curve Ball. Discs of Tron Schematics!

November 16, 2001 . . Weee, another failed power supply on my server. Mark F. was kind enough to send another Japanese to English ROM conversion for Darius Gaiden and Darius Gaiden, Extra. Also added the USA conversion for Kingdom Grandprix. Galaga rapid fire ROM, and some text on a Quantum cocktail.

November 1, 2001 . . FHMC Q*Bert marquee images and the Q*Bert cabinet paint codes. Also updated the Atari vector and raster production numbers.

October 30, 2001 . . Tempest Pincushion disable, Asteroids Deluxe color mod update. Matt Rossiter also sent me the info on replacing your Star Wars 25" picture tube.

October 22, 2001 . . Added Bubbles prototype ROM set and images of the PAC-Man countertop prototype. Mirrored the Asteroids technical Encyclopedia.

October 19, 2001 . . Added September 1981 and July 1983 Gottlieb On-Target newsletters.

October 17, 2001 . . Gottlieb On-Target newsletter section added. Linked the Battlezone non-scope conversion instructions. Rival Schools Unite By Fate USA ROM added, and the images from the October 13 Mesquite Super Auction. Put up the Gottlieb audio amplifier piggyback technical bulletin.

October 5, 2001 . . Mark sent in another Japanese-to-USA ROM conversion file, this time for Insector-X. Centipede 'Dux' ROM hack added. EFTPotRM to JAMMA conversion. Unreleased Sega X-Y Battlestar marquee image added.

October 2, 2001 . . Documentation on how to get sound in the attract mode of Tron. Discs of Tron light sequencing information and computer monitors for an arcade test bench application.

September 26, 2001 . . Woops, found a typo in the Battlezone ROM enhancements document. Updated that... Also added a fix for Assault joysticks.

September 24, 2001 . . Wico X-Y Pattern Generator ROMs and component sheet added.

September 21, 2001 . . A USA ROM conversion for Ray Storm. Thanks Mark!

September 19, 2001 . . Weee, a new DNS server and up after 24 hours! I'm adding some content I've had for a while, including Splat! ROMs, California Extreme 2001 pictures, Missile Command prototype image, Kurz-Kasch documentation, REAL Robotron joystick dimensions, and Wico X-Y Pattern generator schematics (thanks Dave!). More to come as I can find the time.

August 27, 2001 . . Posted auction pictures from the August 25th 2001, Mesquite Superacution.

August 9, 2001 . . Added a mirror of the Assault Homeworld web site. Also updated the technical data for the Space Invaders and Galaxian test ROMs (thanks Chris).

August 8, 2001 . . Added the Cinematronics and Vectorbeam ROM archive. Also added a page on the War of the Worlds Reproduction marquees. Added an english ROM for Elevator Action Returns for the Taito F3 system. Added a 'tips' page for Gauntlet. Added the IEEE Spectrum article and the Battlezone ROM enhancement text. Also added the Assault Stereo hack. Busy!

June 18, 2001 . . Added auction pictures from the June 16th Superauction in Mesquite Texas.

June 4, 2001 . . Added the Q*Bert sync inversion hack information to the Gottlieb page. Added the complete Gridlee package for download in the Gottlieb section

May 18, 2001 . . Added the Q*Bert bootleg ROMs to the Gottlieb page.

May 17, 2001 . . Added Paul Sommer's .pdf of 'How to Break a Million at PAC-MAN'.

May 16, 2001 . . Added additional Lunar Lander picts, Japanese to English ROM archive, and Tempest info. Also added Assault joystick hack.

May 15, 2001 . . Redesigned the main page layout. Added some updates to the Gauntlet Hacker's web page. Added this update page. Added the page on Lunar Lander to Asteroids Hack and subsequent Callan page. Added the Super Missile Attack information.