Knowledge Base
/kb_dl.aspx/KB/gamemanuals/stern/video9.tiff
generator and it is enabled when its J pin (2) receives a logic 1. The FF is clocked by vertical sync signal V16. The rising edge of V16 will bring the Q output (pin 6) of 3E to logic 1. This level is inverted by open collector inverter 2D (pins 1,2,3), and asserts the NMI* line to the processor. The processor will now jump to location 0066 and execute the NMI routine stored there. The jump to 0066 is an inherent hardware feature of the Z—80. The Q* output of the flip flop 3E is delayed by R16 and C5 and th
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Understanding MAME Drivers Volume 1: Data Structures v1.0
Original URL: http://atarihq.com/danb/files/mamedrv1.txt Understanding MAME Drivers Volume 1: Data Structures v1.0 by Daniel Boris Table of Contents 1.0 Introduction 2.0 /drivers/rockola.c 2.1 GameDriver Structure 2.2 MachineDriver Structure 2.3 ROM Definition 2.4 MemoryReadAddress Structure 2.5 MemoryWriteAddress Structure 2.6 Input Ports 2.7 GfxDecodeInfo Structure 2.8 GfxLayout Structure 3.0 Linking in the Driver 1.0 Introduction The purpose of this document is to help
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/kb_dl.aspx/KB/gametech/boris - understanding mame drivers 1.html
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Understanding MAME Drivers Volume 2: VIDHRDW
Original URL: http://atarihq.com/danb/files/mamedrv2.txt Understanding MAME Drivers Volume 2: VIDHRDW by Daniel Boris Table of Contents 1.0 Introduction The purpose of this document is to help people understand how a MAME driver works and to help people who may want to write their own MAME drivers. A driver is a set of files that are part of the MAME source that define the operation of a specific arcade game. For this document I will be describing the video section of the driver for
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Crazy Climber Memory Map
CRAZY CLIMBER HARDWARE DETAILS AND MEMORY MAP by Lionel Theunissen. 08/01/97) Please don't take any of this information as gospel. This is what I have gleaned from my analysis of the CC ROMs and circuits, and I could be wrong about a few things. Some of it is best guess, but most of it should be correct. Bear in mind that it was quite a while ago (3 years) that I was originally working on this, so coming back into it I'm a little fuzzy on details. VIDEO: The video circuitry for Crazy Climber is
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/kb_dl.aspx/KB/gametech/crazyclimbermap.html
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/kb_dl.aspx/KB/datasheets/65816/scnfrmt.txt
[Image]
SNES Screen Format
[Image]
SNES GRAPHICS INFO FILE V1.0
----------------------------
By DAX on 28/2/93
This is a short text file on how the data for the gfx on the SNES are
set up..
Everything is based around an 8x8 pixel 'Tile' and thinking in terms of
tiles makes the whole thing a lot easier.
4 Colour mode - 2 Bitplanes
---------------------------
If you split the screen into 8x8 pixel tiles, the order of the g
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/kb_dl.aspx/KB/datasheets/65816/scnfrmt.txt
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Phoenix Memory Map
Newsgroups: rec.games.video.arcade.collecting Subject: PHOENIX reeng. Date: 26 May 1996 23:46:41 GMT Organization: University of Karlsruhe, Germany Lines: 218 Message-ID: <4oaqh1$psd@nz12.rz.uni-karlsruhe.de> NNTP-Posting-Host: rzstud2.rz.uni-karlsruhe.de Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit NNTP-Posting-User: ub2f X-Newsreader: TIN [version 1.2 PL2] Hello Folks, I recently took a closer look at the PHOENIX schematics for repair purp
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/kb_dl.aspx/KB/gametech/phoenixmap.html
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Williams Hardware Description
The older Williams games (Defender, Stargate, Robotron, Joust, Bubbles and Sinistar) have very similar hardware inside. These machines have five PC boards: CPU/Video- the main board, containing the CPU, RAM and video circuits The game CPU is a Motorola 6809E. There are 24 4116 RAM chips, giving 48K of DRAM, most of which is used for the video display (38K). There is also a 1K by 4-bit CMOS SRAM that is battery-backed-up. This retains the game configuration and high scores when the power is off.
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/kb_dl.aspx/KB/gametech/williamshwdescription.html
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Converting Schematics to an Emulator V1.2
Original URL: http://atarihq.com/danb/files/zarzon.txt Converting Schematics to an Emulator V1.2 by Daniel Boris (dboris@erols.com) 5/9/98 Table of Contents 1.0 Introduction 2.0 Zarzon Hardware 2.1 Introduction 2.2 Processor 2.3 Memory Map 2.4 Roms 3.0 Video Section 3.1 Video RAM 3.2 CRT controller 3.3 Video Shifter 3.4 Color Selector 3.5 Putting all together 4.0 Sound (to be added later) Appendix 1: Converting Binary to Hex 1.0 Introduction The purpose of
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Robotron `Enforcer bug'
Submitted by Franklin Bowen (tfbowen@ingr.com)
For those of you who don't know what the Robotron `Enforcer bug' is:
The enforcer bug is when an enforcer is in the lower right corner and you shoot it diagonal there is a 1 in 3000 chance the game will reset. The reason for the game resetting is there is a bug in the diagonal explosion code for enforcers. The memory below the screen hold the stack and an unclipped pixel can get 'drawn' into the stack cause the game to lock and the watchdog to kick in
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/kb_dl.aspx/KB/gametech/robotronbug.html
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/kb_dl.aspx/KB/gamemanuals/stern/video4.tiff
Input line 3 is connected when B and A are 1 (code 11). Input line 2 is connected when B is 1 and A is 0 (code 10). Input line 1 is connected when B is 0 and A is 1 (code 01). Input line 0 is connected when B and A are 0 (code 00). The foregoing information applies to both sections. Thus, for code 11, the first section connects to its “3” input (DO on the schematic) and similary the second section connects to its “3” input (Dl on the schematic). Pins 1 and 15 (strobe lG* and 2G*, respectively), are provided
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/kb_dl.aspx/KB/gametech/robobug.txt.txt
Subject: Williams: Joust ROMs correction & Robotron bug detailed info
Date: Mon, 30 Jan 95 10:15:26 EST
Joust: Red & Yellow *HAVE* the `Pterodactyl trick/bug', Green does NOT!
For those of you who don't know what the Robotron `Enforcer bug' is:
The enforcer bug is when an enforcer is in the lower right corner and
you shoot it diagonal there is a 1 in 3000 chance the game will reset.
The reason for the game resetting is there is a bug in the diagonal
explosion code for enforcers. The memory below the s
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/kb_dl.aspx/KB/gametech/robobug.txt.txt
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Arcade Game Cheats
--- 720 --- (Contributor: unknown) In the ramp section, levels 8, 9, and 10: holding down the kick and jump buttons simultanously on the lip of the ramp will boost your air. This trick only works when you're going the correct speed (usually your third or fourth jump), and only once (as far as I can tell) per ramp session per level. ----------- Afterburner ----------- (Contributor: Anthony D. Chen) key: S - start button V - vulcan cannon M - missle F - foot sensor (only on sit-down version) stag
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/kb_dl.aspx/KB/faqs/faq-arcade cheats.html
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The Sega Out Run FAQ Version 0.3
Maintained by Chris White Andrew W. Sharples This FAQ may only be reproduced with permission, and must not be edited, altered or modified in any other way. WWW and TXT formats available from : www.diamondblack.demon.co.uk # As the case is with all FAQs, this document is a work in progress. # # Additions, corrections, and comments are very welcome. # [What's New] Version 0.3 - 7th February 1998 * Added : Machine S
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/kb_dl.aspx/KB/faqs/faq-sega outrun.html
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Hyper Fighting: Ken Strategy Guide
**************************************************************************** ** ** ** # # # # ### #### ### #### # ### # # ##### # # # ### ** ** # # # # # # # # # # # # # # # # ## # # ** ** #### # ### ### ### ### # # ## #### # # # # # # ## ** ** # # # # # # # # # # # # # # # # ## # # ** ** # # # # #### # # # # ## #
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/kb_dl.aspx/KB/faqs/faq-sf2 hyper (ken).html
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/kb_dl.aspx/KB/historical documents/atari games vaxmail/vax89.txt
Atari/Atari Games VaxMail 1989 Jed Margolin
___________________________________________________________________________
From: KIM::HALLY 3-JAN-1989 09:01:01.61
To: DENCKER,RAY,HALLY,ROTBERG,BURGESS,MARGOLIN,COMSTOCK,NOBLE,MOSER,DIEKNEITE,FULLER,GROSSMAN
CC:
Subj: S.T.U.N. TEAM
last update: 1/3/89
Project: S.T.U.N. RUNNER (571)
Planned Field Test: FEB. 89
Planned Finished Goods Assy. JUNE 89
Project Leader: MIKE HALLY
Programmer(s): ED ROTBERG
ANDY BURGESS
Engineer: JE
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/kb_dl.aspx/KB/historical documents/atari games vaxmail/vax88.txt
Atari/Atari Games VaxMail 1988 Jed Margolin
___________________________________________________________________________
From: MIKE::LIEBSTER 4-JAN-1988 14:39:28.82
To: @SYS$MAIL:EVERYBODY
CC:
Subj: PAYMENT OF CONSULTANTS/CONTRACTORS
STARTING THIS YEAR WE WILL BE PAYING CONSULTANTS AND CONTRACTORS THROUGH
PAYROLL INSTEAD OF ACCOUNTS PAYABLE. THIS WILL ALLOW US TO AUTOMATICALLY
KEEP TRACK AND GENERATE YEAR-END 1099 INFORMATION.
THIS WILL APPLY TO ALL CONTRACTORS OR COMPANIES THAT ARE NO
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/kb_dl.aspx/KB/historical documents/atari games vaxmail/vax91.txt
Atari/Atari Games VaxMail 1991 Jed Margolin
___________________________________________________________________________
From: GAWD::MCCARTHY "Pat" 2-JAN-1991 12:37:15.74
To: @SYS$MAIL:JUNK
CC: MCCARTHY
Subj: New employee.
If you haven't already noticed or been introduced, we have a new
employee starting today.
His name is John Moore. He is a hardware design engineer in the
Electrical Design group, reporting to me. His office is the corner
cubicle just outside my office.
Drop by and say Hi.
_____
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/kb_dl.aspx/KB/historical documents/atari games vaxmail/vax86.txt
Atari/Atari Games VaxMail 1986 Jed Margolin
___________________________________________________________________________
From: ERNIE::GRAHAM 2-JAN-1986 10:21:33.70
To: @SYS$MAIL:JUNK
CC:
Subj: ATARI GAMES 401-K PLAN
John Klein asked me to put the following memo out on junk mail:
TO: All Employees
FROM: John Klein/Dennis Wood
We are quite pleased to report that our 401-K Plan has gotten off
to an excellent start. As of today we had 118 employees making
contributions to the Plan.
We encoura
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/kb_dl.aspx/KB/historical documents/atari games vaxmail/vax90.txt
Atari/Atari Games VaxMail 1990 Jed Margolin
___________________________________________________________________________
From: BERT::LTURNER 2-JAN-1990 15:43:12.18
To: @SYS$MAIL:EVERYBODY
CC: LTURNER
Subj: New Baby
This is to annouce the arrival of a new addition at the
Moore house. His name is Evan Alexander Bettencourt Moore.
He was born on Saturday, December 30, at 10:21A.
Weight -- 7 lbs 10 oz
Height -- 20 1/2 inches
Mother and baby are home and doing well.
_____________________________
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/kb_dl.aspx/KB/historical documents/atari games vaxmail/vax92.txt
Atari/Atari Games VaxMail 1992 Jed Margolin
___________________________________________________________________________
From: BERT::FRANCES 2-JAN-1992 17:56:52.97
To: MARGOLIN
CC:
Subj: PHONE MESSAGE
DAN ASH 879-3037 10:27AM
NEW 2101 MATERIAL HAS NO BUGS. CALL MARGO FOR MORE INFO.
___________________________________________________________________________
From: BERT::BROWN 3-JAN-1992 19:39:22.02
To: @SYS$MAIL:EVERYBODY
CC: BROWN
Subj: PREMIUM PAYMENT PLAN, MODIFIED CAFETERIA PLAN
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