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Found 7 results

  1. From the album: Activision Patch Illustrations

    A digital art recreation of the Space Shuttle Pilot achievement patch offered by Activision.

    © Illustration by The Eyeball Mural, no rights reserved. Activision intellectual properties belong to Activision Blizzard.

  2. I wish there would be a patch for the Megaman homebrew on the Atari 2600. The boss is indestructible. The game is unfinished. I wish somebody could patch the Atari 2600 Megaman so that the boss can be destroyed and the game could be finished.
  3. Time for us to all play together! Anyone interested in playing Mouse Trap and winning the upcoming CBS Mouse Trap box and embroidered patch before everyone else? http://intellivisionrevolution.com/entries/intellivision-high-score-club/enter-the-mouse-trap-high-score-competition Have Fun! NOVEMBER 10 THROUGH 30 2013
  4. qnr

    Atari on ice

    From the album: My items

  5. AVP Hacking (some notes I wrote down years ago, think I might share them ...) Using the "official" ROM from 1993. Goal: Find out why Alien mode is deactivated. Activate Alien Mode in Menu. Maybe do a cheat for level select. Help: We know its there because someone (http://zenade.angelfire.com/AVP/lynx/avp.html) found out how to activate it by patching into memory as well as selecting the level nr. But this Cheat is not really telling where and how to patch ... 😞 We further know that it was possible to select the alien in the menu in older ROM versions. (which I do not have available...) Findings: Alien Mode is in and "just" deactivated in the menu. It can be activated and the item picture in the menu is appearing, too. There is some conditional branch before the picture is displayed. But it is not clear yet what is this condition... My guess: COMLYNX Mode! Comlynx? Indeed there is support for Comlynx in AvP! Just connect a second lynx and one player can select marine while the other is predator. But: It does not seem to work. At least not with my two Lynxes. Add: With three Lynxes every player gets adifferent character ... means the Alien pops up in the menu as expected. Investigating: First, extract files from rom. We get something like 200 file entries, but a lot of them are zero entries. File 0 is the title picture (as always). Trivia: It is not a single sprite but four, background, alien, vs, predator are seperate sprites. File 1: main code/basic fuction stays resident. File 2,3,5,7: menu and actual game ... swapped in at the same address as needed. File 2 contains Intro? File 3 contains the selection menu! File 5 is engine. File 7 contains the Game Over screen. Remark: switched pics??? Most of the other files are sprite data, but sometimes with some additional data (table?) in front of it. Lets concentrate on the file 3 and look for the menu selection part. And there it is... LDX $06 LDA #$00 L2E22: ORA $0A,X DEX BPL L2E22 BIT #$03 BNE L2E6B BIT #$10 ; Left/Right BEQ L2E46 LDA L2E7A ; CURRENT SELECTION DEC CPX #$02 ; And this is crazy... because x is always -1 here!! BPL L2E3B ; And this is crazy... if this should be cmp this makes more sence... but limits AND #$01 ; And this is crazy... the value to 0 and 1 for the selected character BRA L2E41 ; And this is crazy... L2E3B: CMP #$00 BPL L2E41 LDA #$02 L2E41: STA L2E7A ; Store selection BRA L2E5F L2E46: BIT #$20 ; Left/Right BEQ L2E5F LDA L2E7A INC CMP #$02 ; And this is crazy, too ... must be CPX as above?? BPL L2E56 ; And this is crazy, too ... doesnt make sence AND #$01 ; And this is crazy, too ... BRA L2E5C ; And this is crazy, too ... L2E56: CMP #$02 BMI L2E5C LDA #$00 L2E5C: STA L2E7A ; Store selection L2E5F: LDA L2E7B ; Animation of Frame or similar? INC AND #$03 STA L2E7B JMP L2DBF ; The following is interesting, too L2E6B: LDX $07 LDA L2E7A STA $10,X STA $AD JSR $058e JMP $1822 ; And if we check a bit of code before, we find the following ; This is run when we first enter the menu... LDX $07 TXA STA $10,X STA L2E7A What do we learn from this? a) there is a bug in the avp code b) selection can be 0,1,2 BUT ther is this CPX on something which limits this to 0 and 1 (alien is 2!) c) on start this value is read from $07 Some very nice piece of code is: LDX L2E7A LDY #$07 LDA L2D88,X STA ($AB),Y LDY #$09 LDA L2D8B,X STA ($AB),Y LDA $AB LDX $AC JSR $056e this code is plotting the selection frame ... based on a three entry look-up table. three characters! We learn: L056E is plotting a sprite! looking where it is used will find an additional piece of code which draws one sprite only under a condition: LDA $06 CMP #$02 BMI L2DE4 LDA #$b0 LDX #$52 JSR $056e L2DE4: What sprite is it? yes, the alien head for the menu. (not shown: right above that was the plotting of marine and predator) What do we learn? Based on the value of $06 the alien head is (not) shown in the menu. The same value is used on some loop above the selection code to OR some values which are tested for left/right. What does this mean, why do we want to make an OR if we have only one Lynx... and why is all this keypad reading and storing (not shown at all) done so terribly complicated... based on some indizes... could it mean...yes indeed!!! Checking the main code result in a lot of SERDAT occurances... means: COMLYNX code!!!! => a short check with two Lynxes, yes we have comlynx support. And the complicated code for selection "just" synchronizes the selection between two(?) Lynxes.
  6. Welcome to the Mouse Trap High Score Competition! November 10 through 30 2013 Prizes to be awarded to the top scoring participants including custom Mouse Trap embroidered patches , and a special CBS Mouse Trap reissue prototype box to the top scoring player! MOUSE TRAP This unusual maze game puts you in control of a mouse who must be guided through a labyrinth of doors and corridors. As it foes, the mouse eats cheese bits and tries to avoid the ravenous cats. At times, the mouse can transform into a dog and go after the cats! A secret tunnel also provides escape. And you can even open or close groups of doors to change the maze and get the mouse through. SUBMIT YOUR TOP SCORE HERE TO ENTER THE COMPETITION! Official Rules and Prizes MOUSE TRAP HIGH SCORE COMPETITION OFFICIAL RULES AND PRIZES RULES High Score on Skill Level 1 Competition is for the top scores for the Intellivision release of Mouse Trap Game can be played on original Intellivision consoles or Emulation on PC Players can submit a photo or screen capture or a video of the top score Players must submit their top score on the official entry form on this website Players are encouraged to use an online photo service to submit entry photos Entry into competition does not guarantee a prize The competition starts on November 10 2013 and ends on November 30 2013 Any entries after November 30 2013 will not be entered Winner's name and address must be made available for receiving prizes Competition is for high score only, no certain board needs to be reached No other console or arcade versions of Mouse Trap will be entered No charge required for any prizes given Have fun! PRIZES The top 5 scores will receive a custom embroidered Mouse Trap patch The HIGHEST scoring player will receive the patch AND a special CBS Mouse Trap Prototype box May the best player win!
  7. Looking for the following Activision patches for the Atari VCS/2600 in new condition: Barnstorming Decathlon SILVER & GOLD Dolphin Grand Prix H.E.R.O. Ice Hockey Keystone Kapers Megamania Pitfall Pitfall II Plaque Attack Private Eye River Raid Robot Tank CROSS & STAR Seaquest Space Shuttle BOTH Starmaster STARMASTER Tennis Thanks for reading till the end
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