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CrazyImpmon

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Posts posted by CrazyImpmon

  2. Posted

    Top side

    Bottom

    (images are about 320K each, 1280x960) (Sorry I couldn't use my scanner, anything more than 2mm off the glass would come out blurry)

     

    The label on my 32-in-1 was so thick the whole thing came off easily so I can restore mine as if it was never opened.

     

    It does look like a DIP switch selector can be done. I may not even need to tear apart my game to trace all the lines and make schematic. One of the chip is a CMOS 4024 (7 stage ripple counter)

     

    4024, 744024

7-bit asynchronous binary counter with reset.



    +----------+

/CLK |1  +--+ 14| VCC

.RST |2       13|

 Q6 |3       12| Q0

 Q5 |4  4024 11| Q1

 Q4 |5       10|

 Q3 |6        9| Q2

.GND |7        8|

    +----------+



[This information is part of the GIICM]

     

    I've misplaced my multimeter once again :( so I can't really verify this but this is my best guess tracing:

     

    Q0 goes to pin 2 of the ROM

    Q1 to pin 21

    Q2 to pin 26

    Q3 goes under the chip and may be going to pin 27 or 28

    Q4 goes under the chip and probably goes to pin 1

     

    I will try to remove the chip and install a DIP switch from +5v to the pin with a 47K pulldown resistor to ground and see if that lets me manually selects one of 32 games. (47K is used with EPROM multicart but should work with ROM version)

     

    The other chip is a 7414 hex inverter/schmitt trigger.

     

    I don't have the 128 in 1 but if it's the same as 32 in 1, the same could be used with additional 2 switches and 2 resistors to replace the Q5 and Q6 of the ripple chip.

     

    Soldering iron- check

    desoldering braid- check

    8 pos dip switch- check

    small proto board- check

    solder- check

    wires- check

    5x47K resistor- check

    sanity- no go. :D

  3. Posted

    I just went through my entire 2600 last night to figure which are dups and such. I came up with almost 200 dup carts to get rid of. Most are Atari or Sears, 1 to 3 in rarity. About quarter of the lot has screw holes or other major label damages.

     

    I'll post a list later when I get around unless someone wants most of the carts. Perhaps for making homebrewn games with recycled shells?

  5. Posted

    The true heavy 6 switcher is the one with unusually thik shell on the bottom. You can tell without opening the case: look on the top left or right side. A normal 6 switcher is thin on the side, heavy 6 switcher is about 1/4" thick on the side.

     

    I have 1 Atari and 1 Sears heavy model and they could almost pot XBox to shame. :D :D

  6. Posted

    I had a couple strange experience that has never happened since then.

     

    First one is Maze Craze. One game, one of the enemy player somehow was twice as big as normal and remained stationary right at the end. A no win game. :P

     

    Another one was in Yars Revenge. During the explosion scene, the explosion stopped shrinking at half way but the color continued cycling and I was still able to move Yars. There wasn't anything I could do but to watch the pretty flashing colors, move Yars around, or turn off the 2600.

  7. Posted

    I have never seen Cloak and Dagger. If it weren't for Tempest I doubt I'd have even heard of the film.

     

    Go find and rent it. Like Wizard, it's all one big advertisement for Atari. But it is a bit more fun than Wizard. Also a bit darker as there's some actual murders.

     

    Does anybody know if Cloak & Dagger is ever going to come out on DVD? Then we can get a much better shots of all the Atari boxes in the movie.

     

    I wish I knew, I've posted in alt.video.dvd to see if anyone there knows.

  8. Posted

    Anyone know fo a schematic to convert some 7800 game board to accomodat ean EPROM chip? I have a couple extra 7800 games that have been taken apart: Ballblazer (with POKEY chip) and Dark Chamber (with everything but the pokey)

     

    Also does anyone know what the jumpers are for on some larger 7800 games? Bankswitching schemes?

  9. Posted

    Yes it is, and it worked great with a few games on 2600 like Missle Command, Reactor, Centipede, etc. Basically anything that's single screen and you move your character around. There isn't really many games for 7800 that can be used but I've tried Centipede and Xevious.

     

    One thing to keep in mind: the 2 fire buttons on Sega controller isn't wired the same way as 7800 controller. You'll only be able to use one button like a regular 2600 controller or you could mod the trackpad to work correctly as 7800 2 button controller.

  12. Posted

    I'm also with Vinnie and others about 7800.com. While I would have liked to get the 7800 version of Klax and possibly the Sentenial and Mission Impossible, $45 is a bit too much for a game that can be readily found elsewhere for less.

     

    If the games were truely original and new, I would probably have paid the full $45 without question but for recycled/reprogrammed games in 7800 case, forget it.

     

    Sorry. I'd sooner get an EPROM burner and a few compatible 7800 games from O'Shea and do it myself than to pay that much. $20 would probably be my limit on these "new" games 7800.com is offering right now.

  14. Posted

    That's funny I was just sorting my big box of unsorted games I picked up in the past year. I came up with 11 duplicate 7800 games:

    Asteroids

    Ballblazer (grey end label)

    Centipede

    Choplifter

    Dark Chambers

    Desert Falcon

    Dig Dug

    Donkey Kong Jr.

    Galaga

    Karateka

    Xevious

     

    All of the cart has end label intact, no screw holes or major label damage. They all are in VG shape. Make a good offer and all's (or some) yours. I'm in Michigan, USA BTW.

     

    Now to find my old 2600 game list so I can find which one of the 200 or so 2600 games I picked up are duplicates, label upgrade, or anything.

  15. Posted

    Has anyone figured out how to hack the 32-in-1 cart to have switch for selecting games? I don't want to keep flipping the power switch just to look for one game.

     

    I' thinking there's a random address generator somewhere that selects one of the 32 games. All 2K games IIRC so it'd be a 64K ROM with some upper address line randomized at power up.

     

    If someone could figure the line random and a way to disable them in favor of DIP switches (5 switches should be enough)

  16. Posted

    I haven't tried the 5200 Basic yet but I've done some odd BASIC tricks in my time. Take for example you might have a lot of if-then statements, each with goto or gosub to different part. THe one trick I did was to combine all if/then/goto in one line by doing this:

     

    z$ would be a variable inputted by user

     

    on (1*(z$="yes")+2*(z$="no")+3*(z$="maybe")+4*(z$="")) goto 10,20,30,40

     

    This worked for C64.

  18. Posted

    An easy way to add extra function would be to add an extra port with connection for reset (and game select too!) and then build that dream controller of your with a forked connector at the end. One end would have standard 9 pin connector got joystick part and other end would fit into the extra connector for extra function.

  22. Posted

    To get to the minus world, you need to get tothe end of world 1-2, break block 2 and 3 away from the pipe in the ceiling (do not break the one next to the pipe)

     

    This will take some trial and error but if you can jump just right, Mario will pass through the one block and end up in front of the pipe. Scroll onward and immidiately drop in the warp zone pipe.

     

    The reason the screen shows the world as "-1" is because a pointer to world number wasn't set so you get a blank space in place of the world number, thefore it reads as " -1". And since it's not a valid pointer, you get into a strange new world which has no ending. Yes, I've tried using Game Genie for unlimited time and lives, gave up after about 20th time through the same watery world. My guess is that the pipe at the end of that world doesn't have any pointer programmed in (since it's not a valid world to begin with), it warps you to the begining of the minus world.

     

    There is also a warp zone at the end of 4-2 but I haven't tried to see if this trick would also work.

  23. Posted

    Cute... :D

     

    And I thought Intellivision operated as 12 bits or something odd even though it had 16 bit processor.

     

    And yes there can be a game on 4 bit processor. Turn your $2 calculator upside down and see how many words you can get from the numbers. One example would be 0.7734 (which would read hello when read upside down) I know not much but it does exists. ;)

  25. Posted

    There are still many great games on Lynx that GBA still don't have. But GBA can play just about any older GB and GBC games so when you get a GBA, you have an access to a library of over 2000 USA games. (I don't know how many Japanese title exists but could be in the 4K range)

     

    There's no region lockout so GBA can play anything from anywhere in the world.

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