Jump to content
Have You Played Atari Today?
2600|5200|7800|Lynx|Jaguar|Forums|Store  

nanochess

Members
 View Profile  See their activity

  • Content Count

    6,419

  • Joined

  • Last visited

  • Days Won

    19

Posts posted by nanochess

  1. Posted

    by the way, I have 1 fully operational colecovision ... and another that operates but will only run 32k cartridges. If I put in the Ultimate multicart or a megarom cart it will not run. Multicart gets the splash screen and then goes blank. It seems to have problems with the bank switching. Just wondering if anyone has a suggestion .. other than blowing into the cartridge slot.

    Why not to take detailed pictures of both mainboards? and open another thread to publish them, it could be a PCB variation or simply that there is some different slower chip in your non-working Colecovision.

  2. Posted

    Just for the records: I also edited the ROM with the two first suggested amendments. The first made the radar flash only now and then, the second was perfect. Thank you for this great patch! I had in mind to upload the patched ROM but I see many things happened over the weekend and that it's no longer necessary.

    That's great.

    Is that correct what I guessed by other posts, that is that PAL Colecovision units run the games 1/6th slower than NTSC units? :?

    So far it looks like every Coleco standard release just runs slower in PAL.

     

    For homebrew releases PkK has commented that he checks the 50hz/60hz byte to change speed accordingly, I do same in my games, so music and gameplay are unchanged between PAL/NTSC.

  4. Posted

     

     

    And I'm sure probably dozens of people just like you passed over it too. Don't feel too bad.

    No, I'm not feeling bad. Just somewhat surprised that I've touched it! (I couldn't recognize the type of PCB at that time because I never had an Atari!!!)

     

    Anyway thanks. We have a proverb that when something isn't for you, you simply cannot get it.

     

    I've been watching carefully that flea's market and some others. And maybe with a little of luck... :)

  6. Posted

    Some two or three years ago I saw a little blue box with a handle in top it had a damaged label, I took it for a calculator part. This was in a flea's market and I didn't bought it.

     

    So previous year when I finally started buying Atari and learning to recognize carts, well, I got astonished when I saw the pictures. I can only say holy shit! I missed a one very interesting cartridge for mere 8 dollars.

  7. Posted · Edited by nanochess

    Well, I just have gave a look to Super Cobra and the problem is that Konami made a whole mess in RAM memory access.

     

    You know the Colecovision has 1K of memory repeated over 8K $6000-$7FFF, if you access $6000 is exactly the same if you access $7000.

     

    But in ADAM, the $6000-$7FFF zone has independent 8K of RAM, so when Super Cobra tries to find data it fails miserably because it uses $6000-$63ff and $7000-$73ff sparely.

     

    This would need a complete analysis to relocate every single instruction wrong o.O! Maybe if I work in small blocks by week... I don't promise anything, it's a horribly complicated job with big chances to insert bugs.

  8. Posted

    You guys rock! :D

     

    If I remember correctly, Super Cobra is the only other CV game that doesn't work on the ADAM. I haven't tried it and I'm not sure what's wrong with it, but if it could be fixed, then we'd have a complete collection of commercial CV games fully compatible with the ADAM. :)

     

    EDIT: There's no PAL problem with Super Cobra, is there?

    Really it also doesn't work? someone could give some light on this?

  9. Posted

    Unbelievable :)

     

    I'm live in Denmark and we have the PAL tv system.

    My CBS ColecoVision is an French version with the Euro connector. (RGB).

     

    I've had 4 different ColecoVisions before this i have now.

    Defenders radar has never worked on some of them.

     

    I have the AtariMax Ultimate SD Cartridge, and Defenders radar works nor on the SD.

     

    So I'd like to propose a toast to nanochess for the code, and NIAD for the final ROM. :-D

    It works now perfect on my PAL CBS ColecoVision, and also the Smart bombs.

     

    Just need someone to burn it on a loose PCB. :)

     

    I can say that almost ColecoVision games produced for our ColecoVision is exactly the same ROMs.

    i.e. US ROMs, just changed cartridge shells, labels box and manuals.

     

    This makes the game running slower, as well as melodies and sounds also runs slower.

    A real PAL game will not slow this down.

    And finally, no 3rd. parties games was ever sold officially in Denmark.

    And no ADAM Computer either. (Being advertised on it, and the price was in 1984/85 set at DKR 10.600,- ).

    I'm glad you could test it on your PAL Colecovision.

     

    By the way, each of my games Zombie Near, Princess Quest and the future Mecha Eight are ready for PAL consoles so music doesn't slow down.

  10. Posted · Edited by nanochess

     

     

     

    Thanks for working on this. I can now play Defender on my Coleco Adam. I used the Hex editor you posted and made the changes to the ROM. I loaded the new Rom onto the Atarimax CV Ultimate SD cartridge and played a few short games on my Adam. It works great. Only one small exception, when the "game over" screen is displayed the game makes a lot of weird noises until the title screen is displayed again.

    I was pretty surprised by this.

     

    So I've checked your dump and you missed three bytes between $0552-$0554 in a way that put weird sound bytes at GAME OVER.

    Thanks for putting your dump, otherwise I would have been searching for a ghost :)

     

    But fortunately NIAD dump is right :), so everyone enjoy it :).

  11. Posted · Edited by nanochess

    This patch detects automatically if there is a PAL Colecovision and adds delay, but not for NTSC :)

     

    Also added delay to solve bug with controllers in Coleco ADAM (not tested, but it should work)

     

    If anyone publishes a patched ROM, please DON'T give me any credit. It is only my little contribution to the community.

     

    Address

    Original byte

    New byte

    $000C = $00 -> $3A

    $000D = $00 -> $69

    $000F = $00 -> $FE

    $0010 = $00 -> $32

    $0011 = $00 -> $20

    $0012 = $00 -> $08

    $0013 = $00 -> $01

    $0014 = $00 -> $BA

    $0015 = $00 -> $01

    $0016 = $00 -> $0B

    $0017 = $00 -> $78

    $0018 = $00 -> $B1

    $0019 = $00 -> $20

    $001A = $00 -> $FB

    $001B = $00 -> $C3

    $001C = $00 -> $75

    $001D = $00 -> $DD

    $0172 = $75 -> $0C

    $0173 = $DD -> $80

    $020F = $3E -> $D3

    $0211 = $D3 -> $E3

    $0212 = $80 -> $E3

    $0551 = $3E -> $D3

    $0553 = $D3 -> $E3

    $0554 = $80 -> $E3

    $074D = $00 -> $E3

    $074E = $00 -> $E3

    $2FEB = $3E -> $D3

    $2FEC = $80 -> $C0

    $2FED = $D3 -> $E3

    $2FEE = $C0 -> $E3

    $3019 = $3E -> $D3

    $301A = $80 -> $C0

    $301B = $D3 -> $E3

    $301C = $C0 -> $E3

    $304B = $3E -> $D3

    $304C = $80 -> $C0

    $304D = $D3 -> $E3

    $304E = $C0 -> $E3

    $306D = $3E -> $D3

    $306E = $80 -> $C0

    $306F = $D3 -> $E3

    $3070 = $C0 -> $E3

    $324F = $3E -> $D3

    $3250 = $80 -> $C0

    $3251 = $D3 -> $E3

    $3252 = $C0 -> $E3

    $327F = $3E -> $D3

    $3281 = $D3 -> $E3

    $3282 = $80 -> $E3

    $32B0 = $3E -> $D3

    $32B2 = $D3 -> $E3

    $32B3 = $80 -> $E3

    $32C7 = $3E -> $D3

    $32C9 = $D3 -> $E3

    $32CA = $80 -> $E3

    $32D6 = $3E -> $D3

    $32D8 = $D3 -> $E3

    $32D9 = $80 -> $E3

    • Like 3

  12. Posted

    Defender doesn't work right on a standalone Coleco Adam either. Pressing "up" on the joystick doesn't work and the right side fire button (for smartbombs) doesn't work. Everything else seem to run fine.

    This trigered my curiosity and I gave another look. The original ROM doesn't have waiting time between selecting joystick/keyboard ports, so that could be the problem.

  14. Posted · Edited by nanochess

     

     

    so they are sold out currently or forever?

    Check the updated list (the first post), I've been editing it recently. Several Pixelboy games are being re-released (marked with BATCH) and others are permanently sold-out.

     

    Pixelboy has said that he always makes 150 boxes (the minimum required by printer company) for each game and does batchs between 75 and 100, so there is a chance that re-releases can be done, except when there are no more boxes.

     

    By the way, I've updated again the list (SEE POST #1) though Princess Quest (that's mine :)) and Thexder for SGM are new, the 75 original copies for each one have been sold-out and he is taking note of interest for another batch.

  17. Posted · Edited by nanochess

    I leave the work to publish a modified ROM to someone else :) (I'm pretty new to this forum and I don't know if the rules allow it)

     

    Just download the Defender ROM file from somewhere in the net, download a hexadecimal editor an apply the patch on the addresses I've marked.

     

    It looks like this hexadecimal editor can do the job http://www.chmaas.handshake.de/delphi/freeware/xvi32/xvi32.htm

  18. Posted

    I gave a look to Defender. This happens because the PAL VDP has a larger retrace time and it updates its sprite table too early so the radar doesn't appear on screen.

     

    Patch following ROM locations:

     

    $0172 = $0c

    $0173 = $80

    $000c = $01 $80 $00 $0b $78 $b1 $20 $fb $c3 $75 $dd

     

    It works in my private emulator in PAL mode, of course the real test would be over a PAL Colecovision.

  19. Posted

    Mr chin and Mario Bros is still available on the SD multicart for the colecovision. Is Mr Chin the same on the sdmc as the actual cart? I believe that MB is a different version. Aren't there several versions of MB, and the upcoming re-release is also different? Is there a way we can mention versions?

     

    and BTW, thanks for making this list:)

    Thanks for pointing it. I think Mario Bros has different colors for each cartridge, so that should be enough. It looks like the latest release from retroillucid will be green and will include other sounds.

  23. Posted

    I would recommend a Japanese MSX (just make sure it is not modified to European) because them have composite NTSC output as standard and accept 110 V.C.A (the better for USA), I don't think RF would work because it is for Japanese Channel 1 and 2.

     

    If you want to play every MSX game the better is a MSX2+ as it includes video V9958 (enhanced V9938, better scroll for Space Manbow) and FM sound by default (the FM-Pac cartridge is pretty expensive), almost every model includes 128K video RAM and look for models with 128K base RAM, although generally expanded to 256K (Sony) and 512K (Panasonic).

     

    The floppy disk drive is a must to load most MSX2 games available online (test Sonyc, it sounds and plays great). Also I remember there is a Flash cartridge at http://www.msxcartridgeshop.com

     

    Myself I have a Sony HB-F1XDJ (MSX2+) and it was pretty well manufactured, even the stickers still are attached :), only some external scratches and I had to replace two capacitors that dried in FM sound.

     

    Other recommendation: check eBay, visit msx.org, give a look at retroclasificados.com. There is a price anarchy, always ask for photos.

    • Like 1

  24. Posted

    IMO Gulkave was a little too hard (really needed a Smart bomb to help on the super hard screens)- but still loads of fun as ship speed and size was spot on, Star Force was perfect (ship speed, ship size, double shot weapon, etc.) Sky Jaguar ship moved too slow, hence c7ould not get into the game

    Indeed Gulkave is hard, I played the SG-1000 version a while ago and barely I could finish first level, but looks like you get the "touch" and is easier later.

    Does Mecha-8 have a Smart bomb type weapon? i.e. blow up all the bad guys on the screen

    It has a "devastator" weapon that charges itself shooting enemies :), similar to a Smart bomb and useful for tough bosses and when there are lots of enemies.

  25. Posted

    Mecha-8 looks great once thing I was wondering is if the size of the main character causes him to get get hit more. Would a slightly smaller Mech be better?

    Though its big size with skilled guide and the power-ups you can escape from a lot of bullets.

     

    Also you've an energy bar so the first hit doesn't destroy you immediately.

     

    Although of course you've to "clean" the screen from enemies, otherwise the rain of bullets will do its job ;)

AtariAge
Forums
Store
General
Follow AtariAge

Copyright ©1998-2021 AtariAge

×
×
  • Create New...