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Defender_2600

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Posts posted by Defender_2600

  3. Posted · Edited by Defender_2600

    Wow, fantastic! Bob, you're amazingly fast! :) I hope you can solve the problem of those 2-scanlines.

     

    Meanwhile, I have prepared a graphical update for you, it is really cleaner and accurate (mock-up below).

     

    About the score, if you still have Maria / CPU time, maybe you could try to increase the vertical resolution of others 8 lines (for example, 7800 Water Ski and Tank Command both have the total height at 224 lines).

     

    Again, thanks so much Bob!

     

     

    post-29074-0-43615200-1528517309.png

     

    post-29074-0-47093200-1528517249.png

    • Like 5

  6. Posted

    Great progress, I am impressed! Bob, as usual, you leave me speechless! :love: :)

     

     

    First attempt at the Pinball playfield...

    attachicon.gifPinball.png

     

    I don't think I'm going to do the other graphics like the baby, monsters, fruits, etc. I could use the colors, tile space, etc.

    But remember, this is going to be in 160A mode, so it will be stretched wider than shown here.

     

     

    Bob, just a thought about the vertical resolution, because I see that only 144 pixels are used. Considering the total height at 224 lines, I wondered if it is possible to increase the vertical resolution of the playfield. Here is an quick/dirty example that compare 144 vs 176 vertical resolution (wide pixels).

     

    Again, thanks for your kind attention.

     

    Marco

     

     

    post-29074-0-53793500-1528079661_thumb.png

     

    • Like 4

  7. Posted

    Hold on... actually, I may be able to do it that way (including the fruit), if I create a few tables and make some changes... Let me finish the 'tunnel' code which I'm currently working on, and I'll revisit this...

     

     

    Thanks for your reply, Bob!

     

    For convenience, I added the fruits to my setup, maze 1 does not require overlapping sprites, instead with maze 2 and maze 3 you can use the 320D mode for overlapping sprites (red sprites + green sprites, see sample below).

     

    The 320D mode has the advantage of being 1bpp and in our case it can be used (without combination restrictions) for momochromatic sprites * only * with color 2 (PO C2 and P4 C2) :

     

    ---------------------------------------------------------------------------------------------------------------------------

    320D (WM=0,RM1=1,RM0=0) 1 bit per pixel, 3 colors + background & transparent from 2 palettes

     

    P1 P0 D7531 D6420 P2=0 : palette 0 P2=1 : palette 4

     

    0 0 0 0 BG + BG / transparent

    0 0 1 0 C2 + BG

    0 0 0 1 BG + C2

    0 0 1 1 C2 + C2

    -----------------------------------------------------------------------------------------------------------------------------

     

    post-29074-0-62575000-1525053989.png

    post-29074-0-37088500-1525054002_thumb.png

    post-29074-0-94808400-1525054018_thumb.png

    • Like 3

  8. Posted · Edited by Defender_2600

    Hi Bob, looks great !! :)

     

     

    ... I used dithering for two of the monsters, the player, and two of the fruit. ...

     

    I was thinking that maybe you can use dithering only with the purple monster :

    ( *for some fruits it will be necessary to use two overlapping sprites)

     

    post-29074-0-09770800-1524970369.png

    post-29074-0-62334900-1524970396.png

    post-29074-0-61162300-1524970407.png

    • Like 6

  9. Posted

    I really don't understand this. It's been what, over a decade with the same sound issue and the reason for the issue has been known for several years... The other mystery feature updates may be interesting, but there really seems to be no excuse for the sound emulation issue to still be there after all this time. I'm afraid without that being fixed, I'm going to have to pass on the next Sega Portable no matter what other new features there may be.

     

    Hi Kevin, I was just reading this article. Sounds like a good update :

    http://www.seganerds.com/2017/08/15/two-fans-have-reportedly-fixed-the-atgames-genesis-audio-issues/

     

    • Like 1

  11. Posted

    Bob, I don't know if it helps for your project (and maybe I'm missing something) but the 320D mode looks like the equivalent of 320B mode (with 3 colors + background & transparent from 2 palettes) with the advantage that the 320D mode is only 1bpp (as 320A) and therefore approximately equivalent to 160A (cycles consumption).

     

     

    post-29074-0-85248500-1523328317.png

     

  12. Posted

    Hi Bob, 320 mode + 160 mode would be very interesting ...

    Anyway, I see a few square pixels in those sprites. Maybe they used the 320C mode sprites with 320A mode background.

     

    --------------------------------------------------------------------------------------------------

    320C WM=1,RM1=1,RM0=1
    4 colors from 2 palettes + background & transparent, 2 bits / pixel
    D7 D6 D3 D2
    0 0 0 0 BG + BG / transparent
    0 0 0 1 BG + BG / transparent
    0 0 1 0 BG + BG / transparent
    0 0 1 1 BG + BG / transparent
    0 1 0 0 BG + c2
    0 1 0 1 BG + c6
    0 1 1 0 BG + c10
    0 1 1 1 BG + c14
    1 0 0 0 c2 + BG
    1 0 0 1 c6 + BG
    1 0 1 0 c10 + BG
    1 0 1 1 c14 + BG
    1 1 0 0 c2 + c2
    1 1 0 1 c6 + c6
    1 1 1 0 c10 + c10
    1 1 1 1 c14 + c14

    -----------------------------------------------------------------------------------------------------

     

    post-29074-0-91624700-1523324703.png

     

    • Like 1

  13. Posted

    Pac Man black (Pac in reverse such as you play as on of the ghosts going after four pac's)

    Dual Pac ( two players Simultaneously such's as one works one side of maze while the other works the other side)

     

    Ok, so there are two versions of a type of Dual Pac-Man...

    - In Pac-Man Collection, With the difficulty switch set, in a two player game the opposite player controls Blinky when in chase mode.

    - There's a 'Ms. Pac-Man Twin' port, albeit unfinished.

     

    Also, I'm pretty sure someone did a hack which reversed the monsters and the player... at least the sprites for them.

     

    - In Pac-Man Collection, With the difficulty switch set, in a two player game the opposite player controls Blinky when in chase mode: Pac-Man Collection (XM Enhanced) or Pac-Man Collection Updated Monsters

     

    - There's a 'Ms. Pac-Man Twin' port, albeit unfinished: Ms. Pac-Man Twin (Unfinished)

     

    - Also, ...someone did a hack which reversed the monsters and the player: Inky (Hack)

     

     

    @ PacManPlus: Hi Bob! :)

    • Like 3

  16. Posted

    Here's one that might be a challenge - Congo Bongo, Sega, 1983

     

     

    Pretty much every port of this game to both consoles and computers stinks worse than my dirty socks. Since the 7800 could handle a 3/4 isometric perspective (Desert Falcon), why not try a port of this title?

     

     

    It would definitely be interesting to see how a 7800 version would play/look of Congo Bongo.

     

     

    I love Congo Bongo, so here is my mockup :) :

     

     

    post-29074-0-79014600-1517180120_thumb.png

    • Like 6

  19. Posted

    Quick poll, or feedback request...

    I did a little more cleanup of the monster pics, and 4 variations of the font.

     

    3) Slightly downsized adaptation of the arcade font intended to match the look of the arcade.

     

    "3) Slightly downsized adaptation of the arcade font intended to match the look of the arcade."

     

    This is my preference. Great update, Kevin!

     

     

    post-29074-0-11992600-1497324838_thumb.png

    • Like 1

  21. Posted

    Alt Attack 2 is a re-draw of the 7800 port. Your first take is closer to the Arcade port.

    I would stick with your first take as it is closer to the Arcade, since that is what you've been going for regarding all the other changes. :)

    :thumbsup: :)

     

     

    Amazing improvement as always, Kevin. Thank you so much!! :) :thumbsup: :thumbsup: :thumbsup:

    • Like 1

  22. Posted

     

    Thanks for the heads up Trebor! Looks like there are some graphical changes too. So if we want the 7800 Arcade version, can just order a custom 7800 cart then. Or wait for Concerto. :love:

     

    Hmm. This will go on my "Mateos Rewritable Multigame 7800 Cart" as soon as it arrives. No such thing as too much Centipede! :)

     

     

    Thanks guys! :)

     

    In August, I was working on an interesting update but then I've been busy with real life. I'll try to make some progress this weekend.

     

    • Like 3
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