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Wilheim

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Posts posted by Wilheim

    A8PicoCart potential.

    in Atari 8-Bit Computers

    Posted

    Hi, all!

     

    I just got an A8PicoCart and I found it extremely interesting.

     

    I think we could get functionalities, specially considering that you attach a minicomputer into the Atari. Who knows? Maybe DOOM.

     

    Anyone who has the knowledge would be interested in doing something like this?

    • Like 3

    SUBCART

    in Atari 8-Bit Computers

    Posted

    On 11/24/2023 at 12:30 PM, tmp said:

    Since nobody complained about beta 4, it was promoted to 0011 release

     

    Changelog since 0010

      

    0011
===========
- XEX is now also (TAB) mountable (ATR/ATX/CAR/CAS/XEX)
- added support for MAP files
- menu item Mounts->Save to MAP
- hide/unhide files referenced in MAP file
- shortcuts and autorun can now store all current mounts
- new option to not clear mounts on reentering selector
- CTRL-SPACE doesn't clear mounts on reentering selector
- POKEY emulation fix (Instrumentarium)
- POKEY emulation fix (Das Omen)
- GTIA sound fix (Flob)
- fixed ECI/PBI cable detection when autorun is active
- fixed default colors when no SD card is inserted
- fix for CTRL-ENTER in search

    Also if you planned to get SUBCART or AVGCART, today is probably a good day to do so due to Black Friday sale

    Hi! Have you take a look about the graphics glitches I mentioned above?

    Time Wizard - a game for ABBUC Software Contest 2023

    in Atari 8-Bit Computers

    Posted

    1 hour ago, amarok said:

    I don't know the technical details of the device. Is it a sort of cartridge or something completely different? How fast it can read/write the data into its memory?

    Anyway, it would be really great to make possible to run Time Wizard on a stock 64kB Atari.

     

    It’s a cartridge I’m developing. It contains a 512kb flash rom and 512kb sram. The banking system is similar as the megacart, using 16kb banks.

    Currently I’m testing it before I’ll release a Developer’s Edition.

    • Like 3

    SUBCART

    in Atari 8-Bit Computers

    Posted · Edited by Wilheim

    1 hour ago, tmp said:

    if i understand the problem correctly, standard (gtia) output is fine, only vbxe is having issues, it could be that it's sampling data differently than gtia (or is it antic?), be it by design or due to phi2 loading by u1mb/vbxe/subcart/whatever it's connected there (where do you have vbxe phi2 input connected at pcb?)

    i'll try to do a small change in next beta to see if it fixes anything (unless i find that it breaks something else)

    I guess VBXE gets phi2 on antic socket, because is mounted over it.

     

    I also tried by changing the 7408 Ic with a ls and f versions, and I have the same results. I’m trying to get a phi2 fixer to see if this could help as well.

     

    p.s.: it seems that the graphics glitches come from the PMG overlay. The title and the moon could be using Player-Missile graphics.

    SUBCART

    in Atari 8-Bit Computers

    Posted

    22 minutes ago, tmp said:

    even if you enable pokey emulation on them?

    Not sure how I can do that, because I have to remove the subcart in order to put the other cartridges, so I can’t enable the Pokey emulation on these cases.

    SUBCART

    in Atari 8-Bit Computers

    Posted

    Not sure if this issue belongs here or not, but here it goes:

     

    I found that the game onEscape shows some graphic glitches with NTSC VBXE installed and using rgb output. That only happens when I enable pokey stereo emulation. I tried with other cartridges (ultimate, side3 and original release) and it doesn’t show the glitches.


    Also tried with 0010 and 0011 beta3 firmware versions and it shows the same.

     

    I’m using a ntsc 130xe with u1mb and VBXE on $d640 address.

     

    Here is a video showing it. I change to rgb and svideo output to show the glitches.

     

     

     

     

     

     

    onEscape - game

    in Atari 8-Bit Computers

    Posted

    3 hours ago, -^CrossBow^- said:

    Interesting you mentioning this. I don't have the same hardware setup you do, but I did try for the first time, to play this game with the actual cartridge through my VBXE output last night. I wasn't getting the same glitches that you were showing in your video, but I do get what I can only describe as sparklies along the screen that are fixed in place on some screens and I noticed that the sparkling/twinkling effect of the pixels doing this seem to increase and decrease with the music. It is really noticeable on the title screen. My hardware is a 130xe with the VBXE running the new NTSC palette core and a TKII with dual pokeys for my stereo output. Switching to mono mode didn't change this effect either so it did seem to be tied to audio somehow?

     

    Speaking, I have the audio ran separately off the TKII to the left/right inputs on the 9pin mini din I use for my RGB output so it is separate from the RGB although it all uses the same ground on the MD9 output of course.

     

    Have you tried swapping the Ic 74ls08 with a 74f08? Maybe it could

    improve the graphics.

    3 hours ago, scorpio_ny said:

    There is a beta release of the Subcart firmware that includes some fixes for the Pokey emulation. Maybe you can try that? There is a link for it in the Subcart thread here on AA 
     

     

    I already updated it. Thanks for your suggestion!

    onEscape - game

    in Atari 8-Bit Computers

    Posted · Edited by Wilheim

    8 hours ago, Beeblebrox said:

    It wouldn't hurt to install one. They are very cheap and easy to install. Would be interested to hear if it worked. 

     

    Can you still post an image of the glitches you see when running the game as before?

    Here’s a video showing rgb output (VBXE) and svideo ntsc (GTIA). You can see the glitches on rgb.

     

     

    onEscape - game

    in Atari 8-Bit Computers

    Posted

    12 hours ago, Beeblebrox said:

    Sure. Be interested to see. I found that the only things I changed that fixed my glitches was the O2 fixer chip and also swapping out the gtia. Where again the gtia I took out was absolutely fine in another A8 I subsequently put it in with no VBXE or u1mb present. 

     

    If you could still upload an image of the glitches? 

    Well, I just tried with an original cartridge and the glitches faded. The graphics behave better.

     

    it seems that I need a phi2 fixer.

     

    thanks for the advice!

    Mario Bros XE

    in Atari 8-Bit Computers

    Posted

    1 hour ago, tep392 said:

    I don't recall exactly what I did, but I left the code running in the cartridge space from 8000-BFFF, like the XEGS cart.  The Atarimax cart only banks 8k at A000-BFFF, so I loaded the fixed 8k bank into RAM at 8000-9FFF.  I don't know how much RAM below 8000 is used and I don't think I never tried it on my 400 or 800, which which are both 48k machines.  

    Interesting. Have you tried this technique with Commando?

    onEscape - game

    in Atari 8-Bit Computers

    Posted · Edited by Wilheim

    I just installed a VBXE on my NTSC machine, and now I’m watching some graphic glitches on my monitor using rgb video on this game.When I switch to svideo or composite (original GTIA) it works fine.

     

    also, I don’t have any other issue with VBXE and non-VBXE software. This is the only case.

     

    does anyone know what could be the reason?

    SUBCART

    in Atari 8-Bit Computers

    Posted

    16 hours ago, tmp said:

    SUBCART fw 0011 beta3

      

    0011 beta 3
===========
- added support for MAP files
- menu item Mounts->Save to MAP
- XEX is now also mountable (ATR/ATX/CAR/CAS/XEX)
- shortcuts and autorun can now store all current mounts
- fixed ECI/PBI cable detection when autorun is active
- fixed default colors when no SD card is inserted
- new option to not clear mounts on reentering selector (pure chaos)
- CTRL-SPACE temporarily doesn't clear mounts on reentering selector
- POKEY emulation fix (Das Omen)

    Great! Now Das Omen plays right!

    also, Yoomp! plays correctly as well.

    • Like 1
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