MiCV2 Posted June 19 Share Posted June 19 (edited) Hi, I have a question. I have a PAL Atari 7800 and a problem with prototypes or homebrew games, they run too slowly or the colors are wrong. GameDrive is based on FPGA with AV output. Could it be possible to add NTSC compatibility for PAL consoles? A MiST(er) core automatically recognizes PAL/NTSC, the games always work correctly. Regards - MiC Edited June 19 by MiCV2 Quote Link to comment Share on other sites More sharing options...
Hasan Coskun Posted June 19 Share Posted June 19 Just be aware that not all NTSC games will run correctly or at all on a PAL console, Robotron for example will not work. I discovered this the hard way as I had a PAL console and then purchased an NTSC console. Always play the official PAL roms and homebrew on a PAL console and vice versa. I would recommend getting an NTSC console. 1 Quote Link to comment Share on other sites More sharing options...
SainT Posted June 19 Share Posted June 19 And also the 7800GD is not simulating the 7800 in it's entirety on the cartridge, just the AV portion. So there's no way I can make a PAL machine an NTSC machine. All I can do is interpret the data on the bus and translate it into AV output. If you want PAL or NTSC specific compatibility you will need to buy the appropriate console. 2 Quote Link to comment Share on other sites More sharing options...
Trebor Posted June 20 Share Posted June 20 59 minutes ago, Hasan Coskun said: Just be aware that not all NTSC games will run correctly or at all on a PAL console, Robotron for example will not work. @RevEng provided a hack of the NTSC only release of Robotron: 2084 that works under PAL consoles. Here's the ROM for convenience: Robotron 2084 (PAL Hack) (20210428) (73BF0B76).a78 It is a part of the PROPack archive collection as well. 3 Quote Link to comment Share on other sites More sharing options...
MiCV2 Posted June 20 Author Share Posted June 20 Thank you for the answers. It's a real shame, my PAL console is in very good condition, but an NTSC has clear advantages here. It's a shame that you can't emulate NTSC with the FPGA. Thanks anyway, the GameDrive is great 👍✌️ 1 Quote Link to comment Share on other sites More sharing options...
Hasan Coskun Posted June 21 Share Posted June 21 On 6/20/2024 at 10:28 AM, Trebor said: @RevEng provided a hack of the NTSC only release of Robotron: 2084 that works under PAL consoles. Here's the ROM for convenience: Robotron 2084 (PAL Hack) (20210428) (73BF0B76).a78 It is a part of the PROPack archive collection as well. Thanks, wasn't aware there was a hack. 1 Quote Link to comment Share on other sites More sharing options...
MiCV2 Posted June 21 Author Share Posted June 21 (edited) I once asked the user @tmp here in the forum whether his AVGCART could also emulate a memory extension. The answer was no. Months later, a firmware update came out, and 1MB RAM is now freely available. I still have hope that there will be PAL/NTSC compatibility with the FPGA. It's crazy, everyone is now looking for an NTSC A7800, and the good PAL consoles are disappearing into the basement forever. Edited June 21 by MiCV2 Quote Link to comment Share on other sites More sharing options...
SainT Posted June 21 Share Posted June 21 The answer is a definite no. There's zero possibility of it being yes. 🙂 Quote Link to comment Share on other sites More sharing options...
MiCV2 Posted June 21 Author Share Posted June 21 tmp once wrote, futures are not planned, they happen 😀 Best Regards 👍 1 Quote Link to comment Share on other sites More sharing options...
SainT Posted June 21 Share Posted June 21 Not planned and physically impossible are two different things. Hehe. 😆 Sadly it's really not possible. All I do is take the bus activity driven by Maria or Sally and turn it into video and audio. I don't drive the bus in any way. If you use the GD on an NTSC machine then it will act as an NTSC Maria, but on a PAL machine it can only act as a PAL Maria. There's just no options. 1 Quote Link to comment Share on other sites More sharing options...
MiCV2 Posted June 21 Author Share Posted June 21 (edited) x Edited June 21 by MiCV2 Quote Link to comment Share on other sites More sharing options...
MiCV2 Posted June 21 Author Share Posted June 21 I understood it and learned about the technology behind it, thank you very much. Now I just have to figure out how to make the music available to Rikki & Vikky. I bought the ROM through Steam. I'm really excited about GameDrive, despite my PAL console. For NTSC - if something doesn't work, I still have the MiST FPGA 👍 1 Quote Link to comment Share on other sites More sharing options...
MiCV2 Posted Monday at 09:26 AM Author Share Posted Monday at 09:26 AM (edited) Hi, I have two questions.. 1. I wanted to play chess with the A7800, but I only found „Video Chess“ for A2600. But why is it red and not blue? I tried PAL&NTSC, both have a red background. 2. I'm missing a hardware reset on the GD7800 cartridge. Sometimes NTSC or A2600 programs hang and I have to turn off the A7800 console. A real reset button would protect the hardware. Can I do a real reset in the console (mainboard) that works 100%? Best regards Edited Monday at 10:11 AM by MiCV2 Quote Link to comment Share on other sites More sharing options...
MiCV2 Posted Monday at 10:35 AM Author Share Posted Monday at 10:35 AM Problem 1 solved. It was an NTSC version! But it was declared as PAL. Now the background is blue 👍 Quote Link to comment Share on other sites More sharing options...
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