Gauntlet, Gauntlet II and Vindicators II

[cacophony]

Alex (d18c7db) has a mostly complete FPGA implementation of Gauntlet, Gauntlet II and Vindicators II:
https://github.com/d18c7db/Gauntlet_FPGA

I don't know how easily this would port to MiSTer but wanted to bring up the potential porting opportunity.

[alanswx]

I haven't gotten it working yet. Let me know if you want to work on it, I have some progress, but I can't get it booting.

[ElectronAsh]

Hi, all.

This is great news, as I always loved Gauntlet.

I might start posting in this forum more often, to keep up with what's going on it MiSTer land, and to catch up with Sorg.

[jotego]

That's good news. Yet another core copying around JT51 files instead of using git submodules. Please stay tuned to changes in JT51 repository as there are a couple of things I have to finish on it.

[mmmonkey]

The two gauntlet cores in partcular would be prett mazing to see at some point if possible.
Would 4 player actually be possible on MiSTer?

Up to 6 if using USB I believe - https://github.com/MiSTer-devel/Main_Mi ... assignment

[Hodor]

At the moment it seems that things like speech synth don´t work and the audio mixing needs improvement. However, maybe they can be fixed in the future. I´d love a perfect replica of Gauntlet.

[Shaneus]

Not wanting to sound like I'm port begging, but it looks like these utilise similar hardware to the Atari System 1 which included Marble Madness and Road Blasters. Would I be far off in saying if Gauntlet etc. are working, these others are too?

[limi]

…and System 2 seems very similar, although it had medium-resolution output (512×384). It has some of the most iconic (IMO) arcade games: APB, Super Sprint, Paperboy, 720° — would be a fantastic core to have for MiSTer.

[LamerDeluxe]

I'd love to have this core on MiSTer, I've played a lot of RoadBlasters and APB on the Lynx, the other games are great as well.

[mmmonkey]

Oh man, I'd forgotten about APB!

[Hodor]

There are several amazing Atari games that deserve a FPGA replica. I wonder if there is enough documentation to make this happen, though.

[d18c7db]

I haven't gotten it working yet. Let me know if you want to work on it, I have some progress, but I can't get it booting.

The only Xilinx specific entity left in my code was the PLL for clock generation, so assuming you managed to replace that with an Altera equivalent and respect the clock phases, my next suggestion would be to use the simulator and ensure the 68K is executing instructions from ROM, including jumps to and returns from subroutine which verifies correct stack operation (read/write to RAM). That would be a big step forward to getting it running I think.

That's good news. Yet another core copying around JT51 files instead of using git submodules.

Hey Jose I did think about using submodules but first off my Windows based GIT desktop doesn't seem to support them, secondly I wasn't sure if the submodule points to a specific revision in time (what if you make future changes to your code that breaks backward compatibility) and lastly
"Advice on using submodules (or not)"

Not wanting to sound like I'm port begging, but it looks like these utilise similar hardware to the Atari System 1 which included Marble Madness and Road Blasters. Would I be far off in saying if Gauntlet etc. are working, these others are too?

https://github.com/d18c7db/atari_system1_fpga is a start I've made, the video section is fully debugged and functional, the only cartridge implemented so far is Indiana, the main CPU section is executing corrrectly, audio is sort of mostly complete but not finished. In simulation, this runs successfully to game initial screen so i believe if I was to run it on an FPGA it would 90% work, but I haven't tested it on hardware yet.

[Shaneus]

Woah, that's impressive progress so far! Wonderful to read