MiSTer FPGA Forum

I've actually tried to use JogCon on MiSTer via SNAC a few months ago, but I couldn't force it to switch to NeGcon compatibility mode on system start.
Shoutouts to Taito for coding proper JogCon recognition in Arkanoid R 2000, only to make it limited to saying that this controller is not supported.

Pole Position is complicated by the fact that is the only somewhat popular system to run on Zilog Z8000 processors. I don't know if there's an available HDL replica of this CPU to build the core around.

That's not a bug. Metal Slug 1 does not use full horizontal resolution for its gameplay area and attempts to mask screen edges, not quite reaching the full height. I believe that Neo Geo core has a setting to crop the image to a narrower resolution properly if that bothers you.

FPGA64 wrote: ↑Fri Jun 21, 2024 8:34 am

Its restricted by the need to support CRT. If CRT support was removed the resolution could be increased.

Vector display cores actually run at 480p resolution, this makes them unusable on 15khz CRT televisions without using scaler.

virtuali wrote: ↑Sun Apr 07, 2024 9:30 pm

Tried it right now, side by side Mister and real N64, they are identical. There are other games in which timings are off on Mister, like Knife Edge and WCW Nitro, and they show exactly the same issue on Ares.

Huh, thanks for checking. I remember the forest stage killing the framerate really bad in particular, but maybe I'm just misremembering.

Is it me, or Cruisin' USA runs too smooth on the N64 core? I played the game on a real console a few years ago and I remember framerate being a bit lower.

There's a working Sonic 2 & Knuckles rom with a md5 hash of bdd13934f4f31bf4d849ef8597d4a07c. I checked it against the rom listed in No-Intro's database (Sonic & Knuckles + Sonic The Hedgehog 2 (World) (Rev A) (Lock-on Combination)) with a hex editor and it differs in exactly 4 bytes.

I have a good v2.5 SDRAM board from misterfpga.co.uk, ordered in 2020.

ExCyber wrote: ↑Mon Jan 22, 2024 11:40 pm

ROM cartridge support is probably a very low-priority task for the Saturn core, though (only two games use them, and both have patches available to use a RAM cartridge instead).

Both Ultraman and KoF 95 cartridges have been supported by the Saturn core for a long time now. No need to patch discs to play them.

An update on the Ballblazing situation, the newest version of the core not only makes the Remember cracked version playable in NTSC, it even boots the original .g64 disk images. Now the third best version of the game can be played in its original intended speed.

The color of PCB has nothing to do with board versions. Different vendors make boards out of different materials. For example, https://MiSTerFPGA.co.uk uses black PCBs for all their products.

SDRAM board has a copyright notice on it, the board revision is also listed there. If your board is v2.9 or newer, it should be fine for the Saturn core.

Literally from your page:

Todo: How does the in-game protection work ?

rhester72 wrote: ↑Wed Dec 13, 2023 11:46 pm

@pac the obvious CP that prevents boot entirely, agreed - UniBIOS doesn't do anything for the ones with in-game protection.

Are there any examples of obvious in-game copy protections checks? Where game works at first but then suddenly stops.

I am surprised to learn that Alien 3 for Master System seems to run fine on the Nuked-MD core. This game is notorious for not booting at all on actual Mega Drive consoles. Is this a bug, or was something intentionally tweaked in the core to make this game playable?

I found a peculiar thing. Setting the Turbo mode option to "Smart" makes the core pass the Lucasfilm Games screen. What's even more interesting, the same trick works even on a .g64 of the original game disk! There's a catch however, as the game's GUI shows graphic corruption. So the game is playable but not in a 100% perfect form.

Yes, tested with stock Commodore KERNAL and disk roms. JiffyDOS doesn't help either.

No luck with C128 core. Freezes with C64 mode option set to either "pure c64" or "C128 extensions".

Also, I read the docs attached to the REM version and they say that the game was cracked from disk, not a cassette. Why would it access the motor then? Weird.

Thanks for responding, I've opened an issue on github for REM version not working in NTSC mode.

It's a Game Boy bootrom (also traditionally mistakenly called "BIOS") stored inside the Super Game Boy cartridge, similar to bootroms you can load in the Game Boy core. The .sfc file is the SNES part of the SGB rom, .bin file is the Game Boy part of the SGB rom.

Most likely that accurate analog video output timings are of lower priority currently. My CRT also displays Saturn shifted to the left, but the image signal itself is very stable. This will be probably tweaked some time later.

So, as I understand, MCR3 is a true interlaced video system (480i), and MiSTer core outputting progressive 240p video on analog display is an imperfection of the core?

Currently the core outputs video with the these specs: 511x240, 15.78KHz, 59.7Hz. The picture is clearly in progressive scan with blank scanlines every other line. The core also has an option titled "Deinterlacer Hi-Res" which, I assume, turns the video from 240p to 480p, making it lose sync on 15KHz TV.