MiSTer FPGA Forum

The A500 Minimig core is cycle-exact, and the ST is a far simpler machine, so that shouldn't be out of reach there, either.

FWIW, I've never noticed problems with 1920x1440 on my LG 27GN850. It's a cheap monitor, and as I said, suffers from black crush, but it works really well with the Mister. If you're having that much trouble with your XG monitor, it might be worth returning it. I would expect newer LGs in that price range to be just as good or better.

If MAME has a restriction against commercial use, then it's not GPL, full stop. Even if they claim otherwise, a restriction on any downstream use is not compatible with the GPL.

You want this fan:

https://www.amazon.com/gp/product/B00NEMGCIA

It comes with the adapter you need to connect to the 2-pin Mister supply. However, you end up with quite a long fan cable flopping about. You can likely do surgery to shorten it, but I haven't bothered.

Yeah, my eyes got big when you said 7 amps. Few Mister supplies are bigger than 4A, so I was wondering what the heck was going on. At 5 volts, that's 35 watts!

I don't think that's GPL compatible, so it's not usable in this project, and probably isn't going to get much wider acceptance. The non-commercial clause just isn't going to fly almost everywhere. WinUAE couldn't use it that way, for instance, nor Cloanto, nor MiSTer.

breiztiger wrote: ↑Fri Jan 13, 2023 5:14 pm

i think, but i can be wrong, that winuae use SPS DLL

I'm just about certain this is correct. You have to drop the DLL file(s?) into the WinUAE directory for IPF images to work.

Write-protecting the BIOS is probably a very good idea. Allowing ROMs to be cached, and having RAM at the same address as ROM, both caused painful, difficult-to-diagnose bugs well into the Pentium era. Or maybe the caching thing was related to I/O devices. Curse my aging brain. I'm not clear on what the problem actually was, anymore.

I had very bad luck with Shapeshifter on the Amiga core. I kinda got it running, but it was pretty unstable.

I've been trying to get BasiliskII running on the Linux side, someone did a package for that, but I haven't had any luck there, either.

You didn't add anything of your own there, Grumpy. Were you intending to just repeat me, or were you trying to correct something I said?

That's an Amiga thread, though, they might not know about it.

Upshot: IPF is a proprietary format, using proprietary code, and none of the Mister devs seem interested in supporting it.

There's not enough space in the FAT filesystem for the number of files on it. It has too many entries and corrupts itself.

But, again, adding more latency is never an advantage. It's just straight worse than running on original hardware. There is no case where additional display or input lag is helpful.

If anyone's looking at that core, that's one of the ones that won't sync with my monitor at vsync_adjust=2. There are several Golden Age classics that do this, but the two Frogger cores are the only ones I remember offhand.

There are some cache options you can disable, which will slow it down quite noticeably. I think it's still faster than a real 1200, but not as much.