MiSTer FPGA Forum

Wonder if we're going to get the madness of an AmigaVision rigged up to emulate most of the CD library now on an A1200. Alternatively maybe a little more core work can get us booting ISOs and such.

There is a 2560x1440 Mister mode you can try (mode=14?). However this is achieved by horizontal pixel doubling, so in effect its more like 1280x1440, thanks to limitations of Mister's scaler as mentioned. Most of the time I think one is better off with 1920x1080 compared to that, especially on a 4K display.

Remember someone complaining about lack of CD Amiga support as evidence of "bias" and I pointed out that Neo-Geo also lacked CD support. Well we recently got NGCD support and it looks like Amiga is following in short order! Love to all the great devs contributing to this platform!

Does this actually scale better than say 1080p/1440p? This seems like madness :p

I would probably try forced_scandoubler=1 if you wanted something close to the original resolution that was more widely HDMI compatible.

You can but you don't really want to.

[gameboy]
vga_scaler=1
direct_video=0
video_mode=1920,240,60,cvt
vscale_adjust=0

In core menu set aspect ratio = wide/full and scaling = normal

This seems pretty laughable given the little ARM chip can barely run an audio synth.

The default 1080p also gave me trouble on an LG C1 TV. I suggest making your 1080p video line

video_mode=1920,1080,60

All that 50/55hz stuff works perfectly on my LG C1 in freesync. So its not like there is some general VRR problem with mister. Its not interacting well with your specific TV model for whatever reason.

One thing you could try is playing with your output resolution. Try 1080p, and maybe supply cvt and non-cvt modes. e.g.

video_mode=1920,1080,60,cvt

Lots of cheap Extron equipment available on ebay now that was used in professional CRT applications. You should be able to find something that can do some position adjustment there and deliver fairly good quality.

The Amiga core could really use this, IMO. Its positioned so far out compared to other cores!

Try vga_scaler=1 and vsync_adjust=0. If that works, its probably that the LCD can't handle the SNES's refresh rate, which is slightly above 60hz.

For clarity? As I understand these settings only adjust the position for HDMI output, not the analog output. Its not like Jotego's CRT V/H stuff.

Basic setting is forced_scandoubler=1. Also use direct_video=1 if you are using HDMI->VGA adapter. That should get you started.

If you use vertical integer scaling, 1200p isn't enough of a change to modify the output resolutions. (1080/4, 5, or 6). So the effective output should be the same as with 1080p. You can still use 1200p video signal if that suits your display better, but its just going to be larger black borders on top and bottom.

misterrocks wrote: ↑Wed May 24, 2023 5:05 pm

Does enabling video settings on MiSTer (as opposed to using the defaults) increase input lag? It sure feels like it to me.

Absolutely not. The video filters/ shadow masks are kind of limited for this reason. Only messing with vsync_adjust or say rotation in arcade games is going to have an impact.

Yes, you need to adjust the overscan setting on your TV, which is unfortunately named a bunch of different thing these days. But usually its something like screen size or screen fit, or possible even one of the "wide" modes.

for cores you need to set vsync_adjust=0 so it uses your 120hz. Otherwise its going to drop down to the core's 60hz, which is probably too low a refresh for your 31khz VGA monitor (I'm assuming.)

LamerDeluxe wrote: ↑Sun May 07, 2023 7:46 am

I use a Commodore 1084 15Khz monitor with RGB SCART. It has a slot mask, like most vintage arcade machines seem to have. And a big advantage of it is that you can easily shift and resize the image, using knobs on the outside of the monitor. This is especially handy with arcade cores and the Amiga core.

Well that sure explains a lot!