RTG and PAL Amiga Modes Displayed Correctly on A PC CRT?

zoopster
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RTG and PAL Amiga Modes Displayed Correctly on A PC CRT?

Unread post by zoopster »

Has anyone managed to configure the minimig core to display both RTG workbench and a correctly scaled PAL video mode for games on a PC CRT?

I'm using a HDMI to VGA video adapter into a Philips Brilliance PC CRT. I can get the RTG screen perfect at 800x600 with vga_scaler on and video mode 5 but the scaling on the PAL video mode for playing games looks awful as the image is being scaled to 800x600.

I also have a 15khz Sony PVM which has no problems showing the PAL video signal for games but obviously cannot display a 800x600 RTG video mode.

Thanks
John

zoopster
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Re: RTG and PAL Amiga Modes Displayed Correctly on A PC CRT?

Unread post by zoopster »

I managed to get a "native" non-scaled 640x480 RTG screen to show on the PC CRT (HDMI to VGA adapter) with these settings:

[minimig]
direct_video=1
vga_scaler=0
forced_scandoubler=1

It's not perfect but better than nothing. Hopefully some additional P96 video modes with timings for PC CRTs will become available soon.

With vga scaler enabled RTG output is rock solid - as you'd expect - but the native PAL video modes have incorrect aspect ratio in modes like 640x480 and 800x600 when the vga scaler is on.
zoopster
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Re: RTG and PAL Amiga Modes Displayed Correctly on A PC CRT?

Unread post by zoopster »

These settings are the closest I've come to perfection - RTG is perfect and PAL pretty close:

[minimig]
direct_video=0
vga_scaler=0
vscale_mode=1
forced_scandoubler=0
video_mode=5
anderse77
Posts: 58
Joined: Thu Jul 14, 2022 2:20 pm

Re: RTG and PAL Amiga Modes Displayed Correctly on A PC CRT?

Unread post by anderse77 »

What resolution do you actually get here? What happens if you remove the last line?

Since vga_scaler is 0, I think that video_mode and vscale_mode will be ignored here.
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