MiSTer FPGA Forum

Hi,

I have some issues identifying what is causing an odd video output on the Minimig on my MiSTer, no matter the settings, using scaler or not, even the HDMI output I get very pixelated text identical to the VGA output. I have tried tons of different resolutions on the HDMI and filter settings with no luck.

Anyone else have this issue?

I am trying to run
Kickstart 1.3
Workbench 1.3
OCS A500 (same error on ECS)

If I use Kickstart 3 the text is clear, so I guess the font is different on that ROM.

On the MiST with the same setup the text is clear

Thanks

MiSTer
MiST

That is an issue with Scandoubler FX. Please go into OSD > "Audio & Video" and set "Scandoubler FX" to "Off.

It surely is a bug.

probably some wrong interpretation of hires mode in non-AGA chip.
i will look.

Threepwood wrote: ↑Tue May 26, 2020 3:47 pm That is an issue with Scandoubler FX. Please go into OSD > "Audio & Video" and set "Scandoubler FX" to "Off.

It surely is a bug.

Already tried this with no luck.

Sorgelig wrote: ↑Tue May 26, 2020 3:55 pm probably some wrong interpretation of hires mode in non-AGA chip.
i will look.

Sounds great, hope you can find the bug. I can happily tried different stuff if needed

CapnChaosDK wrote: ↑Tue May 26, 2020 5:04 pmAlready tried this with no luck.

That's odd, I can replicate it exactly by setting Scandoubler FX to CRT 25% and on OFF I don't have that issue. Can you please post your MiSTer.ini?

I am using the minimig core in version 20.05.05 with a config of 68000, OCS-A500, 512k Chip, 512k Slow, Cloanto amiga-os-134-workbench.adf, all on an IPS Panel via HDMI.

EDIT: Attached fotos

Scandoubler FX = OFF: Scandoubler FX = 25% CRT:

Really odd, same core date here, but with FX off (attached)
Also tried 134 from Amiga Forever and 133 from tosec same with Kickstarts, tried some different versions of the ROM.

INI files
[MiSTer]
key_menu_as_rgui=0 ; set to 1 to make the MENU key map to RGUI in Minimig (e.g. for Right Amiga)
forced_scandoubler=1 ; set to 1 to run scandoubler on VGA output always (depends on core).
ypbpr=0 ; set to 1 for YPbPr on VGA output.
composite_sync=0 ; set to 1 for composite sync on HSync signal of VGA output.
vga_scaler=0 ; set to 1 to connect VGA to scaler output.
hdmi_audio_96k=0 ; set to 1 for 96khz/16bit HDMI audio (48khz/16bit otherwise)
keyrah_mode=0x18d80002 ; VIDPID of keyrah for special code translation (0x23418037 for Arduino Micro)
volumectl=0 ; enable audio volume control by multimedia keys
vscale_mode=0 ; 0 - scale to fit the screen height.
vscale_border=0 ; set vertical border for TVs cutting the upper/bottom parts of screen (1-99)
bootscreen=0 ; uncomment to disable boot screen of some cores like Minimig.
;mouse_throttle=10 ; 1-100 mouse speed divider. Useful for very sensitive mice
rbf_hide_datecode=0 ; 1 - hides datecodes from rbf file names. Press F2 for quick temporary toggle
menu_pal=0 ; 1 - PAL mode for menu core
hdmi_limited=0 ; 1 - use limited (16..235) color range over HDMI
fb_size=0 ; 0 - automatic, 1 - full size, 2 - 1/2 of resolution, 4 - 1/4 of resolution.
fb_terminal=0 ; 1 - enabled (default), 0 - disabled
osd_timeout=30 ; 5-3600 timeout (in seconds) for OSD to disappear in Menu core. 30 seconds if not set.
bootcore_timeout=10 ; 10-30 timeout before autoboot, comment for autoboot without timeout.
font=font/myfont.pf
reset_combo=0
dvi_mode=0 ; set to 1 for DVI mode. Audio won't be transmitted through HDMI in DVI mode.
video_mode=7
video_info=5
vsync_adjust=0

Got it. When you set forced_scandoubler=1 then it happens without the Scandoubler FX being on. You need to set it to 0.

KS 1.3 use weird resolution which changes from lores to hires during the screen output.
It will be fixed.

@Sorgelig, sounds great thanks!

@Threepwood, correct on HDMI it will fix it to set scandoubler to 0, but that will render the VGA option unusable when it comes to 30hz monitor

CapnChaosDK wrote: ↑Wed May 27, 2020 5:59 pm @Sorgelig, sounds great thanks!

@Threepwood, correct on HDMI it will fix it to set scandoubler to 0, but that will render the VGA option unusable when it comes to 30hz monitor

I´m suffering the same issue with my Samsung SyncMaster 710v flat screen (VGA Direct Video). If I set the forced_scandoubler=1, the screen shows the same problem as you. Unfortunately I can't set it to 0 because the monitor is unable to render 15.7Khz at 50Hz.

Hoping to see this fixed soon. Thanks, Sorgelig!

A workaround for now is to use the scaler for the VGA output, so setting forced scandoubler to 0 and then vga scaler to 1 and adjust video mode accordingly. Not perfect, but works for now to use the VGA screen

CapnChaosDK wrote: ↑Thu May 28, 2020 12:11 pm A workaround for now is to use the scaler for the VGA output, so setting forced scandoubler to 0 and then vga scaler to 1 and adjust video mode accordingly. Not perfect, but works for now to use the VGA screen

Thanks! I´ll try it later.

fixed in today's release

Sorgelig wrote: ↑Fri May 29, 2020 2:31 pm fixed in today's release

Tested on my end and can confirm that it's working perfectly now.
Thanks for the quick fix

I can confirm it as working, too. Thanks a lot, Sorg.