We figured out on Discord that this should be feasible. Turns out the Mardi Gras pixel clock limit is 160 MHz, so with this in mind I did come up with the attached VFS. I had to shorten the horizontal front porch by 32 pixels from what was given to me by the modeline calculator to make it work with my monitor. Before trying this I got display regions repeated horizontally, which looked really confusing. You can adjust this as well - I have put comments in the file to show where I've touched the calculated result.
I compiled the vfs file on my Octane with this command line:
The options are explained in this excellent wiki article: https://wiki.preterhuman.net/Video_Format_Object_(VFO)_Files
This outputs an
Have fun! Also, don't do a web search on
I compiled the vfs file on my Octane with this command line:
Code:
vfc -cchip=mgras_vc3.def,board=mgras.def -p '-DRSSCOUNT=1' -p '-DDB32=0' -p '-DINTERLACED=0' -p '-DSTEREO_FMT=0' -p '-DOPTIONS=0' -p '-DZBUF=0' -p '-DVERT_SERRATION=0' 1920x1080.vfs
This outputs an
a.vfo
which you can then copy to, say, /usr/gfx/ucode/MGRAS/vof/1920x1080_56.sdb
and then use the Display Properties in Toolchest to use that mode. Make sure to note which mode you had before! If the mode does not work or displays incorrectly, log in remotely and copy the earlier mode's file over your custom mode, restart xdm and try again. Have fun! Also, don't do a web search on
mardi gras full hd
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