Software Support > GroovyMAME

Is the Radeon R7 250 compatible with CRT Emudriver?

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silmalik:
Have a look a Calamity's signature and post log files  ;)

Swainy:
I have been reading Calamity's guides and I will post log files later (busy with the kids at the moment). Am I right though in thinking that with it being a 31hz monitor, it won’t be able to do lower resolutions than 640 by 480 though?

Swainy:

buttersoft:
Horizontal Scan Rate = (Total Vertical Lines per Frame) x (Frames per second)

31kHz = (480 visible lines + 45 blanking lines) x 60Hz

so the following is also true:

31kHz = (576 + 44) x 50Hz

A 15Khz CRT will go from about 50-65Hz and same for a 31kHz arcade CRT, i believe. (A PC monitor is often a bit more flexible, and will probably sync anywhere from 31kHz up to its horizontal scan limit (google for the specs) at anywhere from 40-160Hz, as long as the equation balances. You can also look into something like 120Hz 240p (or 100Hz 256p))

EDIT: oops, section removed as that's not a PC monitor you have :) The only problem with the above might be that some old arcade monitors can be sensitive. Keep it on spec if you can.

Swainy:
Cool thanks for all the info and help guys! Got it running at 31hz and it’s looking good. Tempted to buy a 15hz monitor now though if I can find one at a good price.

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