Main > Monitor/Video Forum
Betson Imperial Multisync problem
wpcmame:
--- Quote ---I believe it does the whole range - I ran a test floppy (do a search on the boards here, can't remember off hand who set it up for me to test) and it handled nearly everything thrown at it.
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You mean that it can do 18KHz. That is really interesting since it means that you can run vertical games without stretch on a horizontal monitor at the correct refreshrate. Powerstrip or advmame should be able to create such a mode.
--- Quote ---According to the specs on the Kortek site, I recall it has a digital memory for up to six non-standard resolution settings.
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The problem with such a statement is that is says nothing. The monitor can't store settings based on resolution since it doesn't know how many pixels the picture is built up from. It only got the sync pulses to work from so it must use some kind of interval on these frequencies to determine which setting to use.
In another thread someone tested all modes on the AVGA card and found out that the monitor got at least separate setting for 15.7KHz, 31KHz and 38KHz. It also seemd like it stored different settings for <55, 55-58, >58 Hz refreshrates in the 15.7KHz group. Question is still how wide the ranges are. Will 18KHz be covered by the same settings as 15.7Khz or
are there special 18KHz settings as well.
desmatic:
--- Quote from: wpcmame on December 20, 2004, 09:28:47 am ---You mean that it can do 18KHz. That is really interesting since it means that you can run vertical games without stretch on a horizontal monitor at the correct refreshrate. Powerstrip or advmame should be able to create such a mode.
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My thoughts exactly, which is why I'm really dying to know for sure. If the kortek actually handles 17-22 kHz then it can perfectly emulate every game, including vertical games run horizontally, which is a big deal for advancemamers.
--- Quote ---According to the specs on the Kortek site, I recall it has a digital memory for up to six non-standard resolution settings.
The problem with such a statement is that is says nothing. The monitor can't store settings based on resolution since it doesn't know how many pixels the picture is built up from. It only got the sync pulses to work from so it must use some kind of interval on these frequencies to determine which setting to use.
In another thread someone tested all modes on the AVGA card and found out that the monitor got at least separate setting for 15.7KHz, 31KHz and 38KHz. It also seemd like it stored different settings for <55, 55-58, >58 Hz refreshrates in the 15.7KHz group. Question is still how wide the ranges are. Will 18KHz be covered by the same settings as 15.7Khz or
are there special 18KHz settings as well.
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From my experience it's almost always determined by the horizontal clock, though on some like my pc monitor, vclocks can also make a difference. Usually it has to do with a certain horizontal range though. My older pc monitor used to save settings between 4kHz or there abouts. The ADI one i'm on now, seems to handle 1kHz, which is pretty incredible.
desmatic:
--- Quote from: KevSteele on December 20, 2004, 08:42:12 am ---I believe it does the whole range - I ran a test floppy (do a search on the boards here, can't remember off hand who set it up for me to test) and it handled nearly everything thrown at it.
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It was me. It's still available at
www.msu.edu/user/jonesdes/files/advvboot.zip
Do you know if the kortek can handle hclocks between 17kHz - 22kHz. These are the really important ones, the ones that the D9200 doesn't support.
jimj:
--- Quote from: wpcmame on December 20, 2004, 09:28:47 am ---In another thread someone tested all modes on the AVGA card...
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In case anyone's interested that thread is here: http://forum.arcadecontrols.com/index.php/topic,28954.msg242630.html#msg242630
I added the OSD display ranges to ArcadeVGA.txt so that you can easily see what other resolutions you'll affect when you change the OSD settings. Unfortunately I'm away from my Mame cabinet for the holidays, so I still don't know if I can get my AVGA and Betson working correctly.
KevSteele:
--- Quote from: desmatic on December 20, 2004, 07:09:52 pm ---
--- Quote from: KevSteele on December 20, 2004, 08:42:12 am ---I believe it does the whole range - I ran a test floppy (do a search on the boards here, can't remember off hand who set it up for me to test) and it handled nearly everything thrown at it.
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It was me.
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