Main > Monitor/Video Forum
Soft-15KHz - slim new tool for 15KHz on normal vga cards
SailorSat:
--- Quote from: TheManuel on December 18, 2007, 07:54:32 am ---Now you have me lost. You said a few posts above that MAME does not change the pitch:
Besides, doesn't one of those new parameters, refresh or refreshspeed automatically adjust the sound rate (I think this is what you aluded to when you said MAME alters the sample rate).
--- End quote ---
Yeah I was trying to describe cabMAMEs behavior.
And for those new MAME features (it should be refreshspeed), well... It doesn't work too good, still have cracking and jumping sound.
TheManuel:
OK. Thanks.
I'll check out your build if I run into sound problems when I get a monitor.
bent98:
Manuel: It worked well for me. I just compiled the hacks into my own mame build.
Sailer I do have a question. I am running d3d, artwork all on, tripple buffering, and 25scanline.png and 640x480 resoultion in desktop
I tried using same settings with ddraw and it just centers the game in the middle of screen. The gaems all fit on screen and artwork and overlays looks good. get some tearing espically noticable when playing zaxxon. Should I stick with d3d or is ddraw better? If so how do I get ddraw to work with the aartwork and fill the screen instead of cropping and centerizing?
SailorSat:
Err... Don't know, I don't use artworks at all :)
bent98:
Ok Sailor was doing some testing and I have a question. My setup is an Nvidia Geforce 7950GT Running
forceware 163.75 drivers. I have all 3 modes installed on soft 15khz. I also added a custom31khz.txt
with these 2 entries (modeline '1024x768@60p' 65.0 1024 1048 1184 1344 768 771 777 806 -vsync -hsync
modeline '800x600@60p' 40.0 800 840 968 1056 600 601 605 628 -hsync -vsync)so my desktop would not
flicker as per your instructions. I have a (Billbas BL27CB0P 27" 15~48 kHz
Autosync™CGA/EGA/VGA/SVGA/XGA Penta-Resolution V-Freq. 47~90 Hz) Monitor.
Now I am running mame with ddraw, no hardware stretch, switch res on and certain resolutions
instead of getting 15khz horz and 60khz vertical I am getting double that on each. I will list out each res
mode i have tested and exact values I am getting. My questions area as follows:
Is it safe to run the arcade monitor @120+khz vertial even if specs say 90khz?
Why isn’t the monitor running these resolutions at the 15khz/60khz range??
If its a limitation of my video card or monitos is there way to test similar resoultions that may run at 15khz?
I spoke to ummon who has the same monitor and said he has had
similar findings with a geforce 6 series card. Can it be that newer PCI Express cards exhibit this issue
of doubling refresh rates with certain resolutions? Anything to address this? I would like to run all
15khz resolutions at 15khz since games also appear brighter as well. Please let me know what you think.
All tests were done in 32 bit color
240x240 30.9khz 116.6khz
256x240 15.7 60.4
256x256 32.5 119.3
256x264 16.2 58.6
288x240 31.8 120.1
296x240 31.7 120.1
304x240 15.8 58.4
320x240 15.5 58.1
320x256 32.8 119.1
336x240 15.8 60
352x256 32.6 120.5
352x264 32.3 114.1
352x288 15.9 50.9
448x240 15.5 32.4
448x384 24.8 59.9
632x264 15.8 56.8