Software Support > GroovyMAME
Trying to create monitor presets for KT-2914 (Betson-Kortek) MultiSync
RetroACTIVE:
Not yet, same issue with the bottom and right sides... but the -resolution switch works again with these monitor specs.
Calamity:
Does this help at all?
monitor_specs0 15250-15900, 40-80, 2.187, 4.688, 6.719, 0.190, 0.191, 1.018, 0, 0, 248, 448
monitor_specs1 16700-19000, 40-80, 2.187, 4.688, 6.719, 0.190, 0.191, 1.018, 0, 0, 320, 448
monitor_specs2 20001-29000, 40-80, 2.910, 3.000, 4.440, 0.451, 0.164, 1.048, 0, 0, 384, 576
monitor_specs3 29001-32000, 40-80, 0.636, 3.813, 1.906, 0.318, 0.064, 1.048, 0, 0, 496, 768
monitor_specs4 32001-34000, 40-80, 0.636, 3.813, 1.906, 0.020, 0.106, 0.607, 0, 0, 576, 768
monitor_specs5 34001-38000, 40-80, 1.000, 3.200, 2.200, 0.020, 0.106, 0.607, 0, 0, 600, 768
RetroACTIVE:
Mk is still not quite (same fit issues)... albeit a bit better.
I can correct the mk issue with the -resolution switch with these monitor settings.
Unrelated tests:
This actually fixed a problem I had with Williams games. Defender, Joust, Stargate, Robotron etc... they were squished in the middle of the screen, almost as if the orientation was wrong. Now they work perfect!
pacman, galaga are squished vertically and warped on the sides. Phoenix, Frogger and 1943 are perfect.
Thanks!!!!!!
RetroACTIVE:
Played a little more with various games... So so many work just fine.
Those funky games with H res around 400-500 are the ones that need tweaking.
Calamity:
Well, I wanted to have some time to get the values directly from your monitor's manual. These values are shown in the 'Timing chart' at page 8. Here they are:
--- Code: ---15750, 50.00, 6.72, 8.67, 7.27, 0.128, 0.444, 0.825
2 7 13
15750, 60.11, 6.72, 8.67, 7.27, 0.064, 0.444, 0.825
1 7 13
24827, 55.61, 3.04, 3.04, 3.80, 0.282, 0.322, 1.260
7 8 31.28
31469, 59.94, 0.64, 3.81, 1.91, 0.318, 0.064, 1.048
20 2 33
37880, 60.32, 1.00, 3.20, 2.20, 0.030, 0.110, 0.610
1 4 23
--- End code ---
The numbers I added below are the vertical values expressed as number of lines. You get those by dividing each vertical value by the Line Time Total (A) in the chart.
As you see, that chart describes the values for several standarized modes but not the actual frequency ranges accepted by the monitor.
On the other hand, the manual says your monitor supports a horizontal frequency range of 15-40 KHz. This multisync monitor seems to accept a continuos range, according to this description. This is not true for other multisync monitors, like the Hantarex Polostar, that has a banded range (15/25/31 KHz) so a frequency in the middle, like 18 KHz, wouldn't be supported.
Now, the chart suggests different porch and sync values for different horizontal frequencies. That's why we don't do a single 15-40kHz monitor_specs line but we divide it in separate sub-ranges where different porch values apply.
Anyway, the values suggested for the 15 kHz range seem too odd for me. I'd keep using the ones we have.
At this point, if you want to find the actual ranges and the corresponding values, your only option is by trial and error through Arcade_OSD and GroovyMAME.
I'd use Arcade_OSD to tweak one of the problematic resolutions. Try 400x288 and see if you can adjust it to a point where it looks good. We'll then use these values to adjust the corresponding monitor_specs line.