Software Support > GroovyMAME
Monitor presets
Vectorfire:
--- Quote ---VMMaker 1.2b is obsolete. Please use the new CRT Tools 2.0, which are synchronized with GroovyMAME and are much easier to use.
--- End quote ---
Im confused, the instructions I used just yesterday state to use VMMaker. No mention any CRT tools?
http://geedorah.com/eiusdemmodi/forum/viewtopic.php?pid=1016#p1016
Are those instructions no longer valid? more importantly, has using them already going to screw me in any way?
Calamity:
--- Quote from: Vectorfire on February 10, 2020, 09:30:42 am ---
--- Quote ---VMMaker 1.2b is obsolete. Please use the new CRT Tools 2.0, which are synchronized with GroovyMAME and are much easier to use.
--- End quote ---
Im confused, the instructions I used just yesterday state to use VMMaker. No mention any CRT tools?
--- End quote ---
1.2b is obsolete. 2.0 (VMMaker & CRT Emudriver) is fine.
Nevohteeb:
Hello everyone,
I am trying to create several modelines to use my Raspberry Pi 4 under Retropie in my arcade cab, and I found this post a few weeks ago.
I used switchres to generate the modelines, and it appeared some work (green ones) whereas some don't (red ones):
ModeLine 320x240x60.00 6.63984 320 336 368 424 240 242 245 261
Modeline 384x224x59.63 7.904513 384 400 440 504 224 235 238 263
Modeline 448x224x59.17 9.408014 448 472 520 600 224 236 239 265
Modeline 448x224x60.00 9.396 448 472 520 600 224 234 237 261
Modeline 384x224x60.00 7.89264 384 400 440 504 224 234 237 261
Modeline 320x224x59.19 6.650094 320 336 368 424 224 236 239 265
Modeline 320x224x60.00 6.63984 320 336 368 424 224 234 237 261
I read deeper inside the code to find some explanations, and I found the values mentioned in the first post:
--- Quote from: Calamity on November 21, 2011, 12:18:51 pm ---
// Hantarex MTC 9110, Hantarex Polo
h9110, polo
crt_range0 15625-16670, 49.5-65, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 192, 288, 448, 576
--- End quote ---
Nevertheless, I can see in the Hantarex MTC 9110 service manual those values:
* Horizontal range: 15.625 kHz +/- 0.5 kHz. Then, the range should be 15.125 kHz to 16.125 kHz
* Vertical range: 45-65 hz
* Horizontal blanking: 12 us
* Vertical blanking: 1 ms
We can see that:
* 2.000 + 4.750 + 8.000 = 14.750 us (not 12 us?)
* 0.064 + 0.160 + 1.056 = 1.28 ms (not 1 ms?)
Would someone have an explanation about those numbers? How were they determined?
Calamity:
Hi Nevohteeb,
Those numbers were determined by direct experimentation on my own Hantarex. I found that 12 us wasn't enough for horizontal blanking (it caused a black shadow on the left side of the screen). 1 ms wasn't enough either, it would cause line distortion on top of the screen. I found the values provided were safe in all cases.
With regards to the horizontal range, iirc the manual says 15.625 kHz +/- 0.5 kHz adjustable. Adjustable means that you have a window of 1 kHz width (-0.5, 0.5) kHz that you can adjust up or down by means of the hfreq potentiometer. In my experience, the most useful adjustment is the one that covers 15.6-16.6 KHz. This allows 256p@60 Hz, for vertical games like 1942, that many other arcade monitors and TVs don't support.
Nevohteeb:
--- Quote from: Calamity on August 03, 2020, 02:29:00 pm ---Those numbers were determined by direct experimentation on my own Hantarex. I found that 12 us wasn't enough for horizontal blanking (it caused a black shadow on the left side of the screen). 1 ms wasn't enough either, it would cause line distortion on top of the screen. I found the values provided were safe in all cases.
--- End quote ---
Hi Calamity,
well, thanks for those informations. Very useful for me.
I'll now try to figure out why I can't get any 384x224 resolution working.
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