Software Support > GroovyMAME
SCART CRT TV And GroovyMAME Thread 2
lettuce:
--- Quote from: Calamity on December 17, 2011, 07:16:44 pm ---If I get you right the shimmering effect is due to interlacing, and you can't remove it. Just use progressive modes for your games. The tri-sync utility won't help as your TV is std-res, apart from the fact that it could mess with the driver's registry.
The Arcadeperfect utility only works with the AVGA 3000 and will be tied to the same limitations because these are inherent to CRT technology.
--- End quote ---
The 'shimmering' effect is only noticeable when in windows, i dont get this when playing games.
It looks like a spoke too soon when saying i thought i had the Bush TV sorted out, it would seem that i get the same garbled screen when i try and play any vertical games (Donkey Kong, Don Donpatchi, raiden) Any ideas why this is?
So the monitor specs line (15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448) is just a general setting for TV's, i cant find a line that is specific to my Sharp or Bush TV??
Calamity:
--- Quote from: lettuce on December 17, 2011, 07:41:53 pm ---The 'shimmering' effect is only noticeable when in windows, i dont get this when playing games.
--- End quote ---
Yes, then it's the interlace effect, completely normal.
--- Quote from: lettuce on December 17, 2011, 07:41:53 pm ---It looks like a spoke too soon when saying i thought i had the Bush TV sorted out, it would seem that i get the same garbled screen when i try and play any vertical games (Donkey Kong, Don Donpatchi, raiden) Any ideas why this is?
--- End quote ---
I thought the problem with the Bush TV was with interlaced modes but it may be related to custom refresh rates. Try limiting the lower refresh rate with this line:
monitor specs0 15625-16200, 58.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448
There's no specific settings for your TV yet, you're the first one to test!
lettuce:
Cheers, i shall try that modeline. Well i was able to get a display in windows on the BUSH TV when i changed the windows refresh rate from 200Hz to 60Hz, but when i loaded a few vertical games i had the same display problems as pictured above. I have also noticed that mame must be doing something inbetween the start of the rom loading and the 'nag' screen as i can see this same distorted display effect on the black screen that comes up before the nag screen, but when the nag screen displays the display is fine. Can can upload a video to better explain it if you woudl like!?
This is all on the BUSH TV by the way, the Sharp TV seems as good as gold atm, apart from the very slight underscan on the vertical shift
Can you explain to me what each section of the modeline is regarding to, i know now that the 2nd section of the modeline is lowest and highest refresh rate for the display (is this vertical or horizontal?), but what are the other 11 sections?
lettuce:
Ok i tried the revised modeline and it didnt seem to solve the problem :(. Have noticed i get the same problem when booting the PC and only gets a picture when the windows XP loading screen appears, so im guessing whatever refresh rate the motherboard boot screen and dos screen are in this BUSH TV doesnt like also?
Calamity:
Try with this one:
monitor_specs0 15625-15800, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448
BTW:
--- Quote ---; monitor_specs_0-6 = "HfreqMin-HfreqMax, VfreqMin,VfreqMax, HFrontPorch, HSyncPulse, HBackPorch, VfrontPorch, VSyncPulse, VBackPorch, HSyncPol, VSyncPol, ActiveLinesLimit, VirtualLinesLimit"
;
; * HfreqMin-HfreqMax: Minimum and maximum horizontal frequency, in Hz. Defines the range of horizontal frequencies the monitor is capable to sync.
; The higher the horizontal frequency, the higher the vertical resolution available for the same vertical refresh.
; The higher the horizontal frequency, the higher the vertical refresh available for the same vertical resolution.
; The higher the horizontal frequency, the lower the horizontal amplitude of active video (narrower picture).
;
; * VFreqMin-VfreqMax: Minimum and maximum vertical frequency, in Hz, Defines the range of vertical frequencies the monitor is capable to sync.
;
; * HFrontPorch, HSyncPulse, HBackPorch: Horizontal timing and geometry, values in µs
;
; * VfrontPorch, VSyncPulse, VBackPorch: Vertical timing and geometry, values in ms
;
; * HSyncPol,VSyncPol: polarities, not in use! defaults to negative.
;
; * ActiveLinesLimit: Vertical resolutions until ActiveLinesLimit value included, are generated as progressive, regardless the possibility
; of obtaining the required vertical refresh value.
;
; * VirtualLinesLimit: Vertical resolutions above ActiveLinesLimit and below VirtualLinesLimit are virtualized, that is, an interlaced resolution
; bigger that the native one is generated, with the right refresh, and "hardware stretch" is applied.
; Vertical resolutions above VirtulaLinesLimit are generated as interlaced, without any stretching.
--- End quote ---
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