Build Your Own Arcade Controls Forum

Software Support => GroovyMAME => Topic started by: keilmillerjr on April 13, 2016, 11:37:53 pm

Title: WG K7000 - What resolution?
Post by: keilmillerjr on April 13, 2016, 11:37:53 pm

I have a WG K7000 in my neo geo that I will be using with a MAME PC, emulating only neo geo games. I designed a theme for attract mode front end with a 320x240 resolution. I assumed that because it is a “low res” monitor, that I would design the front end for 240p. I then realized that I don’t have a way I can think of to force attract mode to a resolution different from windows. After reviewing the spec sheet on my monitor, it has me raising some questions.

Windows 7 will display at lowest 480i I believe, so should I optimize my layout for 640x480 resolution?

WG K7000 Spec sheet declares 640 X 200. With a line count of 200, does it not display the neo geo board at its native 224 lines? How would it be able to display 480i without dropping lines?

https://www.wellsgardner.com/pdf/Spec/K7000.pdf (https://www.wellsgardner.com/pdf/Spec/K7000.pdf)

Thank you.

Title: Re: WG K7000 - What resolution?
Post by: keilmillerjr on April 14, 2016, 09:57:16 pm

http://forum.arcadecontrols.com/index.php/topic,116023.msg1230485.html#msg1230485 (http://forum.arcadecontrols.com/index.php/topic,116023.msg1230485.html#msg1230485)

Quote

Format: -crt_range 0-9   HfreqMin-HfreqMax, VfreqMin-VfreqMax, HFrontPorch, HSyncPulse, HBackPorch, VfrontPorch, VSyncPulse, VBackPorch, HSyncPol, VSyncPol, ProgressiveLinesMin, ProgressiveLinesMax, InterlacedLinesMin, InterlacedLinesMax

Quote

// Wells Gardner K7000
   k7000
   
      crt_range0  15625-15800, 49.50-63.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 192, 288, 448, 576

ProgressiveLinesMin 192
ProgressiveLinesMax 288
InterlacedLinesMin 448
InterlacedLinesMax 576

According to Calamity/GroovyMame, the K7000 can properly do 240p/480i - but WG spec sheet says 200 lines?

Title: Re: WG K7000 - What resolution?
Post by: Calamity on April 15, 2016, 03:40:03 am

That specs sheet is wrong.

15.7 kHz ----> 240p / 480i @ 60 Hz,  288p / 576i @ 50 Hz

(any monitor supporting 15.7 kHz will support 240p / 480i)

The sheet also specifies 15.1 kHz instead 15.7 which is also wrong.

Probably the confusion comes from the CGA having 200-line modes, but those were 70 Hz instead of 60 Hz.