Re: TECH: AppleColor RGB Sync frequencies

[Rubywand <rubywand@swbell.net>]

Mark C Spaeth wrote:
> 
> My //gs and all of its related manuals are a good 600 miles away,
> so I'll have to rely on info from all of you ;)
> 
> What is the standard sync frequency and RGB format that the GS monitor uses?
> 
> I'm asking since I've started into the realm of arcade game collecting,
> and most games use 15.7k Hsync, analog RGB, which is too low of an hsync
> for 'modern' VGA monitors, but if I remember correctly the AppleColor
> fits these specs well...
> 
> Can anyone confirm these specs for either the //gs monitor or some of the
> old macintrash displays?  Better yet, has anyone tried this?  (I'd hate
> to blow out my // hardware testing a centipede board ;)
> 
> Thx.



     Below are the GS monitor specs:

>>

026- What are the specs and pin-out for the GS RGB monitor?

Max Resolution:   640 Horizontal dots x 200 Vertical dots
                 (200 lines of 640 dots)

Dot Pitch:        .37mm

CRT Size:          12"/  11.5" viewable

Video Bandwidth:   6.5MHz   (+/- 1.5DB)


Scanning Frequencies

               60Hz model            50Hz model

Horizontal:    15.734kHz             15.696kHz
Vertical:         60Hz                  50Hz


 Pin    Function

  1     Red video ground
  2     Red composite video
  3     Composite sync
  4    (not used)
  5     Green composite video
  6     Green video ground
  7    (not used)
  8    (not used)
  9     Blue composite video
 10    (not used)
 11    (not used)
 12    (not used)
 13     Blue video ground
 14    (not used)
 15    (not used)
Shell   Shield ground

<<


from Apple II Csa2 FAQs at ftp://ground.isca.uiowa.edu/2/apple2/Faqs



Rubywand