[comp.sys.ibm.pc.hardware] VGA Monitors: 2 questions

dsl@nova1.stanford.edu (Dave S. Lauben) (03/01/91)

I have 2 questions concerning (color) monitors:

1. I've recently seen a VGA monitor hooked to a MAC LC.  Is this the exact
   same standard that the IBM AT uses?  The Sony monitor was listed as being
   "Macintosh compatible" -- would this be merely a marketing ploy or is
   there really something different about the electronics (like ability to
   track different sync rates)?

2. Is it possible to (with the proper interface) adapt a VGA output to 
   standard R-G-B coax lines?  If the required interface is more than
   just a connector change, how complex/costly would the circuitry be?
   Pointers to commercial units or actual circuitry would be much 
   appreciated as this would save me the cost of a new monitor.

-Dave
lauben@star

tj@gpu.utcs.utoronto.ca (Terry Jones) (03/01/91)

My understanding is that the timing of the video signals is not EXACTLY
the same as IBM's VGA "standard" and therefore some monitors either
will not work or else must be adjusted (sometimes internally) to
work acceptably.