Re: Mac to VGA Adapter Question

[a_specto@alcor.concordia.ca (Mitchell Spector)]

dempson@actrix.gen.nz (David Empson) wrote:

>Bryan Parkoff <BParkoff@satx.rr.com> wrote:
>> Do you think that Apple IIgs will be compatible to Mac to VGA Adapter so
>> it will allow me to view SVGA monitor to Apple IIgs video port through Mac
>> to VGA Adapter.
>
>It won't work by itself.  You would also need a devise which doubles the
>scan frequency, so that the monitor is able to lock onto the video
>signal.

    There is a _rare_ exception where these Mac-to-VGA adapters can 
be used on the IIgs. That is if the monitor supports lower horizontal scan
frequencies in addition to standard VGA frequencies. A handful of older
VGA monitors could drop down to 15.75 kHz (NTSC scan rate) but they
were unusual a decade ago and don't at all exist today--at least to the
best of my knowledge.

    I have a 14" NEC MultiSync 3D which works on my Windows PC 
*and* the IIgs using nothing more than a Mac adapter. Several other
brands exist that support 15-30+ kHz, including some made by Sony.
I still prefer the AppleColor RGB for a few reasons though...

Mitchell Spector
a_specto@alcor.concordia.ca