Driving a fixed frequency monitor with a Matrox Millennium

[Quin Leach]

I've got a Cornerstone Color 19 (which is a
OEMed HITACHI Model: HM-4419-D) that I want to use with a Millennium by modifying the MGA.MON file.
The monitor, according to: http://www.bigmonitors.com/support/p...s/pdf/rc19.pdf
Has a range of 27-79kHz for the Horizontal Scan and a range of 55-80Hz for the Vertical.
Pixal Clock is 135Mhz, and they recommend 1280x1024 @ 63.5 Hz...

According to: http://si87.com/Support/a-to-h.html
the CORNERSTONE COLOR 19 CD1619S/30
has a Horizontal Frequency of 78khz
and a Vertical Frequency of 72hz
Sync Type(s) Supported: Composite Sync, Separate Sync, Sync on Green
Maximum Resolution: 1280 x 1024

I have had some luck creating custom settings using a Horizontal Frequency of 78kHz @ 640x480, 800x600 and 1024x768, but whenever I adjust the Horizontal, the Vertical changes itself & sets itself to Hz settings over 100... What I get is doubled images stacked vertically. Positive and negative sync both "work", giving the same results.

If anybody knows what I need to change / how to calculate the settings for MGA.MON to use this monitor, I would be grateful.

Thanks! Quin
cornerstone@rainware.com

[gbm]

You cannot control Vfreq independently on Hfreq. The best you can do is to create the profile for 1280x1024 with proper sync parms. Vfreq will be always above 72 Hz at any lower resolution.