[rescue] LCD hi res 17" monitor wanted

Romain Dolbeau romain at dolbeau.org
Tue Mar 12 07:57:23 CDT 2019

Le mar. 12 mars 2019 C  13:38, Sandwich Maker <adh at an.bradford.ma.us> a C)crit
> adding all the line dots and dividing into the dotclk to get hfreq
> then adding all the lines and dividing into hfreq to get vfreq
> and playing with sync bits until i got a 60hz frame.

That's pretty much it, unless re-using an existing mode...

> i was assuming an lcd would be fine with a comparatively narrower hsync.

It may or may not, it depends on how the display is trying to sync to
the signal.
Older multisync CRT could be very tolerant, as they had to deal with a lot of
different input from different vendors, and they were analog-to-analog
It was particularly true for third-party manufacturers trying to sell
to big-name
customers - Apple or Sun or HP had mostly fixed-freq CRTs back then...
Iiyama could only sell by accepting to hook up to anything...

Modern LCDs tend to prefer to stick to the standard, and won't try very hard
to give you a picture... if they even have an analog input.


Romain Dolbeau

More information about the rescue mailing list