Not really interested in development of peer designs for IBM PC technologies MGA/CGA/EGA/VGA per se. I do like the wealth of commodity or PC castoff displays from small NTSC to VGA intended monitors.

So from my purview, the conceptual leap from MGA/CGA to EGA/VGA was that of including Palette registers, allowing small bit depth frame buffer pixel values to index into wider bit depth color values. While the number of simultaneously colors was attributable to the smaller pixel value, the color displayed corresponded to the larger bit depth palette value.

The EGA to VGA leap being a digital to analog monitor interface.

Matters not to me. I am just generating what displays i can on those monitors that come my way.

In practice, "VGA" has several timing standards attributable to various sync, pixel quantities and rates that a target monitor can be expected to conform to. CRT's with continuous time sweep capability, turned this into high art, LCD are a bit un-even in this regard due to the "quantized" nature of their pixel technology.

As to doubt that a DS'4x0 can generate of 3.8us pulse at a 32kHz rate with enough precision to produce a stable well-framed display, i can only say a bit of calculation and lab work will indicate you, perhaps, underestimate the device.

Those interested in Dr. Suding (thanks for the name correction) his site is:

The good doctor