A3000 VGA output questions...

[Zac67]

> 1: Will it work with pretty much any CRT or LCD monitor, or are there specific requirements?

most important: 50 Hz vertical scan rate for PAL
60 Hz vertically (NTSC) and 31.25 kHz horizontally is usually no problem

> 2: Are all Amiga screen modes available via the VGA port?

Yes, but 35 ns pixel modes (Super Hires, Productivity, DblPAL, DblNTSC) will be displayed with resolution halved (every other pixel doubled/missing) due to Amber limitations.

> 3: Are there any quirks/limitations I should be aware of? :-)

see above.

A general (potential) problem is horizontal tearing ('combing') that will be visible with quickly moving objects. This is caused by assembling two fields not generated simultaneously but 20 ms apart. This is a general deinterlacing problem and very hard to overcome (Amber uses weaving).

[Zac67]

From the technical POV, the A3k's FF and A2320 are absolutely identical. Both require proper adjustment of the pixel clock phase though.

When plugging anything into a digital monitor (i.e. LCD/TFT) you should never forget that the output needs to be resampled to the monitor's native resolution. Since the FF more or less provides VGA output, it somewhat fits onto a 17" or 19" monitor with 1280x1024 resolution. Some (few) models are able to exactly match the grids to get a sharp display. Anthing like 1024x768 or 16:9 is doomed to be blurry.

[Zac67]

There are a few weirdo monitors out there that don't accept a 31.5 Khz input.  I know because I saw it happen.

This is because the "31 kHz" output serves 31.25 kHz in PAL mode - double 15,625 Hz.

[Zac67]

Amber will only scan-double standard PAL and NTSC resolutions in ~15 kHz. Any 'exotic' mode will deactivate the flicker fixer and just pass through.

HighGfx will work with or without the scandoubler - 54 Hz vertical, 22 kHz horizontal - but I'm afraid it's interlaced...