OS4.0 and AGA video mode @31.5 kHz...

[flaviosr]

Hi to all,

I have read in the installation of OS4.0 about the possibility to use the standard video modes of Amiga @ 31.5 kHz without SD!!! True?
I do not have an adapter RGB=>VGA so I ask before buying it...
Is this possible in OS3.9 also?
In this last case... would it be possible to run WHDLoad games without SD?!?!? :-)

[flaviosr]

Matt_H wrote:
WHDLoad doesn't work on OS4.

The way screen promotion works is that NTSC screens are changed to DblNTSC screens and PAL screens are changed to DblPAL screens. In OS4 I think the Dbl modes can replace the 15KHz modes, but in 3.9 the double modes are added alongside the 15KHz modes, meaning WHDLoad can still force a 15KHz screen.

There are a very (very) small number of WHDLoad slaves that support setting Dbl screenmodes, however. Probably less than 4.

mmm... a direct question!
Anyway (apart WHDLoad) I could use this "modes" for both OS3.9 and OS4.0... right?
I only need the RGB=>VGA adapter...?