What is HIGHGFX and how does it work?

[LoadWB]

Jen's announcement of the new Indivision AGA included mention of the HIGHGFX driver.  This is very interesting!

I don't have the ability to download and view information on the package right now, and my insatiable curiosity has me in its grasp.  I'm hoping someone might shed some light on how these additional screen modes work.

Also, does the high resolution and color set put a strain on the available chipset bandwidth?  I recall that SuperHiRes caused my workbench to slow down considerably due to bandwidth issues.

This seems like quite an amazing device for US$180... maybe Christmas will see me with some new Amiga toys

[InTheSand]

Hi,

You can find information on HighGfx on Aminet here.

In a nutshell, it's an AGA chipset monitor driver that provides a variety of screenmodes, the most important for scandoubler use being 1024 x 768 interlaced.

I haven't tried it on my own A1200 so can't really comment on the speed.

 - Ali

[LoadWB]

I threw the 4000 back together tonight to try this.  There's nothing in the way of technical documentation with the package :-(

Also, it does not seem to work at all with my system.  Though it is probably a shortcoming in my FP2001 monitor not being able to handle the frequencies.  Or maybe it's the SD/FF in the PIV.  Meh.

I'll try it with the 1200 sometime, too.  I have an external FF/SD for it, though also with an FP2001.  Thanks for the help.

[Piru]

It's quite useless really. Flickery as hell and the modes really bog down the machine (even more than the regular doublescan modes).

Even if the sd/ff would remove the flicker, gfxcard is still a MUCH better idea.

[Ratte]

Piru wrote:
It's quite useless really. Flickery as hell and the modes really bog down the machine (even more than the regular doublescan modes).

If you dont like the "flickery" mode, its up to you to call it "kokko" :crazy:

When i made HighGFX back in 1996 i had no money for a graphicscard, but i still owned a good monitor.
(Idek5017 15-40kHz 45-100Hz)
HighGFX made a good job for me, displayed all raytraced pictures and photos on my monitor.

On the technical side i must disagree, HighGX is a "normal" 35ns/4xbandwidth screenmode.
If you move a window with same dimensions on another 35ns screenmode (super72), the speed is equal.
If you move a bigger window (because on HighGFX you can do that) it is normal, that it is slower.

HighGFX in 16 colors is still usable and without flickerfixer you can reduce the flickering with
MagicTV.

When I made this screenmode, it was not the question of "Why should I do that?" ... the question was "Can I do that?".

Andre
 ;-)

... parallels to Kickwork31 ?? :-D

[Ratte]

Working on some new modes and an HighGFX-update/bugfix.

Showroom / HighGFX (DOpus / WB / DPaint)
Showroom / HighGFX (WB / DPaint)
Showroom / HighGFX (DPaint - HAM8-Mode)
Showroom / HighGFX (Development-System)