Agnus and Denise Rebuild

[bloodline]

trekiej wrote:
If Agnus and Denise were remade to be chunky instead of planar, what other conversions would have to be made?

The first thing comes to mind is the exec.  Would it have to be made compatable or would the chip have the same appearance as the original chip?

Just rambling.  :-D

Why is a mouse when it spins?

-Edit- Ok a real answer... Denise is responsible for display generation and thus is the Planar component... Changing her to chunky... all software would break.

[bloodline]

trekiej wrote:
@ bloodline:
I guess I am currios how that is seen by the system.
Would that include a change in *.device?

All that would happen is that pixels would be arranged differently in memory, you wouldn't be able to do certain effects like dual playfield without the Blitter and all gfx would be corrupted for software which assumed Denise was still working the old way.

[bloodline]

Speelgoedmannetje wrote:

Egg-Chen wrote:
The Falcon030 seems to have both Planar and chunky because the Gfx chip allow the use of 256 colors on screen out of a 262144 colors palette,  or 65535 colors out of 65535 colors palette (without color limitations like the HAM mode) in its 2 distinct video modes.  

Maybe the Amiga designers should have gone this way when designing the AGA chipset, the Falcon030 proves it was not impossible, and the Gfx chip also remains compatible with the old ST video modes too...

AFAIK the Falcon030 WAS designed by (ex) Amiga designers. :-)

It wasn't, but the falcon was what the A1200 should have been.

[bloodline]

trekiej wrote:
@ zac67:
I wonder if a 1200 or 4000 be a better target then.  I could look it up but off the top of my head think that they would have 32 bit busses.

The Amiga was always a "value" design... it pretty much was designed to be no more powerful than it needed to be... altering any part of the design would have a negative impact on the rest of the system... In terms of Busses the Amiga has always be deficient.