VIC-Emulation finished!

VIC2-Emulation in the Xmega 128 finished:

 

- refreshrate between 24 and 28 Hz

- userfont with 10 Hz refresh rate

- multicolor, enhanced color, bitmap, multicolor-bitmap

- 38/40 column + 24/25 line with softscrolling

- screen disable, with only short 4us CPU-stops to check if enabled - so jiffy-DOS should work!

- sprites with multicolor, expand x/y, background priority

- sprite-data with about 75 hz refresh

- illegal screen modus

- all CPU-stop are shorter than 30 us / 42 us is OK for disk-loading with normal speed + screen on.

 

Not implemented: Raster-IRQ, sprite collision detection -> Emulation is possible, but I have to write to ram for this - and now the xmega only reads!

 

I'm so happy: Loderunner is full playable - it don't uses collision detection ;-)

 

With Pac-Man I can reach new world-highscores, because I cannot die ;-D

 

 

Pipes is full playable - it uses multicolor, but no sprites:

 



 

Multicolor-bitmap-testscreen:

 

 

Donkey Kong reaches only the start-screen:

I think many games needs the raster-register!

In Pole Position only the startscreen works.

 I will add the second CIA / 7406 to test some games from disk...