Fastest running CyberStorm Mk III?

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if here are users with overclocked 68k cards, i like to see how fast then SDL games at 640*480* 16 bit resolution can run.

I upload a defendguin with framerate display

it work on default in window.but for fastest speed it should start from shell with the defendguin -f

this work in fullscreen

Here is the link for download, can copy to ram and run.note music should stay off

http://www.daten-transport.de/?id=nfvHR9gTPYGw

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>I decompressed to ram and did a lot of compiles and disassembles first. The speed >seamed fast and responsive but the gfx were messed up. The foreground objects were >multi-colored. The background was fine.

20fps look great, but i dont understand wy colors are wrong.

Can you post the sashimi output, also delshay can do it.

here is a test Program that show what Pixelmode your GFX Card support.If your GFX Card support RGB16 Pixelmode then speed is fastest.

http://www.daten-transport.de/?id=yXDfJTmY7sMG

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>The Voodoo4 supports most every gfx mode but the big endian modes have problems with >the colors of some objects. This is an Elbox bug for a long time and they don't seem too >enthusiastic about fixing.

netsurf do the same, it run fast when you have a RBG16 Pixelmode.does netsurf too show wrong colors ?

the Problem when use RGB16 PC Pixelmode is that SDL do not work ok.
the convert is done by a shift and mask value.(i explain at utiltiybase more)

When use RGB16PC then there need 2 bits from upper rotate, so that they are in the lower 2 bits.

But because C do not rotate the bits in the upper come not to the Bit Position 0 and 1 and so color information get lost.
 
So cant use RGB16PC mode in SDL good.I thought the classic amiga all use RGB16 and only winuae use RGB16PC.So i thought it make no speedloss.

SDL amiga do the way same as MOS, it use a RGB16 Mode intern and swap the data.

for others with RGB16 PC screenmode its maybe faster when set the env variable SDL_SWSURFACE

maybe delshay can try out if it work faster on his Card

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I send Matthey a Version that work on his system with rgb16PC and 20 fps with correct colors now.

maybe this run on your system too faster ?
Note, the framerate is limit in program code to 25 fps.More is not possible.

http://www.daten-transport.de/?id=UUUkArTbbnPm

Problem of this version is, red color accuracy is not soo good, but it look still nice.