SpritesMind.Net

OK, I though that you was free to remap samples everywhere in ROM by patching addresses.
Yes, if you must keep the same ROM size, you will have to compress them enough to be able to replay with higher frequency.

Keep us informed about your progress!!!

Excuse my stupid mind, I have wrote lossless instead of lossy.
It's fixed. Thank you.

Actually SF2 samples in the MD version are 4.77 Khz, i could up them to 9.4 Khz by using 4 bits ADPCM (same size as 8 bits 4.77 Khz) but i'm not sure ADPCM will sound that better... I don't said to use ADPCM, but original arcade samples are ADPCM encoded. (up them to 9.4 KHz will not improve ...

The CPS1 samples are produced by the OKI MSM6295.
It can replay 4 channels 4-bit ADPCM samples up to 32kHz. (depending the input clock speed)

Taking a look on System16.com report that SF2 samples are 7.576kHz.
So, if the game play only two samples at the same time, it's possible.

Great work !

SDL was thought for PC and by the way, was not optimised for vintage videogames systems. (use lot of RAM and not run fast)
10 years ago, two LIBs are used for programming games : SDL, and Allegro.
Allegro comes from Atari ST computer and was ported to PC.
I remember that Allegro was 2 times faster ...

Nice port !

A nice stuff for programming "great" 32X/SCD new games will be a cartridge including RAM and Flash memory.

You finally reach your goal. Congratulation !

See for yourself - here's an arc of the "double pixel" version of the Yeti3D demo (with music and sound). It's not any faster on the emulator that I can tell, but it may be faster on real hardware.
Unfortunately, I can't test it on a real 32X and the emulator always display 60fps.
So it's not ...

I hope that can help to speed up a bit.

Many systems got undocumented display resolutions.
There are no wide pixels display mode (160x224) for helping you ?
Else, by using 8bit screen mode and writing 16bit "double pixel" ?

Old since ... Yesterday !
OK, I'm looking the new tread. Thanks !!!

Amazing use of the 32x Slave !

If fact, we just have to use AND operator.

0 : skip
1 : write

Sprite Mask Screen Mask Merged Mask
00000000 01010000 00000000
01111110 00001111 00001110
01111110 10100010 00100010
00000000 01101100 00000000
The reason to do "front to back" was to avoid to write hidden pixels.
Sprites hide sprites ...