Search found 3131 matches
- Wed Jan 31, 2007 10:07 am
- Forum: Sound
- Topic: how can i do music on megadrive?
- Replies: 288
- Views: 552008
Well, in fact i just wrote the 4 bits PCM player for Z80 but the result is really disapointing... My idea was to use the PSG as 3 DAC capable of playing 4 bits PCM data. The PSG codes the envelope on 4 bits so by setting the tone to 0 we can use PSG channel as 4 bits DAC by modifying quickly the env...
- Wed Jan 31, 2007 9:53 am
- Forum: Super 32X
- Topic: Cache coherency
- Replies: 8
- Views: 9867
- Tue Jan 30, 2007 7:05 pm
- Forum: Announcement
- Topic: New game in developement... CA the Meowian
- Replies: 14
- Views: 24512
- Tue Jan 30, 2007 10:56 am
- Forum: Tools
- Topic: [GensKMod] version 0.6 is out
- Replies: 22
- Views: 19634
About genskmod... I was benchmarking my last demo and i figured out that genskmod had a Step/Step animation. It is Shift+Esc... So I ran my demo and pressed Shift+Esc and the demo was moving almost each time... If the Step/Step is really 1Frame/1Frame, it means that my demo runs almost 60fps... Are...
- Mon Jan 29, 2007 10:06 am
- Forum: Sound
- Topic: how can i do music on megadrive?
- Replies: 288
- Views: 552008
Audio converter in QB, converts ordinary 8-bit PCM wav to 4-bit PCM: open "wavfile.wav" for binary as #1 'open source file open "convert.4bt" for binary as #2 'destination file Lenght&=lof(1)-58 'get the lenght - header seek #1, 58 'skip header for i& = 0 to Lenght& 'loop until all data processed n...
- Mon Jan 29, 2007 10:05 am
- Forum: Sound
- Topic: how can i do music on megadrive?
- Replies: 288
- Views: 552008
I see... Maybe it was 4bit adpcm... I cannot check since it was rented game... If i remember correctly, the 32x documentation mentions that GEMS3.0 supports "Delta 4bit" DAC... I suspect it is a sort of adpcm-looking format specialy designed for the z80. Delta 4 bits is exactly the ADPCM 4 bits stu...
- Sun Jan 28, 2007 9:48 pm
- Forum: Announcement
- Topic: Forum is now open to public
- Replies: 49
- Views: 85722
- Sun Jan 28, 2007 9:47 pm
- Forum: Sound
- Topic: how can i do music on megadrive?
- Replies: 288
- Views: 552008
Are you sure about the GTA3 music in 4 bits ? Maybe you mistake with the MS ADPCM 4 bits or other 4 bits audio format which use some compression method. Pure 4 bits PCM can't be "good quality" bt at least it can be acceptable. I did more tests, i now get better result but still dispointting. I first...
- Sun Jan 28, 2007 12:07 pm
- Forum: Sound
- Topic: how can i do music on megadrive?
- Replies: 288
- Views: 552008
:arrow: I have another question :) I tried to make a DAC player that use 4bit samples. So i took a 8bit .wav sample and removed the lower 4bits (set to 0) and i get... a background "CHHHHHH" over my sample. I don't think it is normal, or i misunderstood something about 4bit samples? :arrow: I also ...
- Sat Jan 27, 2007 1:53 pm
- Forum: Super 32X
- Topic: Master SH2 BIOS
- Replies: 12
- Views: 18282
- Sat Jan 27, 2007 9:06 am
- Forum: Super 32X
- Topic: Master SH2 BIOS
- Replies: 12
- Views: 18282
the main problem with 32x is the DRAM / VRAM speed... Are you sure the SDRAM speed, or FB speed is the main problem ? I would have guessed some missings features were much more a concern : no fill polygon, no scroll no scaling/rotation/distortion ... no hardware graphics function. Anyway, there are...
- Fri Jan 26, 2007 3:12 pm
- Forum: Mega/SegaCD
- Topic: CDROM reading speed
- Replies: 24
- Views: 26527
Hi Stef :D Hehe no.. I will stick to emulation dev for now, but I'm very interested to see how the homebrew genny scene is coming along. It's good to see that a lot of people still are making things for those good old consoles, that motivates me . I had that datasheet floating around for a few year...
- Thu Jan 25, 2007 10:22 am
- Forum: Mega/SegaCD
- Topic: CDROM reading speed
- Replies: 24
- Views: 26527
- Wed Jan 24, 2007 2:23 pm
- Forum: Mega/SegaCD
- Topic: CDROM reading speed
- Replies: 24
- Views: 26527
"should continue to read sector during your data transfert. " Yeah, of course, i'm already doing this... I don't stop reading (exept if i loose a sector). So... i don't know where is the real problem :/ Err strange, i can help you if you want to do some low level access but i warn you that would be...