long term video playback on SEGA

KRIKzz · Post by **KRIKzz** » Fri Feb 05, 2010 8:32 pm

i build flash cart with SD card support and now i try to play videofiles from SD card. i use 224x168 resolution and evry frame have 19kbyte of size. spi interface on cart have ~500kb/sec data rate, but realy i can take only ~260kb/sec, so i have 13-14fps. on 2gb SD card i can upload 2 hous of video

funny, right ? (:

here some demonstration videos:
low quality tv sync
starcraft
final fantasy
simpsons
transformers

Stef · Post by **Stef** » Sat Feb 06, 2010 12:04 am

awesome ! Just missing sound now :p

Christuserloeser · Post by **Christuserloeser** » Sun Feb 07, 2010 5:35 am

Maybe you could use TmEE's Z80 driver for PCM playback ?

KRIKzz · Post by **KRIKzz** » Sun Feb 07, 2010 6:47 am

Christuserloeser wrote:Maybe you could use TmEE's Z80 driver for PCM playback ?

may be, but i think it will be difficult. in any case, i damage my cart, in some experiment, and now in waiting parts, for restore it

TmEE co.(TM) · Post by **TmEE co.(TM)** » Sun Feb 07, 2010 9:09 am

one would need some coordination between the Z80 and 68K since you cannot really have asynchrounous playback of video and sound in such setup (I think).

Huge · Post by **Huge** » Tue Feb 09, 2010 10:42 pm

The SD card interface is impressive, but otherwise, let's just say "Sega CD".

sega16 · Post by **sega16** » Wed Feb 02, 2011 4:29 am

You could start the z80 pcm then just play the video and hope it is similar (in sync)