forums.ps2dev.org

hi everyone - in my program PSPSeq( http://dspmusic.org/psp ) i need to read and write lots of data to memory (saving song files, writing audio to flash, loading audio presets, etc etc). therefore, i have lots of calls to sceIoWrite and sceIoRead. i've been testing on CFW 3.90 both with and without ...

hi everyone, i'm the author of PSPSeq ( http://dspmusic.org/psp ). at the moment i do all my development on a 1.50 fat and have users use various apps like eloader or timemachine to run on new firmware. that's ok, but what i would really like is to get this program running natively on 3.xx/slim hard...

his name is hseiken. i met him through sdcompo. there are some of his songs posted in this thread: http://forums.sdcompo.com/viewtopic.php?t=345 heh yeah i chat with him pretty often and have heard these tracks. first time i heard them i was totally floored - i didn't even know PSPSeq could make mu...

my statement wasn't fair. to be honest, i haven't tried PSPSeq yet. I was thinking more along the lines of 2 years ago when I tried PSPkick and PSPrhythm. i have a friend who loves PSPSeq and uses it for serious projects gotcha. well if you take the time to give PSPSeq a try i'm sure you'll find it...

this is fascinating! has anybody has any good experience getting tracking software working on any emulators on PSP? after hours of turmoil, i eventually got octamed to work on PSPUAE, but the performance was so slow, and the sound so bad, that it was practically unusable. i have failed so far in my...

You might want to try -Os instead. It does save on code size (=icache misses), and is still pretty optimised. Try it and see. Also -fsingle-precision-constant, since doubles have no hardware support, and a float literal in C has double type (which promotes the whole expression to double). ok i just...

That sounds very strange. The PSP doesn't seem to have any major precipices like that. I wouldn't be surprised about a 10-20% decline, but it sounds like you're seeing much larger slowdowns. How big is your code/data? not very big, only a couple hundred kbytes. i first ran into this when i tried to...

You might want to try -Os instead. It does save on code size (=icache misses), and is still pretty optimised. Try it and see. Also -fsingle-precision-constant, since doubles have no hardware support, and a float literal in C has double type (which promotes the whole expression to double). ah good p...

hi - i'm looking for some pointers on how to optimize code written for the PSP. while i am a failrly experienced programmer, i haven't done much work with gcc or any work with the MIPS core. specifically: 1. are there any gcc build switches i really should/shouldn't use? right now i'm using '-O3 -fi...