That's not strictly true (although in this case it probably is): If your memory is not RAM (*random access* memory), if it maybe even has a big penalty for accesssing different places in it (the so-called "seek time"; esp. bad for CD/DVD), then it does help if your data stream is interleaved, in fact it can make a substantial difference. Stress on *can*, however.sev wrote:Imagine this. You have 2 complex and independent expressions to calculate, each one, say, in 3 steps. Will it ease claculation if you will mix those stages, i.e. instead of calucalting A A A B B B you do A B A B A B. No, amount of computations will be exactly the same. So no performance gain will be here. Only one different thing is that you will have only 1 file to open, nothing else.
Alas, Eugene is of course still right in this case, since the PSP doesn't use a CD drive, but rather flash RAM, where this is indeed a useless technique