question about the architecture of mbx

liboyang_bj · Post by **liboyang_bj** » Wed Oct 01, 2008 4:09 am

Hi, i'm newbie here and,

somebody knows about the architecture of mbx ?

Is it a unix-like system or an independent os built by sony guys ?

thx

liboyang_bj · Post by **liboyang_bj** » Thu Oct 02, 2008 12:18 am

tested a psp program:

darryl@zoltar tests $ file hello
hello: ELF 32-bit LSB MIPS-II processor-specific, MIPS, version 1 (SYSV), not stripped

So it means psp using a unix like os plus XMB GUI ?

And, this system(or chipset) does not support MMU, is it right ?

THX

kralyk · Post by **kralyk** » Thu Oct 02, 2008 5:30 am

No
psp's firmware is not a monolithic kernel like unix/linux,
it's actually a bundle of modules that are loaded one by one and cooperate in a host/slave or maybe server/client manner...
its much more simple than unix-like system.
it uses ELFs or PRXs, which is relocatable ELF, or ~PSP which is encrypted and more less unknown, but definitely meaningless for hombrew development.

oh and yes theres no MMU...

This is just a brief info and Im not an expert, so you might want to read these excellent documents:
http://ps2dev.org/psp/Tutorials