forums.ps2dev.org

Now that trophies are out, I for one am interested gaining some new friends in the spirit of a little friendly competition. The 3 or so people I know IRL that have PS3s aren't really cutting it anymore :)

So I'll start.
Funnily enough, on PSN I go by 'cheriff'

Who's next?

Hi, Its not a HW limitation, Linux does preemptive multithreading just fine. I guess it was decided that the majority of uses (ie games) will take over the entire system so not need the overhead of being preempted every 5ms. If guys want this then can (and at least 1 game does) setup their own timer...

I'm hungry.

threads.cpp potatoThread.stack = (void*)malloc(0x800); Should the stack not instead be: potatoThread.stack = (void*)malloc(0x800) + 0x800 - 4; ?? To account for the whole growing down thing? Once these threads start making function cal...

Well, getting it running on Linux on PS3 usually just involves a recompile. But then it'd only be using the PPU and will run like a dog's breakfast. But it will run, yes. If you want it to run well, then the code needs to be changed to divide work up into small chunks, dispatch as many as possible t...

Now I cut everything out, even the display flip and got a fps count of ~100k - ~120k fps. But when I cut out the input handling, I get ~600k - ~700k fps This is all sdl code! I have never thought that this could be the bottleneck, because the input handling is just a bit switch - case stuff. Hi, wh...

The -G option can change how you application references global vars. Say you want to load the value of some global variable, you ordinarily would have to spend two instructions loading the high and low halfwords of the address into a register, and then de-reference that to get your number. With gp-r...

Man, that was a tough captcha - between myself and a coworker it took about 12 tries. "uhh, backwards question mark?"
I wonder if it doesn't incorporate one of those ink-blot tests in an attempt to gauge the sanity of prospective members ...

Also, the internals of Android are currently quite ARM-specific, including runtime-generated code of both 16-bit THUMB and the regular 32bit varieties. These are specific to ARMv5, it is all but impossible to get the android stack running on a device such as the openMoko phone which contains an ARMv...

Just a guess - if he builded whole toolchain under 64bit OS,then he has PSP-GCC and PSP-G++ build in 64bit versions.I know that they will compile code for PSP cpu,but it may have some characteristics of 64bit code - for example,64bit gcc will replace LONG INT with LONG LONG INT as it's 64bit variab...

The most common 64 bit programming error is forgetting that pointers aren't 32 bits anymore (on x86_64 at least... some 64 bit CPUs still use 32 bit pointers). So if you store a pointer to an int variable, you lose the top 32 bits of the pointer address. stdint.h makes defines for various types, so...

From what I've learned working with other archs, GPREL are usually used for accessing global vars, and literal pools. if you'll excuse my rusty mips and pseudo-asm, doing stuff GP relative allows you to turn a code seuqence such as: loadhigh r0, 0x0010 // set top 16 bits of address load r0, 0x1230 /...

califrag: Would it be possible for you to restore youe original post? Or at least something similar please? One of the great thing about forums (as opposed to say, IRC) is that the topics stay up and someone searching along at a later date may have similar issues - keeping these things up will help ...

PS: dlanor, if you are still following this thread, i found out that probably the reason why i cannot load the kernel at 0x8010000 is that i'm accessing kseg0 in user mode, is there a simple way to make ulauchelf change the mode to kernel? It is possible for your application to put itself in kernel...

I just tried to run the ELF in your demo and it just segfaults? Any tricks to running that? I am running it under kboot. I am about to try and install is as an otheros to see what happens. I havent tried this yet, but since the elf is built to run on baremetal (well, bare hypervised metal anyway) y...

I'd say you ask your users to keep the WADs in a certain location on a USB stick/drive. Then you simply bundle the open version of usbd.irx and attempt to open "mass:somefile.wad" Otherwise you're dependant on either HDD, CD, MC or host - which would require either modchips, ps2link, or ex...

Have a boolean variable to act as a flag to keep track of current state of the button. Each time you read the pad in the game loop: If button is not down, clear flag. If button is down, and the flag is not set, then set the flag and perform your action as this is the first time the button was just p...

http://lukasz.dk/programming/playstation-2/ps2link-debugging/ is a link for doing it on ps2 with ps2-link. And the procedure would be almost exactly the same. Simply add -g to the CCFLAGS (or similar) variable in the makefile, and use psp-addr2line on you elf as explained in the document above. Unf...

compile with -g, then use psp-addr2line with the EPC adress to find out where it actually crashes. Have you done this? It might be time to crack out the dissasembler and see exactly which instruction it is faulting on, and what it is attempting to do... am i just declaring and initializing my varia...

All my ps1 av cables work just fine in my ps2, so I'd hazard a guess that the pinouts are the same.

Yeah, although what some others and myself do is copy the URL to the IRC channel, where more often than not a mod is lurking and can clean it up...

if BITS equals to 1 then the right flag in X will be set with the value of Y (i.e, bit 0 of Y). Yeah, I was contributing to the discussion on potential use of C bitfileds, and less on the best way for this particular task. My asm is a bit rusty, but for setting and clearing indivitual bits hlid's c...

Personally, I avoid bitfields like the plague. They are compiler and endian dependant, which cause headaches with regard to portability. I've also read they can cause gcc to generate icky code, although I personally haven't examined this to make sure, I just never use them :) Instead: #define GET_F...

Bah. I dont know the difference between reoply and edit.
Read on ...

(ps - whats with the delay between posts/edits?)

ps3fan wrote:according to my info you just have access to the frame buffer from within linux..

Really? I was afaraid of this. If so, that really blows. :(

The kernel is in the PS2's ROM. There's a bunch of routines there to handle
threads and semaphores and other stuff.

The PS2 kernel pretty much is the BIOS, all it does in implement the functionality you've seen in headers and kernel.S.

easiest way would be to name it level02.lua.
May not be what you wanh, tho...

umm, http://ps2dev.org/ usually.

Theres a button top right labelled "START HERE" which is a good place to start, explains all loaders, clients, etc.

Then on left is a link "LOADERS" withall the loaders and pc side clients available.

How do I utilize it? Umm... Secret? Haha... Not sure about this one. You run ps2client on you PC which connects to ps2link over the network, and does nify thinks like sendig ELF programs over to be run on the ps2. Also, with regards to the USB cable, Just because you have a cable that fits ps2 and ...

well, I thought in MIPS64, v0 is 64-bit wide and not 32-bit wide. This is in fact true on a 64 bit platform. From some random google search on the mpis64: LD rt, offset(base) Load doubleword. The contents of the 64-bit doubleword at the memory location specified by the effective address are loaded ...