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Why not just add a simple loop to upconvert 8bit audio to 16-bit? You should have processing power to spare..

1. Get the latest PSPSDK 2. Take a look at the usb/storage sample, rip the USB code out into a separate nice little file 3. Add the file to your project, and call it at startup. Results: As soon as you have started your program on your PSP, you'll be able to USB transfer in new builds of your progra...

The latest toolchain script will also download and install PSPSDK, which includes a bunch of simple samples.

The included build.mak that all the sample makefiles include helps you make eboots. Just start your projects by taking a sample and hack it :)

Hehe, I had the same idea, though I ported LuaPlus, which has incredibly sweet integration with C++. You can do this: //C++: int hello(float a, const char *instr) { //do whatever } lua->RegisterDirect("hello", hello); and then lua c...

Yes sorry you are right, it is executed (jump destination computed) first, but the jump is not actually taken until after another instruction is executed. Just making sure to point this out because it's a pretty alien concept for x86 people :)

Hmm I meant to tell you about it, I thought I had, but I probably forgot :)

Yeah, chip-nat has his scaling factors wrong. In the VIEWPORT registers, he writes 480 and -272 where puzzle bobble writes 240 and -136, according to my emulator. Those values are what I use and they give correct dimensions.

By the way, you do know about delay slots?
That is:

jal mysub
xor $1, $3, $2
addiu $1,$0,$0

In this case, xor will be executed before the jal is taken, and addiu will be executed by the time the function returns. That is, jumps are delayed by one cycle.

Krevnik, it's not that simple. Problem is that PSX has a lot of memory mapped I/O, so yes, every single read/write will have to be checked if it is to one of these regions. PSX had 2MB of RAM (and a similar amount of VRAM) so that is not much of a problem but the different memory map is. I'd advise ...

You got it right, sir.

0x40000000 is sure a valid cache bypass, the question is if it has write combiners so it would be as fast as than writing normally and then flushing...

Yes indeed, would be interesting. Does it have access to main memory?

Cool stuff. May I ask you what ELF loader you are using, or if you wrote your own? I've done the basics of an emu too, it runs Puzzle Bobble enough to get some display lists, but stdlib functions crap out on me, looks like some relocations have gone horribly wrong.. And now I find it more fun to cod...

lantus, argv[0] contains the path to your eboot.pbp. use that..

Avoid double precision math on the PSP as it is likely to be dog slow because of the lack of double precision floating point hardware. It has a fast single precision FPU though, not to speak of the VFPU which still has not been publically documented..

Well the way the GPU interface works is that Flush (IIRC, I call it Flush in my library which is not identical to libGu) sets the GPU "Stall" address, i.e. where it should stop reading data. So to get the GPU and CPU running asynchronously, the CPU writing display lists for the GPU to cons...

If it came with a game the packfile format can be anything the game designers felt like making it. Your only choice is breaking out the hex editor and try to figure it out. Look for filenames, offsets, etc.

I think writing this recompiler (actually a binary translator) shouldn't be too hard. I believe that r3000 is a subset of r4000 code. No instruction code translation is really necessary. I can let the code execute natively up until a CALL or JUMP statement. For a call or a jump, addresses need to b...

Keep in mind that you need to translate memory accesses. Can't let any sw or lw execute natively, you need to replace them with calls to memory read/write functions..

What GFX plugin are you integrating?

sceGu is a static lib, not a PRX module. Where does the lib live? Uhm, he said it was STATIC. Linked into each executable. sceGu is just a wrapper API that generates display lists. sceGe is what you use to send these display lists to the gfx card. Incidentally, chip-nat har cloned large parts of sc...

You want to draw a bunch of circles offset in x/y by some suitable amount based on the circle number and time, and radius and offset scaled by somefactor*(1/distance) where distance would be the number of the circle scaled by some value.

You should clear the screen every frame and redraw the dot tunnel every frame, if you're trying to do the kind of dot tunnel I'm thinking of :)

If you choose 1 mipmap, the right 16bit color format and disable swizzling, my texture converter can be used for regular bitmaps to copy to the framebuffer if you also strip off or ignore the header, which should be 32 bytes in this case. I should probably add functionality to export raw bitmaps and...

Ah. Well for fast text rendering the common method is to stuff the entire alphabet into a single texture, ideally only containing an alpha channel. This way you can draw text super quickly by just drawing an array of textured quads. Of course when originally generating the font texture you also stor...

Yeah, that would go excellently with my PSP texture format converter that I released yesterday ( download is here: http://www.dtek.chalmers.se/~tronic/PSPTexTool.zip ) to be able to draw fonts with hardware very quickly, especially if you can make your tool output entirely white pngs with the actual...

Just port DOSbox... look at how much time they have needed to get that far.

Such a thing could be written. I don't know of anyone doing it so go ahead, it would be useful.

long is also 32-bit, while long long is (emulated) 64-bit.

Well, if the programmers adds support to read in an external picture file as a background, then you can do it easily. It's all up to the programmers how much skinning support there is in the applications. You could contact them or make a little advertisement "Artist available for free for PSP a...

Nah it's integrated in my emulator which i can't release a binary of because I currently use ELFIO as a temporary solution (it's LGPL) and I mean to replace it with my own ELF reading as I really don't like the GPL/LGPL very much and I haven't managed to compile ELFIO as a DLL.