devkitPro

Ah HBlank interrupts.. You could allow nesting in the vcount interrupt so the hblank interrupts don't get missed (I don't suppose you're doing anything sound related in them).


void vcount(void)
{
REG_IME = 1; // allow interruption
if( !sound_locked )
mmFrame();
else
sound_needs_update=1;
}

Huh, that code should work okay...

Only threat I see is if a VBlank interrupt occurs between mmSetVBlankHandler(NULL) and VBlankIntrWait(); which isn't very likely to happen.

Does it make a constant distortion noise when the framerate drops? How much work are you doing inside "// Update GBA HW ...

What color depth does the PCX have? You say it uses up 128k of VRAM A, which is the entire bank. A 256x192 16bpp image will use 96KB of memory, leaving you with 32k for the console. BG_MAP_BASE(24) will start at the 48k mark, which is still inside the 96k for the 16bpp image.

Hm, interesting bug there. I made a quick test and couldn't get the error to reproduce. Could you upload one of the modules somewhere or e-mail one to [email protected] so I can check it out? Thanks.

massaro wrote:Anyway, thanks again. Great work!

Your welcome.

massaro wrote:doesn't seem to include the "asm_include" directory...

Ah, looks like that folder got missed, thanks for letting us know.