Please helpme to load yabasic for ps2

[asnara]

I had downloaded a lot of yabasic isos but some load perfectly but just to show a gray-blue screen with nothing. If I set my matrix chip to run in PAL mode I can see barely the yabasic intro screen with a keyboard layout diagram (my TV does not support PAL)

Other Isos like one posted here (patched to NTSC) just show a black screen or just try to load and reboot the ps2 to back to ps2 main screen (that with mem cards and dvd disk)

Why I can't load Yabasic? Please help me!!

Greets

[asnara]

Somebody? please!! there are too little info online about yabasic, Im trying to debug yabasic in pcsx2 to unlock the "ntsc" mode, but I just know a little of asm x86 and this asm does not look the same, and pcsx2 hangs very easily stteping the execution code

[barf]

YABASIC is for PS2, it works from the demo disk, but does not work from HDL AFAIK.

[asnara]

YABASIC is for PS2, it works from the demo disk, but does not work from HDL AFAIK.

But I'm running yabasic from a cd. My problem is:

When my MATRIX chip is working in PAL video mode I can see yabasic working (even the initial beep sound good) but my tv is NTSC so I can't see very well the screen contents in pal (because its flickers horizontally).

If my matrix chip is working in NTSC, COLOR, PAL60 mode, Yabasic just does not start, just a gray/blue screen appear, I don't hear the startup sound either. Even with I tried to patch YABASIC for NTSC, and downloaded a NTSC version, just dont work.

Im trying to debug yabasic to see where it jumps to the "exit" code when the ps2 is in NTSC mode. If someone could give me a hint, it will be appreciated.

[asnara]

I founded 3 exits (syscall 0004) in the yabasic.elf code, but even disabling this exits, the problem still continues.

I'm thinking that is not a "exit" because the blue background must be generated as a bucle in the yabasic code. Now Im trying to detect where is the syscall to know if the ps2 is in pal or ntsc. I think is something like "GetGS___" but syscalls arent documented so well, anyone knows anything of this?