Question about Olly and interrupts

[0xByte]

Hello everyone.

Is it normal that olly can't handle interrupts like int 12h? If I try to inline-assemble interrupts i always get an "access violation when reading [FFFFFFFF]" followed by a "debugged program was unable to process exception". Could someone please explain the backgrounds of that error and whether it is possible to make Olly handle these interrupts? (sorry i'm new to asm and olly ._.)

Thank you and best regards

[deepzero]

What do you mean?

12h is not a valid opcode, hence an exception is thrown when you attempt to execute it.

If you dont catch the exception, the program crashes.

[0xByte]

And how do you catch that in olly?