Re: Invoking int 0x10 from a service

> You're right, Pistachio doesn't offer support for vm86 mode. I don't know
> too much about VESA drivers, but I am not sure if vm86 would solve your
> problem actually. vm86 mode only allows you to run 16-bit user-mode code; on
> interrupts or exceptions, the processor automatically enters the kernel and
> switches back to protected mode again. Thus, executing int $0x10 in a vm86
> compartment should bring you back into the kernel rather than to the
> corresponding BIOS function. I guess what you really need is to switch to
> real mode and then call int $0x10???

Yeah, in that case I suppose this involves adding OS support to handle
the interrupt in a correct way, i.e. switch again into vm86 mode and
branch to the address of the interrupt. This would be a little bit
overkill with respect to what I want to do.

Alex.