Assembly interrupts and Developers handbook

[David Schultz]

On Sat, Aug 02, 2003, pat bey wrote:
> Secondly, What can I find a list of other interrupts within
> FreeBSD like the int 80h.  Or is this the only interrupt. Like
> example interrupt for video stuff, disk access ....etc. .etc

On x86, all system calls are made through int 80h with %eax set to
the syscall number.  See src/sys/kern/syscalls.master.  In
general, you don't access the hardware directly unless you're
writing a device driver.