interupts

[ninjarider]

are the interupt calls that are in 16-bit code dos interupts or is it bios interupts. reason for this question is i got some assembly source code for an operating system (not sure if its stand alone or not but the fact that its bootable code suggest that it is standalone) and it has a lot of int 13h calls.

[Gustav]

> reason for this question is i got some assembly source code

IIRC MS has once claimed interrupts 20-3Fh to be reserved for MS-DOS
interrupts 0-1F are "reserved" by intel, but nevertheless IBM used some of them for their BIOS, among them int 13h for disk access.

[MichaelW]

ninjarider,

For a listing see Ralf Brown's Interrupt list.

An HTML version is here:

http://www.ctyme.com/rbrown.htm

And the download version here:

http://www-2.cs.cmu.edu/~ralf/files.html