Re: Hardware Interrupts

[tmoran@acm.org]

> >   BTW, what machine has a BIOS INT11h call?
> Good question!  I'm just going by the information in Kip R. Irvine's book
> "Assembly Language For Intel-Based Computers", third edition.
> I also found the same information in a book called "DOS 5: A Developer's
> Guide" by Al Williams (page 163).  This book does say 80286 - 80486.
  According to Ralf Brown's Interrupt List Int11h means different things to
different BIOSes - are you sure yours is one that returns an equipment list?

> Gnat 3.15p on a FreeBSD Unix 5.1
> > entering protected mode.
> Basically I've made my own bootloader and it will boot programs
  Does your bootloader load into 32 or into 16 bit mode?  Does that Gnat
generate the same?  The BIOS usually runs as 16, so if you are in 32
you may need to switch.
  (I recently had to use BIOS level disk IO calls and dug up an ancient
16 bit Ada 83 compiler to do it.  That compiler came with a vendor
supplied library for doing INT calls.)