I am currently taking a beginer class in Assembly. In my text, it has a list of BIOS interupts, but it doesn''t go into much detail about them (ie. How to use them). It has an expanded section on Int 21h and Int 10h, but other than that, it has a one line description. I was wondering if anyone knew if there was a good listing of the different interupts. I would like to know what they do and how to call them. I have tried doing searches, but all I come up with is pages that talk about Int 10h(most common) or a similar list to the one that I have(ie. no usefull information). I am probabally just doing a search on the incorrect words. Also, I was told by my teacher that all BIOS manufactures use the same interupts(which makes sense). I was wondering if there was a commitee that actually has created a ''BIOS Standard'' or if it was more of an implied standard. Thank you for your time and sorry for the long post!

The definitive interrupt list is Ralf Brown''s: http://www.ctyme.com/rbrown.htm. If you can find an old book called "The MS-DOS Encylopedia" that is a good reference also.

Yes, all BIOS''s use the same basic set of interrupts. That''s because the BIOS historically was called directly by applications and people didn''t want to have special cases for every different BIOS.

Just to make sure that you know, calling BIOS interrupts in modern version so of Windows won''t work. This is DOS-level stuff were talking about.

-Mike