🚀 go-pugleaf

Is there a beginner-level document somewhere that tells how to 
use the interrupts and interrupt functions in DOS?

I see lots of references to these...I suppose people use them to have
finer control over the hardware/system/bios than provided by the 
functions usually provided by the compilers.  Is this right?

Like for instance:  I want to write a simple program to get/put chars to 
COM1.  Some compilers (like MIX PowerC) have a few builtin functions to 
do this.  I know, however, that there are interrupts (are these in bios
or dos?) that do the same.

Why would _I_ use one over the other?  How would I know when which method
is appropriate?  How would I do the int method?



thanx for your _Patience_ :-)




(Flames about compilers to /dev/null, unless you care to donate something)


--
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Michael G. Hart   hart@blackjack.dt.navy.mil /  mhart@oasys.dt.navy.mil
                In Support of the Men and Women of Desert Storm 
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