Date: Sun, 18 Jun 1995 13:11:59 +0300
From: eliz AT is DOT elta DOT co DOT il (Eli Zaretskii)
To: jmccawle AT cs DOT uno DOT edu
Subject: Re: CD-ROM in DJGPP
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu

>      I downloaded a file called cdrom_c.zip which is a library of routines
> for playing cdrom music using MSCDEX.  I am trying to port them over to 
> DJGPP and have not been too successful.  I am using _go32_dpmi_simulate_int for
> [snip]
>      Anyone have any tips they could give me on this type of thing?  This is 
> a pretty specific problem, but any code slightly related to it would make me
> very happy!  I want to know exactly what this interrupt expects, but I haven't
> found any helpful documentation.

Look in the DJGPP FAQ list (available as faq102.zip from the same place
you get DJGPP).  Chapter 18 there describes how to issue software 
interrupts from DJGPP programs.  (Btw, you don't have to allocate buffer
in low memory, if the 4KB-long transfer buffer provided by DJGPP is long
enough for you; this is also explained in the FAQ.)

For the description of the specific functions of interrupt 2Fh, look in
Ralf Brown's Interrupt List (available as INTER46[A-F].ZIP from any
SimTel mirror, in the msdos/info directory).