From: Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Problems adressing memory variable
Date: Sat, 15 Mar 2003 11:43:57 CST
Organization: Rice University, Houston TX
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> Ok, I think I've gotten most of the bugs worked out by now.  But the silly
> thing still won't work...  What am I doing wrong this time?

>     output.x.ss = __tb & 0x0f;

The interrupt call uses ES:BP, not SS:BP

Not sure if that fixes it, but I know you rarely set SS to a __dpmi_int 
call.