Subj : Wayne King - BIOS interrupt
To   : borland.public.cpp.borlandcpp
From : "Rob C." <robb_christiansen@juno.com>
Date : Thu Aug 21 2003 02:10 pm


/*
Error messages:
Info :Making...
Info :Compiling C:\BC5\BIN\saveattr.cpp
Error:  saveattr.cpp(9,21):Undefined structure 'REGPACK'
Error:  saveattr.cpp(9,24):Too many initializers
Error:  saveattr.cpp(11,8):'r_ax' is not a member of 'REGPACK'
Error:  saveattr.cpp(12,6):Call to undefined function 'intr'
Error:  saveattr.cpp(14,15):'r_ax' is not a member of 'REGPACK'
Error:  saveattr.cpp(22,8):Function should return a value
*/

#include<dos.h>

int readattr(void)
{
	struct REGPACK rp = {0};

rp.r_ax = 0x0800;
intr(0x10, &rp);

return rp.r_ax & 0x00ff;
}

int main()
{
readattr(); //-- what type is  returned? How would I print/store
	    //-- the results?
return;
}

/*
It can't find dos.h, even when I include the full  path, even 
though I put a copy of dos.h in the same directory, even when I 
copy the whole thing into the program!

Do I have to treat this somehow with target-expert. Here are the 
error messages when changed to *.C (different):

Info :Making...
Info :Compiling C:\BC5\BIN\saveattr.c
Error:  saveattr.c(21,21):Undefined structure 'REGPACK'
Error:  saveattr.c(23,8):Undefined symbol 'r_ax'
Warn :  saveattr.c(24,16):Call to function 'intr' with no prototype
Error:  saveattr.c(26,15):Undefined symbol 'r_ax'
Warn :  saveattr.c(27,2):Undefined structure 'REGPACK'
*/

.