mirror of https://github.com/lianthony/NT4.0
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
662 B
42 lines
662 B
/*[
|
|
|
|
cwd.c
|
|
|
|
LOCAL CHAR SccsID[]="@(#)cwd.c 1.5 02/09/94";
|
|
|
|
CWD CPU functions.
|
|
------------------
|
|
|
|
]*/
|
|
|
|
|
|
#include <insignia.h>
|
|
|
|
#include <host_def.h>
|
|
#include <xt.h>
|
|
#include <c_main.h>
|
|
#include <c_addr.h>
|
|
#include <c_bsic.h>
|
|
#include <c_prot.h>
|
|
#include <c_seg.h>
|
|
#include <c_stack.h>
|
|
#include <c_xcptn.h>
|
|
#include <c_reg.h>
|
|
#include <cwd.h>
|
|
|
|
|
|
/*
|
|
=====================================================================
|
|
EXTERNAL ROUTINES STARTS HERE.
|
|
=====================================================================
|
|
*/
|
|
|
|
|
|
GLOBAL VOID
|
|
CWD()
|
|
{
|
|
if ( GET_AX() & BIT15_MASK ) /* sign bit set? */
|
|
SET_DX(0xffff);
|
|
else
|
|
SET_DX(0);
|
|
}
|