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Amiga ACS 1998 #6
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amigaacscoverdisc1998-061998.iso
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descent
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dpmi.h
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1998-06-08
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/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
*/
/*
* $Source: f:/miner/source/bios/rcs/dpmi.h $
* $Revision: 1.9 $
* $Author: john $
* $Date: 1995/01/14 19:20:14 $
*
* Prototypes for DPMI services.
*
* $Log: dpmi.h $
* Revision 1.9 1995/01/14 19:20:14 john
* Added function to set a selector's base address.
*
* Revision 1.8 1994/11/28 20:22:03 john
* Added some variables that return the amount of available
* memory.
*
* Revision 1.7 1994/11/15 18:26:38 john
* Added verbose flag.
*
* Revision 1.6 1994/11/07 11:35:05 john
* Added prototype for real_free
*
* Revision 1.5 1994/10/27 19:54:48 john
* Added unlock region function,.
*
* Revision 1.4 1994/09/27 18:27:56 john
* Added pragma to make inp,outp,enable,disable intrinsic
*
* Revision 1.3 1994/09/27 11:54:45 john
* Added DPMI init function.
*
* Revision 1.2 1994/08/24 18:53:51 john
* Made Cyberman read like normal mouse; added dpmi module; moved
* mouse from assembly to c. Made mouse buttons return time_down.
*
* Revision 1.1 1994/08/24 10:22:48 john
* Initial revision
*
*
*/
#ifndef _DPMI_H
#define _DPMI_H
#include "types.h"
typedef struct dpmi_real_regs {
uint edi;
uint esi;
uint ebp;
uint reserved_by_system;
uint ebx;
uint edx;
uint ecx;
uint eax;
ushort flags;
ushort es,ds,fs,gs,ip,cs,sp,ss;
} dpmi_real_regs;
#pragma intrinsic( inp );
#pragma intrinsic( outp );
#pragma intrinsic( _enable );
#pragma intrinsic( _disable );
#define DPMI_real_segment(P) ((((uint) (P)) >> 4) & 0xFFFF)
#define DPMI_real_offset(P) (((uint) (P)) & 0xF)
// Initializes dpmi. Returns zero if failed.
extern int dpmi_init(int verbose);
// Returns a pointer to a temporary dos memory block. Size must be < 1024 bytes.
extern void *dpmi_get_temp_low_buffer( int size );
extern void *dpmi_real_malloc( int size, ushort *selector );
extern void dpmi_real_free( ushort selector );
extern void dpmi_real_int386x( ubyte intno, dpmi_real_regs * rregs );
extern void dpmi_real_call(dpmi_real_regs * rregs);
extern int dpmi_lock_region(void *address, unsigned length);
extern int dpmi_unlock_region(void *address, unsigned length);
// returns 0 if failed...
extern int dpmi_allocate_selector( void * address, int size, ushort * selector );
extern int dpmi_modify_selector_base( ushort selector, void * address );
extern int dpmi_modify_selector_limit( ushort selector, int size );
// Sets the PM handler. Returns 0 if succssful
extern int dpmi_set_pm_handler(unsigned intnum, void far * isr );
extern unsigned int dpmi_virtual_memory;
extern unsigned int dpmi_available_memory;
extern unsigned int dpmi_physical_memory;
extern unsigned int dpmi_dos_memory;
#endif