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8 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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11 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
14 * $Source: /cvs/cvsroot/d2x/include/u_dpmi.h,v $
15 * $Revision: 1.1.1.1 $
17 * $Date: 2001-01-19 03:30:16 $
19 * Prototypes for DPMI services.
21 * $Log: not supported by cvs2svn $
22 * Revision 1.1.1.1 1999/06/14 22:02:25 donut
23 * Import of d1x 1.37 source.
25 * Revision 1.9 1995/01/14 19:20:14 john
26 * Added function to set a selector's base address.
28 * Revision 1.8 1994/11/28 20:22:03 john
29 * Added some variables that return the amount of available
32 * Revision 1.7 1994/11/15 18:26:38 john
35 * Revision 1.6 1994/11/07 11:35:05 john
36 * Added prototype for real_free
38 * Revision 1.5 1994/10/27 19:54:48 john
39 * Added unlock region function,.
41 * Revision 1.4 1994/09/27 18:27:56 john
42 * Added pragma to make inp,outp,enable,disable intrinsic
44 * Revision 1.3 1994/09/27 11:54:45 john
45 * Added DPMI init function.
47 * Revision 1.2 1994/08/24 18:53:51 john
48 * Made Cyberman read like normal mouse; added dpmi module; moved
49 * mouse from assembly to c. Made mouse buttons return time_down.
51 * Revision 1.1 1994/08/24 10:22:48 john
62 typedef struct dpmi_real_regs {
66 uint reserved_by_system;
72 ushort es,ds,fs,gs,ip,cs,sp,ss;
76 #pragma intrinsic( inp );
77 #pragma intrinsic( outp );
78 #pragma intrinsic( _enable );
79 #pragma intrinsic( _disable );
82 /* inp & outp are functions in DJGPP, while inportb & outportb are inlined */
83 #define inp(port) inportb(port)
84 #define outp(port,value) outportb(port,value)
85 #if 0 /* only causes problems */
88 #define _enable() __asm__ __volatile__ ("sti")
89 #define _disable() __asm__ __volatile__ ("cli")
94 #include "sys/nearptr.h"
95 #define DPMI_real_segment(P) ((((uint)(P)-(uint)(__djgpp_conventional_base)) >> 4) & 0xffff)
96 #define DPMI_real_offset(P) (((uint)(P)-(uint)(__djgpp_conventional_base)) & 0xf)
98 #define DPMI_real_segment(P) ((((uint) (P)) >> 4) & 0xFFFF)
99 #define DPMI_real_offset(P) (((uint) (P)) & 0xF)
102 // Initializes dpmi. Returns zero if failed.
103 extern int dpmi_init(int verbose);
104 // Returns a pointer to a temporary dos memory block. Size must be < 1024 bytes.
105 extern void *dpmi_get_temp_low_buffer( int size );
106 extern void *dpmi_real_malloc( int size, ushort *selector );
107 extern void dpmi_real_free( ushort selector );
108 extern void dpmi_real_int386x( ubyte intno, dpmi_real_regs * rregs );
109 extern void dpmi_real_call(dpmi_real_regs * rregs);
110 extern int dpmi_lock_region(void *address, unsigned length);
111 extern int dpmi_unlock_region(void *address, unsigned length);
112 // returns 0 if failed...
113 extern int dpmi_allocate_selector( void * address, int size, ushort * selector );
114 extern int dpmi_modify_selector_base( ushort selector, void * address );
115 extern int dpmi_modify_selector_limit( ushort selector, int size );
119 // Sets the PM handler. Returns 0 if succssful
120 extern int dpmi_set_pm_handler(unsigned intnum, void far * isr );
122 extern int dpmi_set_pm_handler(unsigned intnum, void * isr );
125 extern unsigned int dpmi_virtual_memory;
126 extern unsigned int dpmi_available_memory;
127 extern unsigned int dpmi_physical_memory;
128 extern unsigned int dpmi_dos_memory;