Category : Dbase (Clipper, FoxBase, etc) Languages Source Code
Archive   : NFLIB21.ZIP
Filename : FTINT86.CH

/*
* File......: FTINT86.CH - Header file for users of FT_INT86() function
* Author....: Ted Means
* Date......: $Date: 01 Jul 1992 01:00:52 $
* Revision..: $Revision: 1.3 $
* Log file..: $Logfile: C:/nanfor/src/ftint86.chv $
*
* This is an original work by Ted Means and is placed in the
* public domain.
*
* Modification history:
* ---------------------
*
* $Log: C:/nanfor/src/ftint86.chv $
*
* Rev 1.3 01 Jul 1992 01:00:52 GLENN
* Rodgers Moore submitted some fixes to the highbyte() and lowbyte()
* macros that take negative numbers into account. Ted Means and
* Glenn Scott added #defines for the Flag registers. General cleanup
* of formatting, etc.
*
*
* Rev 1.2 15 Aug 1991 23:08:48 GLENN
* Forest Belt proofread/edited/cleaned up doc
*
* Rev 1.1 27 May 1991 13:25:18 GLENN
* Revised for new version of ft_int86() package, which is written in C
* (CINT86.C), assembler (AINT86.ASM).
*
* Rev 1.0 01 Apr 1991 01:02:38 GLENN
* Nanforum Toolkit
*
*
*/

#ifndef __FTINT86_CH__
#define __FTINT86_CH__

#define INT86_MAX_REGS 10

#define AX 1
#define BX 2
#define CX 3
#define DX 4
#define SI 5
#define DI 6
#define BP 7
#define DS 8
#define ES 9
#define FLAGS 10

#define FLAG_CARRY 0 // Carry flag
#define FLAG_PARITY 2 // Parity flag
#define FLAG_AUX 4 // Auxillary flag
#define FLAG_ZERO 6 // Zero flag
#define FLAG_SIGN 7 // Sign flag
#define FLAG_TRAP 8 // Trap flag
#define FLAG_INT 9 // Interrupt flag
#define FLAG_DIR 10 // Direction flag
#define FLAG_OFLOW 11 // Overflow flag

#translate makehi( ) => (() * 256)
#translate REG_DS => .T.
#translate REG_ES => .F.
#translate highbyte( ) => (int( () / 256 ) + iif( () >= 0,0,255))
#translate lowbyte( ) => (int( () % 256 ) + iif( () >= 0,0,256))
#translate carrySet( ) => (ft_isbiton((), FLAG_CARRY))

#endif // __FTINT86_CH__