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73 lines
2.4 KiB
Plaintext
73 lines
2.4 KiB
Plaintext
/*
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* File......: Header file for users of ft_int86() function
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* Author....: Ted Means
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* CIS ID....: 73067,3332
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*
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* This is an original work by Ted Means and is placed in the
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* public domain.
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*
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* Modification history:
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* ---------------------
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*
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* Rev 1.5 07 Jan 1993 08:01:04 GLENN
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* We forgot to escape the less-than symbols in the HIGHBYTE() and
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* LOWBYTE() #translates.
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*
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* Rev 1.4 31 Dec 1992 21:35:46 GLENN
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* Some typos made it into the most recent version of ftint86,
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* particularly within the HIGHBYTE() macro. This has been fixed.
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*
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* Rev 1.3 01 Jul 1992 01:00:52 GLENN
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* Rodgers Moore submitted some fixes to the HIGHBYTE() and LOWBYTE()
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* macros that take negative numbers into account. Ted Means and
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* Glenn Scott added #defines for the Flag registers. General cleanup
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* of formatting, etc.
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*
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*
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* Rev 1.2 15 Aug 1991 23:08:48 GLENN
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* Forest Belt proofread/edited/cleaned up doc
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*
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* Rev 1.1 27 May 1991 13:25:18 GLENN
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* Revised for new version of ft_int86() package, which is written in C
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* (cint86.c), assembler (aint86.asm).
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*
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* Rev 1.0 01 Apr 1991 01:02:38 GLENN
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* Nanforum Toolkit
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*
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*/
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#ifndef __FTINT86_CH__
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#define __FTINT86_CH__
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#define INT86_MAX_REGS 10
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#define AX 1
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#define BX 2
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#define CX 3
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#define DX 4
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#define SI 5
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#define DI 6
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#define BP 7
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#define DS 8
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#define ES 9
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#define FLAGS 10
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#define FLAG_CARRY 0 // Carry flag
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#define FLAG_PARITY 2 // Parity flag
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#define FLAG_AUX 4 // Auxillary flag
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#define FLAG_ZERO 6 // Zero flag
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#define FLAG_SIGN 7 // Sign flag
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#define FLAG_TRAP 8 // Trap flag
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#define FLAG_INT 9 // Interrupt flag
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#define FLAG_DIR 10 // Direction flag
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#define FLAG_OFLOW 11 // Overflow flag
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#translate MAKEHI( <X> ) => ( ( <X> ) * 256 )
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#translate REG_DS => .T.
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#translate REG_ES => .F.
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#translate HIGHBYTE( <X> ) => ( Int( iif( ( <X> ) \< 0, 65536 + ( <X> ), ( <X> ) ) / 256 ) )
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#translate LOWBYTE( <X> ) => ( iif( ( <X> ) \< 0, 65536 + ( <X> ), ( <X> ) ) % 256 )
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#translate CARRYSET( <XFLAGS> ) => ( hb_bitTest( <XFLAGS>, FLAG_CARRY ) )
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#endif // __FTINT86_CH__
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