system.inc

来自「基于HS108设计的红外水位检测仪」· INC 代码 · 共 37 行

.autoimport
;*********************************************
;
;	register 0x07 0x08 0x1F reserved for interrupt
;
;**********************************************

;************************************************************
;															;
;		operational register and flag setting				;
;															;
;************************************************************
	pc			EQU		0x02		;Program Counter Register
	SelRamR 	EQU 	0x04		;RAM Select Register
	DirR		EQU 	0x00		;Indirect Addressing Register
	sr			EQU 	0x03		;Status Register
	cflag		EQU 	0			;bit number of the carry flag
	dcflag		EQU 	1			;bit number of the auxiliary carry flag
	zflag   	EQU 	2			;bit number of the zero flag
	sbit		EQU 	7			;bit number of the sign

	
;************************************************************
;															;
;		0x10~0x1E Register reserved for c compiler			;
;															;
;************************************************************
	eax			EQU 	0x10
	ax 			EQU 	0x10
	al 			EQU 	0x10
	ecx			EQU 	0x14
	cx 			EQU 	0x14
	cl 			EQU 	0x14
	bp 			EQU 	0x18
	sp 			EQU 	0x19
	pr0 		EQU 	0x1a
	pr1 		EQU 	0x1b