mixframea.asm

单片机快速入门原程序

;*****************************************
;	ASM file MixFrameA.ASM for C&ASM mix programing
;==========================
; subroutines that may accessed from Frame.C and startup.a51 models
;--------------------------
public DataInit,Timer0Int,UartInt

;==========================
; Variables that may accessed from spnlc.c and startup.a51 models
;--------------------------
public AsmArg

;==========================
; external C functions that may accessed from this model
;--------------------------
extrn code (?C_STARTUP)

;==========================
; external subroutines that may accessed from this model
;--------------------------
extrn data (CArg)

;-----------------------------------------
$include (C8051F000.inc)
;=================================
name	DNLD_SUB
dnldcseg   SEGMENT   CODE	;our code segment
;=================================
; New IRAM(80-FF) Variable definition for New board 
;---------------------------------
	DSEG	at 20h
AsmArg:		ds	2	;int defined in ASM

;=========================================
	rseg	dnldcseg	;use our own code segment
;=========================================
; Data initialization for startup
;-----------------------------------------
DataInit:	;original L287D

		mov		CArg,#3
		ret
;==========================
;  UART INT routine
;--------------------------
UartInt:
	PUSH	ACC
	PUSH	DPH
	PUSH	DPL
	PUSH	PSW

	;add your codes here

	POP	PSW
	POP	DPL
	POP	DPH
	POP	ACC
	RETI	
;---------------------
;==========================
;  Timer0 INT,excutew every 10ms
;--------------------------
Timer0Int:
	PUSH	ACC	;2T
	PUSH	B	;2T
	PUSH	DPH	;2T
	PUSH	DPL	;2T
	PUSH	PSW	;2T
	MOV	PSW,#8	;3T
	CLR	TR0	;2T,Total=15T	

	;add your codes here

	POP	PSW
	POP	DPL
	POP	DPH
	POP	B
	POP	ACC
	RETI	
;=====================
	END