hello.asm

8051 interrupt assemble code

;--------------------------------------------------------
; File Created by SDCC : FreeWare ANSI-C Compiler
; Version 2.6.0 #4309 (Nov 10 2006)
; This file generated Mon May 28 15:49:23 2007
;--------------------------------------------------------
	.module hello
	.optsdcc -mmcs51 --model-small
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl _main
	.globl _delay
	.globl _uart_init
	.globl _TF1
	.globl _TR1
	.globl _TF0
	.globl _TR0
	.globl _IE1
	.globl _IT1
	.globl _IE0
	.globl _IT0
	.globl _SM0
	.globl _SM1
	.globl _SM2
	.globl _REN
	.globl _TB8
	.globl _RB8
	.globl _TI
	.globl _RI
	.globl _CY
	.globl _AC
	.globl _F0
	.globl _RS1
	.globl _RS0
	.globl _OV
	.globl _F1
	.globl _P
	.globl _RD
	.globl _WR
	.globl _T1
	.globl _T0
	.globl _INT1
	.globl _INT0
	.globl _TXD0
	.globl _TXD
	.globl _RXD0
	.globl _RXD
	.globl _P3_7
	.globl _P3_6
	.globl _P3_5
	.globl _P3_4
	.globl _P3_3
	.globl _P3_2
	.globl _P3_1
	.globl _P3_0
	.globl _P2_7
	.globl _P2_6
	.globl _P2_5
	.globl _P2_4
	.globl _P2_3
	.globl _P2_2
	.globl _P2_1
	.globl _P2_0
	.globl _P1_7
	.globl _P1_6
	.globl _P1_5
	.globl _P1_4
	.globl _P1_3
	.globl _P1_2
	.globl _P1_1
	.globl _P1_0
	.globl _P0_7
	.globl _P0_6
	.globl _P0_5
	.globl _P0_4
	.globl _P0_3
	.globl _P0_2
	.globl _P0_1
	.globl _P0_0
	.globl _PS
	.globl _PT1
	.globl _PX1
	.globl _PT0
	.globl _PX0
	.globl _EA
	.globl _ES
	.globl _ET1
	.globl _EX1
	.globl _ET0
	.globl _EX0
	.globl _BREG_F7
	.globl _BREG_F6
	.globl _BREG_F5
	.globl _BREG_F4
	.globl _BREG_F3
	.globl _BREG_F2
	.globl _BREG_F1
	.globl _BREG_F0
	.globl _TMOD
	.globl _TL1
	.globl _TL0
	.globl _TH1
	.globl _TH0
	.globl _TCON
	.globl _SP
	.globl _SCON
	.globl _SBUF0
	.globl _SBUF
	.globl _PSW
	.globl _PCON
	.globl _P3
	.globl _P2
	.globl _P1
	.globl _P0
	.globl _IP
	.globl _IE
	.globl _DP0L
	.globl _DPL
	.globl _DP0H
	.globl _DPH
	.globl _B
	.globl _ACC
	.globl _putchar
;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
	.area RSEG    (DATA)
_ACC	=	0x00e0
_B	=	0x00f0
_DPH	=	0x0083
_DP0H	=	0x0083
_DPL	=	0x0082
_DP0L	=	0x0082
_IE	=	0x00a8
_IP	=	0x00b8
_P0	=	0x0080
_P1	=	0x0090
_P2	=	0x00a0
_P3	=	0x00b0
_PCON	=	0x0087
_PSW	=	0x00d0
_SBUF	=	0x0099
_SBUF0	=	0x0099
_SCON	=	0x0098
_SP	=	0x0081
_TCON	=	0x0088
_TH0	=	0x008c
_TH1	=	0x008d
_TL0	=	0x008a
_TL1	=	0x008b
_TMOD	=	0x0089
;--------------------------------------------------------
; special function bits
;--------------------------------------------------------
	.area RSEG    (DATA)
_BREG_F0	=	0x00f0
_BREG_F1	=	0x00f1
_BREG_F2	=	0x00f2
_BREG_F3	=	0x00f3
_BREG_F4	=	0x00f4
_BREG_F5	=	0x00f5
_BREG_F6	=	0x00f6
_BREG_F7	=	0x00f7
_EX0	=	0x00a8
_ET0	=	0x00a9
_EX1	=	0x00aa
_ET1	=	0x00ab
_ES	=	0x00ac
_EA	=	0x00af
_PX0	=	0x00b8
_PT0	=	0x00b9
_PX1	=	0x00ba
_PT1	=	0x00bb
_PS	=	0x00bc
_P0_0	=	0x0080
_P0_1	=	0x0081
_P0_2	=	0x0082
_P0_3	=	0x0083
_P0_4	=	0x0084
_P0_5	=	0x0085
_P0_6	=	0x0086
_P0_7	=	0x0087
_P1_0	=	0x0090
_P1_1	=	0x0091
_P1_2	=	0x0092
_P1_3	=	0x0093
_P1_4	=	0x0094
_P1_5	=	0x0095
_P1_6	=	0x0096
_P1_7	=	0x0097
_P2_0	=	0x00a0
_P2_1	=	0x00a1
_P2_2	=	0x00a2
_P2_3	=	0x00a3
_P2_4	=	0x00a4
_P2_5	=	0x00a5
_P2_6	=	0x00a6
_P2_7	=	0x00a7
_P3_0	=	0x00b0
_P3_1	=	0x00b1
_P3_2	=	0x00b2
_P3_3	=	0x00b3
_P3_4	=	0x00b4
_P3_5	=	0x00b5
_P3_6	=	0x00b6
_P3_7	=	0x00b7
_RXD	=	0x00b0
_RXD0	=	0x00b0
_TXD	=	0x00b1
_TXD0	=	0x00b1
_INT0	=	0x00b2
_INT1	=	0x00b3
_T0	=	0x00b4
_T1	=	0x00b5
_WR	=	0x00b6
_RD	=	0x00b7
_P	=	0x00d0
_F1	=	0x00d1
_OV	=	0x00d2
_RS0	=	0x00d3
_RS1	=	0x00d4
_F0	=	0x00d5
_AC	=	0x00d6
_CY	=	0x00d7
_RI	=	0x0098
_TI	=	0x0099
_RB8	=	0x009a
_TB8	=	0x009b
_REN	=	0x009c
_SM2	=	0x009d
_SM1	=	0x009e
_SM0	=	0x009f
_IT0	=	0x0088
_IE0	=	0x0089
_IT1	=	0x008a
_IE1	=	0x008b
_TR0	=	0x008c
_TF0	=	0x008d
_TR1	=	0x008e
_TF1	=	0x008f
;--------------------------------------------------------
; overlayable register banks
;--------------------------------------------------------
	.area REG_BANK_0	(REL,OVR,DATA)
	.ds 8
;--------------------------------------------------------
; internal ram data
;--------------------------------------------------------
	.area DSEG    (DATA)
;--------------------------------------------------------
; overlayable items in internal ram 
;--------------------------------------------------------
	.area	OSEG    (OVR,DATA)
	.area	OSEG    (OVR,DATA)
;--------------------------------------------------------
; Stack segment in internal ram 
;--------------------------------------------------------
	.area	SSEG	(DATA)
__start__stack:
	.ds	1

;--------------------------------------------------------
; indirectly addressable internal ram data
;--------------------------------------------------------
	.area ISEG    (DATA)
;--------------------------------------------------------
; bit data
;--------------------------------------------------------
	.area BSEG    (BIT)
;--------------------------------------------------------
; paged external ram data
;--------------------------------------------------------
	.area PSEG    (PAG,XDATA)
;--------------------------------------------------------
; external ram data
;--------------------------------------------------------
	.area XSEG    (XDATA)
;--------------------------------------------------------
; external initialized ram data
;--------------------------------------------------------
	.area XISEG   (XDATA)
	.area HOME    (CODE)
	.area GSINIT0 (CODE)
	.area GSINIT1 (CODE)
	.area GSINIT2 (CODE)
	.area GSINIT3 (CODE)
	.area GSINIT4 (CODE)
	.area GSINIT5 (CODE)
	.area GSINIT  (CODE)
	.area GSFINAL (CODE)
	.area CSEG    (CODE)
;--------------------------------------------------------
; interrupt vector 
;--------------------------------------------------------
	.area HOME    (CODE)
__interrupt_vect:
	ljmp	__sdcc_gsinit_startup
;--------------------------------------------------------
; global & static initialisations
;--------------------------------------------------------
	.area HOME    (CODE)
	.area GSINIT  (CODE)
	.area GSFINAL (CODE)
	.area GSINIT  (CODE)
	.globl __sdcc_gsinit_startup
	.globl __sdcc_program_startup
	.globl __start__stack
	.globl __mcs51_genXINIT
	.globl __mcs51_genXRAMCLEAR
	.globl __mcs51_genRAMCLEAR
	.area GSFINAL (CODE)
	ljmp	__sdcc_program_startup
;--------------------------------------------------------
; Home
;--------------------------------------------------------
	.area HOME    (CODE)
	.area CSEG    (CODE)
__sdcc_program_startup:
	lcall	_main
;	return from main will lock up
	sjmp .
;--------------------------------------------------------
; code
;--------------------------------------------------------
	.area CSEG    (CODE)
;------------------------------------------------------------
;Allocation info for local variables in function 'uart_init'
;------------------------------------------------------------
;------------------------------------------------------------
;	hello.c:5: void uart_init(void)
;	-----------------------------------------
;	 function uart_init
;	-----------------------------------------
_uart_init:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	hello.c:7: SCON = 0x50;
;	genAssign
	mov	_SCON,#0x50
;	hello.c:8: HIGH_NIBBLE_SET(TMOD, 2);
;	genAnd
	mov	a,#0x0F
	anl	a,_TMOD
;	genOr
	orl	a,#0x20
	mov	_TMOD,a
;	hello.c:9: TH1 = 253;
;	genAssign
	mov	_TH1,#0xFD
;	hello.c:10: PCON |= 0x80;
;	genOr
	orl	_PCON,#0x80
;	hello.c:11: ES = 0;
;	genAssign
	clr	_ES
;	hello.c:12: TR1 = 1;
;	genAssign
	setb	_TR1
;	Peephole 300	removed redundant label 00101$
	ret
;------------------------------------------------------------
;Allocation info for local variables in function 'putchar'
;------------------------------------------------------------
;c                         Allocated to registers r2 
;------------------------------------------------------------
;	hello.c:15: void putchar(char c)
;	-----------------------------------------
;	 function putchar
;	-----------------------------------------
_putchar:
;	genReceive
	mov	r2,dpl
;	hello.c:17: TI = 0;
;	genAssign
	clr	_TI
;	hello.c:18: SBUF = c;
;	genAssign
	mov	_SBUF,r2
;	hello.c:19: while(!TI)
00101$:
;	genIfx
;	genIfxJump
;	Peephole 108.d	removed ljmp by inverse jump logic
	jnb	_TI,00101$
;	Peephole 300	removed redundant label 00107$
;	Peephole 300	removed redundant label 00104$
	ret
;------------------------------------------------------------
;Allocation info for local variables in function 'delay'
;------------------------------------------------------------
;i                         Allocated to registers r2 r3 
;------------------------------------------------------------
;	hello.c:23: void delay(void)
;	-----------------------------------------
;	 function delay
;	-----------------------------------------
_delay:
;	hello.c:26: for(i=0;i<30000;i++)
;	genAssign
	mov	r2,#0x30
	mov	r3,#0x75
00103$:
;	genMinus
;	genMinusDec
	dec	r2
	cjne	r2,#0xff,00109$
	dec	r3
00109$:
;	genIfx
	mov	a,r2
	orl	a,r3
;	genIfxJump
;	Peephole 108.b	removed ljmp by inverse jump logic
	jnz	00103$
;	Peephole 300	removed redundant label 00110$
;	Peephole 300	removed redundant label 00104$
	ret
;------------------------------------------------------------
;Allocation info for local variables in function 'main'
;------------------------------------------------------------
;------------------------------------------------------------
;	hello.c:30: void main()
;	-----------------------------------------
;	 function main
;	-----------------------------------------
_main:
;	hello.c:32: IE = 0;
;	genAssign
	mov	_IE,#0x00
;	hello.c:33: P0 = P1 = 0xff;
;	genAssign
	mov	_P1,#0xFF
;	genAssign
	mov	_P0,#0xFF
;	hello.c:34: uart_init();
;	genCall
	lcall	_uart_init
;	hello.c:35: while(1) {
00102$:
;	hello.c:36: printf("hello world p2 = %d p3 = %d\r\n",P2,P3);
;	genCast
	mov	r2,_P3
	mov	r3,#0x00
;	genCast
	mov	r4,_P2
	mov	r5,#0x00
;	genIpush
	push	ar2
	push	ar3
;	genIpush
	push	ar4
	push	ar5
;	genIpush
	mov	a,#__str_0
	push	acc
	mov	a,#(__str_0 >> 8)
	push	acc
	mov	a,#0x80
	push	acc
;	genCall
	lcall	_printf
	mov	a,sp
	add	a,#0xf9
	mov	sp,a
;	hello.c:37: P1 = P2;
;	genAssign
	mov	_P1,_P2
;	hello.c:38: P1_0 ^= 1;
;	genXor
	cpl	_P1_0
;	hello.c:39: P0_0 ^= 1;
;	genXor
	cpl	_P0_0
;	hello.c:40: delay();
;	genCall
	lcall	_delay
;	Peephole 112.b	changed ljmp to sjmp
	sjmp	00102$
;	Peephole 259.a	removed redundant label 00104$ and ret
;
	.area CSEG    (CODE)
	.area CONST   (CODE)
__str_0:
	.ascii "hello world p2 = %d p3 = %d"
	.db 0x0D
	.db 0x0A
	.db 0x00
	.area XINIT   (CODE)