?? io_8255.lst
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ASEM-51 V1.2 Copyright (c) 1996 by W.W. Heinz PAGE 1
MCS-51 Family Cross Assembler A S E M - 5 1 V 1.2
=====================================================
Source File: IO_8255.ASM
Object File: IO_8255.HEX
List File: IO_8255.LST
Line I Addr Code Source
1: N 0100 ORG 0100H
2: 0100 74 80 MOV A,#80H
3: 0102 90 7F FF MOV DPTR,#7FFFH
4: 0105 F0 MOVX @DPTR,A
5: 0106 74 7F MOV A,#07FH
6: 0108 90 7C FF MOV DPTR,#7CFFH
7: 010B F0 LOOP:MOVX @DPTR,A
8: 010C 23 RL A
9: 010D 31 11 ACALL DELAY
10: 010F 21 0B AJMP LOOP
11: 0111 79 FF DELAY:MOV R1,#0FFH
12: 0113 7A FF L1:MOV R2,#0FFH
13: 0115 DA FE L2:DJNZ R2,L2
14: 0117 D9 FA DJNZ R1,L1
15: 0119 22 RET
16: END
register banks used: ---
no errors
ASEM-51 V1.2 Copyright (c) 1996 by W.W. Heinz PAGE 2
L I S T O F S Y M B O L S
=============================
SYMBOL TYPE VALUE LINE
------------------------------------------------------------
AC BIT D6
ACC DATA E0
B DATA F0
CY BIT D7
DELAY CODE 0111 11
DPH DATA 83
DPL DATA 82
EA BIT AF
ES BIT AC
ET0 BIT A9
ET1 BIT AB
EX0 BIT A8
EX1 BIT AA
EXTI0 CODE 0003
EXTI1 CODE 0013
F0 BIT D5
IE DATA A8
IE0 BIT 89
IE1 BIT 8B
INT0 BIT B2
INT1 BIT B3
IP DATA B8
IT0 BIT 88
IT1 BIT 8A
L1 CODE 0113 12
L2 CODE 0115 13
LOOP CODE 010B 7
OV BIT D2
P BIT D0
P0 DATA 80
P1 DATA 90
P2 DATA A0
P3 DATA B0
PCON DATA 87
PS BIT BC
PSW DATA D0
PT0 BIT B9
PT1 BIT BB
PX0 BIT B8
PX1 BIT BA
RB8 BIT 9A
RD BIT B7
REN BIT 9C
RESET CODE 0000
RI BIT 98
RS0 BIT D3
RS1 BIT D4
RXD BIT B0
SBUF DATA 99
SCON DATA 98
ASEM-51 V1.2 Copyright (c) 1996 by W.W. Heinz PAGE 3
SYMBOL TYPE VALUE LINE
------------------------------------------------------------
SINT CODE 0023
SM0 BIT 9F
SM1 BIT 9E
SM2 BIT 9D
SP DATA 81
T0 BIT B4
T1 BIT B5
TB8 BIT 9B
TCON DATA 88
TF0 BIT 8D
TF1 BIT 8F
TH0 DATA 8C
TH1 DATA 8D
TI BIT 99
TIMER0 CODE 000B
TIMER1 CODE 001B
TL0 DATA 8A
TL1 DATA 8B
TMOD DATA 89
TR0 BIT 8C
TR1 BIT 8E
TXD BIT B1
WR BIT B6
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