Download - 第 4章 汇编语言程序设计
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4
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4.1
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.ASM .OBJ .EXE
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SEGMENT ENDS
SEGMENT ENDS
SEGMENT ENDS
SEGMENT ENDS
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CPUCPU
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[] [] [][] [ ]
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[] [] [ ]
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,31,,(,,)
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CPU
,
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AABCDASCII41H42H43H44H
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+-*/MOD ANDORNOTXORMOV AL8 AND 4 MOV AL8+4-1
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0FFFFHEQNELTGTLEGE
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OFFSET SEG TYPE LENGTH SIZE
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MOV AXSEG DATA MOV DSAX MOV BXOFFSET DATA LEA BXDATA
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BUFFER BUFFER DW 200 DUP(0) TYPE BUFFER 2 LENGTH BUFFER200 SIZE BUFFER400
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PTR MOV BYTR PTR[BX]12H
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[ ]
[ ]
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4.2
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DB DW DD 4DQ 48DT 10
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DATA1 DB 11H22H33H44HDATA2 DW 11H22H3344HDATA3 DD 11H*222H33445566H
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DB DATA1 DB ABCD66HABCD41H42H43H44H66H
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[] n DUP BW 20 DUP0 DB 3 DUP22H11H
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MEM1 DB 34HA DW 20 DUP40
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EQU CONSTANTEQU100 VAR EQU 30H+99HEQU
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SEGMENT [] [] []
ENDS
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PARA 16 1BYTE WORDPAGE 256 1
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NONE PUBLIC LINKCOMMON STACK AT MEMORY
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DATA SEGMENT PUBLIC CODEMEM1 DB 11H22HDATA ENDS
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ASSUME []
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END []
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DSEG SEGMENTDATA1 DB 12DATA2 DW 1234HDSEG ENDSESEG SEGMENT DB 20 DUPESEG ENDSSSEG SEGMENT STACK STACK DB 200 DUPSSEG ENDS
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CSEG SEGMENT ASSUME CSCSEGDSDSEG ESESEGSSSSEG STARTMOV AXDSEG MOV DSAX MOV AXESEG MOV ESAX MOV AXSSEG MOV SSAX CSEG ENDS END START
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PROC [ NEAR / FAR ] RET ENDPP166
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MACRO ENDMP167
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ORG ORG ORG 2000H
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NAME NAME
TITLE TITLE P169
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4.3 DOS BIOS
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DOS 21HC
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DOS
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DOS MOV AH INT 21H
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1. MOV AH01 INT 21HAL
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GET_KEY: MOVAH,1 INT21H CMPAL,Y JZ YES CMPAL,N JZ NO JNZGET_KEY YES: NO:
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2. AH OAHDSDX INT 21H
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0DHN1N2
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DAT1 DB 2020 DUP
LEA DXDAT1 MOV AH0AH INT 21H
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14H 20
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3. AH O2HDL INT 21H
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MOVAH02 MOVDL41H INT21HA
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4. AH O9HDSDX INT 21H
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$,ASCII
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DATA SEGMENTMESS1 DB Input String: 0DH0AH,$DATA ENDSCODE SEGMENT MOVAH09MOVDXOFFSET MESS1INT21H
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4.4
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D:\masm>EDIT D:\masm>MASM D:\masm>LINK D:\masm>TD