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The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
book

The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition

by Lyla B. Das
May 2024
Intermediate to advanced content levelIntermediate to advanced
665 pages
23h 2m
English
Pearson India
Content preview from The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
PROGRAMMING CONCEPTS – IV 183
TAKE_IN: MOV TMPS[BX], AL ;transfer data to memory
INC DX ;increment port address
INC BX ;increment memory address pointer
LOOP TAKE_IN ;repeat until CX = 0
MOV AH, MAX ;copy maximum temperature to AH.
MOV DX, 0200H ;get address of rst o/p port
MOV AL, 01 ;get data for alarm, in AL
MOV CX, 20 ;CX = count
MOV BX, 0 ;BX = 0
AGAIN: CMP TMPS[BX], AH ;compare data in memory with MAX
JA ALARM ;if data>MAX, go to ALARM
OTHER: INC DX ;increment port address
INC BX ;increment address pointer
LOOP AGAIN ;repeat until CX = 0
JMP EXEET ;jump to exit point
ALARM: OUT DX, AL ;output alarm data to o/p port ...
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Publisher Resources

ISBN: 9781282663169