3. The main program is stored beginning at 0100H. The main program (at 0120H)has called the subroutine at 0150H, and when the microprocessor is executing theFIGURE 12.11+5 VSchematic for an Interrupt10 kDI,DI,DI.DI.DataBusTri-StateDI,BufferDIzDI,DI,INTAINTERRUPTS401instruction at location 0151 (LXI), it is interrupted. Read the program, then answerthe questions that follow:MemoryAddressMnemonicsSTART:0100LXI SP,0400H0103EI0120ÇALL 0150HSUB:0150PUSH0151LXI B,10FFH0154MOV C,A015EPOP B015FRETa. Specify the contents of stack location 03FFH after the CALL instruction.

Tri-state buffer logic devices have three states:1) Logic 1 or Low2) Logic 0 or High3) High…

instruction at location 0151 (LXI), it is interrupted. Read the program, then answer the questions that follow: Memory Address Mnemonics START: 0100 LXI SP,0400H 0103 EI 0120 ÇALL 0150H SUB: 0150 PUSH B 0151 LXI B,10FFH 0154 MOV C,A 015E POP B RET 015F a. Specify the contents of stack location 03FFH after the CALL instruction.

instruction at location 0151 (LXI), it is interrupted. Read the program, then answer the questions that follow: Memory Address Mnemonics START: 0100 LXI SP,0400H 0103 EI 0120 ÇALL 0150H SUB: 0150 PUSH B 0151 LXI B,10FFH 0154 MOV C,A 015E POP B RET 015F a. Specify the contents of stack location 03FFH after the CALL instruction.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

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3. The main program is stored beginning at 0100H. The main program (at 0120H)
has called the subroutine at 0150H, and when the microprocessor is executing the
FIGURE 12.11
+5 V
Schematic for an Interrupt
10 k
DI,
DI,
DI.
DI.
Data
Bus
Tri-State
DI,
Buffer
DIz
DI,
DI,
INTA
INTERRUPTS
401
instruction at location 0151 (LXI), it is interrupted. Read the program, then answer
the questions that follow:
Memory
Address
Mnemonics
START:
0100
LXI SP,0400H
0103
EI
0120
ÇALL 0150H
SUB:
0150
PUSH
0151
LXI B,10FFH
0154
MOV C,A
015E
POP B
015F
RET
a. Specify the contents of stack location 03FFH after the CALL instruction.

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