1
GATE ECE 1991
Subjective
+5
-0
The program given below is run on an 8085 based microcomputer system. Determine the contents of the registers: PC, SP, B,
C, H, L after a half instruction is executed.
LOC
2000 START: LXI SP, 1000H
LXI H, 2F37 H
XRA A
MOV A, H
INX H
PUSH H
CZ 20 FF H JMP 3000 H
HLT
20FF ADD H
RZ
POP B
PUSH B
RNZ
HLT
LOC
2000 START: LXI SP, 1000H
LXI H, 2F37 H
XRA A
MOV A, H
INX H
PUSH H
CZ 20 FF H JMP 3000 H
HLT
20FF ADD H
RZ
POP B
PUSH B
RNZ
HLT
Questions Asked from Marks 5
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics