91. After complete execution of the program in IC 8085 Microprocessor, PC contains . . . . . . . . and SP contains . . . . . . . .
Memory address in hex
Instruction
2000
LXI SP, 1000
2003
PUSH H
2004
PUSH D
2005
CALL 2050
2008
POP H
2009
HLT
| Memory address in hex | Instruction |
| 2000 | LXI SP, 1000 |
| 2003 | PUSH H |
| 2004 | PUSH D |
| 2005 | CALL 2050 |
| 2008 | POP H |
| 2009 | HLT |
92. An active low signal INTA is not needed from µP to service which of the following interrupt request?
93. If interrupt service request have been received from all of the following interrupts, then which one will be serviced last?
94. Which one of the following signal is used in DMA operation?
95. Match List-I with List-II and select the correct answer using the options given below the lists:
List-I $$\overline {{\text{BHE}}} \,\,\,{{\text{A}}_0}$$
List-II What is read/written?
a. 0 0
1. 1 bytes from/to odd address
b. 0 1
2. 1 byte from/to even address
c. 1 0
3. 1 16-bit word
d. 1 1
4. NOP
| List-I $$\overline {{\text{BHE}}} \,\,\,{{\text{A}}_0}$$ | List-II What is read/written? |
| a. 0 0 | 1. 1 bytes from/to odd address |
| b. 0 1 | 2. 1 byte from/to even address |
| c. 1 0 | 3. 1 16-bit word |
| d. 1 1 | 4. NOP |
96. SIM stands for:
97. PLA (Programmable Logic Array) uses processor returns to
98. In the circuit shown, the device connected to Y5 can have address in the range
99. What will be content of Stack Pointer if following assembly code of 8051 microcontroller is executed immediately after reset?
PUSH 00h
POP 01h
POP 02h
PUSH 00h
POP 01h
POP 02h
100. . . . . . . . . port does not have pull-up resistors in 8051.
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