MICROPROCESSOR QUIZ

 H and L

 B and C

 W and Z

 D and E

 Accumulator, arithmetic and logic circuits

 Accumulator, arithmetic, logic circuits and five flags

 Accumulator, temporary register, arithmetic and logic circuits

 Accumulator, temporary register, arithmetic, logic circuits and five flags

Mux

RS Latch

Decoder

Nand

 PC specifies the address of the instruction to be executed

 PC specifies the number of instructions executed so far

 PC specifies the address of the instruction being executed

 Program Counter (PC) specifies the address of the instruction last executed

 PSW

 D-E

 Stack Pointer

 B-C

 285

 256

 512

 65536

 without any operation, the calling program would resume from instruction immediately following the call instruction.

 without any operation, the calling program would resume from instruction immediately following the call instruction and also the PC will be incremented after the execution of the instruction.

 the top of the stack will be popped out and assigned to the PC.

 the PC will be incremented after the execution of the instruction.

8

2

4

6

 AND that bit with “1” and remaining bits with “0”.

 OR that bit with “0” and remaining bits with “1”.

 AND that bit with “0” and remaining bits with “1”.

 OR that bit with “1” and remaining bits with “0”.

 8085 has multiplexed bus, whereas 6800 does not have

 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O

 None

 8085 has 5 interrupts lines, whereas 6800 has only two