8085 Microprocessor Programming Practice Questions

Which one of the following 8085 microprocessor programs correctly calculates the product of two 8-bit numbers stored in registers B and C?

An 8085 microprocessor executes "STA 1234H" with starting address location 1FFEH (STA copies the contents of the Accumulator to the 16-bit address location). While the instruction is fetched and executed, the sequence of values written at the address pins $A_{15}-A_{8}$ is

For 8085 microprocessor, the following program is executed. MVI A, 05H; MVI B, 05H; PTR: ADD B; DCR B; JNZ PTR; ADI 03H; HLT; At the end of program, accumulator contains

An 8085 assembly language program is given below. Line 1: MVI A, B5H 2: MVI B, 0EH 3: XRI 69H 4: ADD B 5: ANI 9BH 6: CPI 9FH 7: STA 3010H 8: HLT After execution of line 7 of the program, the status of the CY and Z flags will be

Following is the segment of a 8085 assembly language program LXI SP, EFFF H CALL 3000 H : : : 3000 H : LXI H, 3CF4 PUSH PSW SPHL POP PSW RET On completion of RET execution, the contents of SP is

Consider the following assembly language program. MVI B,87H MOV A,B START: JMP NEXT MVI B,00H XRA B OUT PORT1 HLT NEXT: XRA B JP START OUT PORT2 HLT The execution of the above program in an 8085 microprocessor will result in