WebJun 23, 2024 · Tells us whether a particular operation (or a machine cycle) is in concern with the memory or an IO device. IO/ M = 1 (Microprocessor is talking to an IO device) IO/ M = 0 (Microprocessor is talking to the memory)) S1 and S0: Tells us if a read/write operation is going on or not. S1 and S0 = 00 (Halt) S1 and S0 = 01 (A write operation) WebFeb 18, 2012 · 3 Answers. jz is "jump if zero". cmp subtracts its two operands, and sets flags accordingly. (See here for reference.) If the two operands are equal, the subtraction will result in zero and the ZF flag will be set. So in your sample, the jump will be taken if al was 1, not taken otherwise. jz means jump if zero.
8085 Microprocessor MCQ Quiz Interview Questions
WebTo perform the division of two 8 bit numbers using 8085. ALGORITHM: 1) Start the program by loading HL register pair with address of memory location. 2) Move the data to a … WebApr 28, 2024 · Here are some more instructions which use this mode of addressing. ADD M ;Add contents of the memory location whose address is held by HL pair to the contents of theAccumulator INR M ;Add contents of the memory location whose address is held by HL pair is incremented by 1 CMP M ;16 bit number from HL pair is picked up. michaels plymouth mass
Instruction Cycle and Machine Cycle in 8085 Microprocessor
WebJul 14, 2009 · In TASM (x86 assembly) it can look like this: cmp BL, BH je EQUAL ; BL = BH jg GREATER ; BL > BH jmp LESS ; BL < BH. in this case it compares two 8bit numbers that we temporarily store in the higher and the lower part of the register B. Alternatively you might also consider using jbe (if BL <= BH) or jge / jae (if BL >= BH). WebApr 27, 2024 · 2. CPI 8 bit data. Instruction word size ⇒ 2 Byte. Operation ⇒ When this instruction will execute the 8-bit data will compare with the content of accumulator (A) and the status of flag affect accordingly to the result.The status of the flags will affect but the content of accumulator A will not change. Note: It is nothing but SUI R instruction and … WebApr 2, 2024 · What are Logic Instructions? Logical instructions of a microprocessor are simply the instructions that carry out basic logical operations such as OR, AND, XOR, and so on. In Intel’s 8085 … michaels polo shirts