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One use includes passing arguments to assembly functions like this: CALL function_name DB 1,2,3 ;arguments function_name: XTHL MOV A,M ;get argument INX H ;move to next argument XTHL ;now return modified return address to stack, ;also restoring HL contents as well. Other use is to have
8 May 2015 ADDRESSING MODES & DATA TRANSFER INSTRUCTION OF 8085 MICROPROCESSOR Presented by : Vaibhavi K. Patel (140133103025) : Roshni Data Transfer Instructions Op-code operand Description Exchange H-L with top of stack XTHL None The contents of L register are exchanged with the

This page covers 8085 instruction set.The 8085 instructions are specified with opcode,operand,size,M-cycle,T-cycle etc.
14 May 2017 Chapter 3 instruction set-of-8085. 1. Instruction Set of 8085; 2. Instruction Set of 8085 An instruction is a binary pattern designed inside a microprocessor to perform a specific function. The entire group of instructions that a microprocessor supports is called Instruction Set. 8085 has 246 instructions.
16 Aug 2016 At T4 Execution of instruction takes place. Note: Most of the opcode fetch+execute need 4T. But there are cases where more than 4T states are required. eg.For HLT: T5 also used. For which instructions 6T states are required? CALL,; Conditional CALL,; DCX,; INX,; PCHL,; SPHL,; PUSH,; Conditional RET.
Microprocessor 8085 Data-transfer Instructions - Learn Microprocessor in simple and easy steps starting from basic to advanced concepts with examples including The contents of the H register provide the high-order address and the contents of the L register provide the low-order address. Example ? SPHL. XTHL. None.
XTHL: - This instruction exchanges H and L with top of stack. The contents of the L register are exchanged with the stack location pointed out by the contents of the stack pointer register. The contents of the H register are exchanged with the next stack location (SP+1); however, the contents of the stack pointer register are not
8086 microprocessor. addressing mode in 8085 microprocessor. interrupts in 8085. memory interfacing with 8085. flag register in 8085 microprocessor. 8086 flag register. 8085 addressing mode. 8085 bus structure. 8086 addressing mode. 8086 interrupts. interrupts in 8086. address bus and data bus. mov instruction. xchg

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February 2018