Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Instruction type INX SP in 8085 Microprocessor
In 8085 Instruction set, INX SP instruction is used to increment the SP contents by 1. INX SP instruction is a special case of INX rp instruction which increases the content of the register pair. This instruction occupies only 1-Byte in memory.
| Mnemonics, Operand | Opcode(in HEX) | Bytes |
|---|---|---|
| INX SP | 33 | 1 |
Let us consider that the initial content of SP is 4050H. So after increment of the content of SP by using INX SP instruction, SP would have the value 4051H. Here is the required tracing table as below −
| Before | After | |
|---|---|---|
(SP) |
4050H | 4051H |
| Address | Hex Codes | Mnemonic | Comment |
|---|---|---|---|
| 2003 | 33 | INX SP | SP ←SP + 1 |
The timing diagram against this instruction INX SP execution is as follows −
Summary − So this instruction INX SP requires 1-Byte, 1-Machine Cycle (Opcode Fetch) and 6 T-States for execution as shown in the timing diagram.
Updated on: 30-Jul-2019
686 Views
Advertisements