Key concepts and instructions commonly used in Intel 8086 assembly programming
Registers: The 8086 processor has several general-purpose registers, such as AX, BX, CX, and DX, which can be used for data storage and manipulation. There are also segment registers, like CS, DS, ES, and SS, which hold segment addresses for memory access.
Addressing Modes: The 8086 supports different addressing modes to access data and operands, including immediate, register, memory, and indirect addressing modes.
Instructions: The 8086 processor supports a wide range of instructions, including arithmetic, logical, control flow, string manipulation, and I/O instructions. These instructions are represented by mnemonic codes, such as MOV, ADD, SUB, JMP, CMP, and more.
Interrupts: The 8086 processor has interrupt handling capabilities, allowing external devices or software to interrupt the normal execution of a program. Interrupt Service Routines (ISRs) can be written to handle specific interrupts and perform designated tasks.
Directives: Assembly language also includes directives that provide instructions to the assembler for tasks such as defining variables, allocating memory, and specifying code segments.
Assemblers: To write and assemble Intel 8086 assembly code, you'll need an assembler like NASM (Netwide Assembler) or TASM (Turbo Assembler). These assemblers convert the assembly code into machine code that can be executed by the processor.
It's important to consult the documentation and resources specific to the assembler and 8086 architecture you're using to ensure accurate syntax and instruction set information. Additionally, studying sample code and tutorials can help deepen your understanding of Intel 8086 assembly programming.