Instruction Sets

Reference documentation for the assembly languages supported by ASM Editor, including instructions, operand forms, directives, registers and input/output. You can also open this reference in the editor's Documentation panel. If you are new to assembly, start with the Assembly basics course.

M68K

The Motorola 68000, with eight data registers and eight address registers. Covers instructions, addressing modes, condition codes, directives and trap tasks for input, output and graphics.

Learn M68K

M68K docs

MIPS

MIPS assembly for the MARS simulator. Covers instructions and pseudo-instructions, directives, registers, syscalls, screen and keyboard access, and using C and C++.

Learn MIPS

MIPS docs

RISC-V

RV32 and RV64 assembly for the RARS simulator. Covers instructions, directives, registers, syscalls, screen and keyboard access, and using C and C++.

Learn RISC-V

RISC-V docs

x86-64

x86-64 assembly in NASM syntax, running as a Linux program. Covers instructions, vector extensions, directives, registers and flags, Linux syscalls, and using C and C++.

Learn x86-64

x86-64 docs

Z80

The Zilog Z80, an 8 bit CPU with 64 KB of memory. Covers instructions, flags, cycle counts, directives, registers and I/O ports for the terminal, screen, keyboard, mouse and sound.

Learn Z80

Z80 docs

Documentation for agents

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Look at https://asm-editor.specy.app/llms.txt for information on how to use ASM Editor's documentation for M68K, MIPS, RISC-V, X86 and Z80 Assembly languages.