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vasm is a portable and retargetable assembler able to create linkable objects in different formats as well as absolute code. Different CPU-, syntax and output-modules are supported.

Many common directives/pseudo-opcodes are supported (depending on the syntax module) as well as CPU-specific extensions.

The assembler supports optimizations and relaxations (e.g. choosing the shortest possible branch instruction or addressing mode as well as converting a branch to an absolute jump if necessary).

The following architectures are currently supported by vasm:
  • M680x0 family (including M6888x, M68851 and CPU32)
  • ColdFire family (all models of V2, V3, V4, V4e)
  • PowerPC family (POWER, 40x, 440, 460, 6xx, 7xx, 7xxx, 860, Book-E, e300 and e500)
  • Z80 family (Z80, 8080, GBZ80, 64180, RCM2/3/4k)
  • 6502 family
  • Jaguar RISC (GPU and DSP instruction sets)
  • ARM (architecture ARMv1 to ARMv4, including THUMB mode)
  • 80x86 family (IA32 8/16/32 bit, using MIT-syntax)
  • C16x/ST10
  • 6800 family (6800, 6801, 6803, 68HC11)
  • QNICE (elegant 16-bit FPGA CPU)
  • TR3200 (virtual CPU from 0x10c)
  • Raspberry-Pi VideoCore IV
Supported linkable object formats include:
  • ELF (M68k, PowerPC, i386, ARM and JRISC)
  • a.out (M68k, i386 and JRISC)
  • Amiga hunk format (M68k)
  • Atari TOS executable format (M68k)
  • Sharp X68000 Xfile format (M68k)
  • EHF extended hunk format (PowerPC)
  • Raw, binary output (all)
  • Motorola Srecord format (all)
  • VOBJ proprietary versatile object format (all)
  • Test, debugging output (all, default)

vasm docs (pdf)

Download multi-target Windows (x64) binaries of vbcc/vasm/vlink (19/03/2021).

Download statically-linked multi-target Linux (x64) binaries of vbcc/vasm/vlink (19/03/2021).

Download statically-linked multi-target Linux (arm, e.g. RaspberryPi) binaries of vbcc/vasm/vlink (19/03/2021).

Frank Wille's vasm pages with daily source snapshots

Binaries of vasm for 6502 for x86-64 (Mac, Windows and Linux) (Thanks to Ben Eater for providing the Mac and Windows versions.)

A 6502 port of the vbcc C compiler is now also available (see the 6502 related download/link area).