# Machines

Right CPU is determined by file name extension, or by [.engine directive](https://manual.asm80.com/directives). Supported file name extensions are:

* Intel 8080: .A80
* Intel 8008: .A08
* Zilog Z80: .Z80
* Motorola 6800: .A68
* Motorola 6809 / Hitachi HD6309: .A09
* MOS 6502: .A65
* WDC 65816: .816
* CDP 1802: .A18