Wikipedia confirms it. https://en.wikipedia.org/wiki/X86_assembly_language#Syntax https://en.wikipedia.org/wiki/X86_assembly_language#Syntax "The AT&T syntax

Wikipedia confirms it. https://en.wikipedia.org/wiki/X86_assembly_language#Syntax https://en.wikipedia.org/wiki/X86_assembly_language#Syntax "The AT&T syntax is nearly universal to all other architectures with the same mov order; it was originally a syntax for PDP-11 assembly. The Intel syntax is specific to the x86 architecture, and is the one used in the x86 platform's documentation." https://en.wikipedia.org/wiki/As_(Unix) https://en.wikipedia.org/wiki/As_(Unix) "As of November 1971, an assembler invoked as as was available for Unix. Implemented by Bell Labs staff, it was based upon the Digital Equipment Corporation's PAL-11R assembler."