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as
supports both DEC syntax and BSD syntax. The only
difference is that in DEC syntax, a #
character is used to denote
an immediate constants, while in BSD syntax the character for this
purpose is $
.
general-purpose registers are named r0
through r7
.
Mnemonic alternatives for r6
and r7
are sp
and
pc
, respectively.
Floating-point registers are named ac0
through ac3
, or
alternatively fr0
through fr3
.
Comments are started with a #
or a /
character, and extend
to the end of the line. (FIXME: clash with immediates?)
Multiple statements on the same line can be separated by the `;' character.