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8.15.6 VAX Operands

The immediate character is `$' for Unix compatibility, not `#' as DEC writes it.

The indirect character is `*' for Unix compatibility, not `@' as DEC writes it.

The displacement sizing character is ``' (an accent grave) for Unix compatibility, not `^' as DEC writes it. The letter preceding ``' may have either case. `G' is not understood, but all other letters (b i l s w) are understood.

Register names understood are r0 r1 r2 ... r15 ap fp sp pc. Upper and lower case letters are equivalent.

For instance

tstb *w`$4(r5)

Any expression is permitted in an operand. Operands are comma separated.