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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.