*   Due date is now 11:59pm on Wednesday, Oct 1 rather than midnight, to avoid
    confusion about whether midnight is part of the preceding day or the following
    day.

*   Operands are separated by whitespace, not commas.

*   jmp to an undefined location should be translated to FFFF, not F000.

*   The immediate operand in the rotr instruction is unsigned, not signed.

*   Branch instructions (bneg, bz) should generate entries in the
    type/refaddress table for their label arguments. The type for such an
    entry should be "b".
    The example .syms file in the project specification should then appear
    as follows:

	main	y 0000
	loop	y 000A jmp 0012
	done	y 0014 b 000A jmp 0014
	counter	y 0016 lhi 0002 llo 0006
	dummy	y 0018
	foo	n FFFF jmp 001A