Mon Oct  2 14:59:51 PDT 1989
	Add CA support (new opcodes, sfr operands).
	Add architecture switches (-aKA, -aKB, -aMC, -aCA).

Mon Oct 16 14:15:09 PDT 1989
	"sfr0"-"sfr31" should have been named "sf0"-"sf31"

Thu Nov 30 13:21:18 PST 1989
	Correct for misdocumentation in CA manual:
		- opcode for sysctl is 0x638
		- COBR instructions have an S2 bit, not an S1 bit

	Accept the escape '\v' (vertical tab) in .ascii and .asciz strings.
