INC	HL	Make H'L' point to the next
				literal.
336C	SCAN-ENT	PUSH	HL	This pointer is saved briefly on
				the machine stack. SCAN-ENT
				is used by the SINGLE CAL-
				CULATION subroutine to find
				the subroutine that is required.
		AND	A	Test the A register.
		JP	P,3380,FIRST-3D	Separate the simple literals from
				the multi-purpose literals. Jump
				with literals 00 - 3D.
		LD	D,A	Save the literal in D.
		AND	+60	Continue only with bits 5 & 6.
		RRCA		Four right shifts make them
		RRCA		now bits 1 & 2.
		RRCA
		RRCA
		ADD	A,+7C	The offsets required are 3E-41.
		LD	L,A	and L will now hold double the
				required offset.
		LD	A,D	Now produce the parameter by
		AND	+1F	taking bits 0,1,2,3 & 4 of the
				literal; keep the parameter in A.
		JR	338E,ENT-TABLE	Jump forward to find the
				address of the required sub-
				routine.
3380	FIRST-3D	CP	+18	Jump forward if performing a
		JR	NC,338C,DOUBLE-A	unary operation.
		EXX		All of the subroutines that per-
		LD	BC,+FFFB	form binary operations require
		LD	D,H	that HL points to the first operand
		LD	E,L	and DE points to the second
		ADD	HL,BC	operand (the 'last value') as they
		EXX		appear on the calculator stack.
338C	DOUBLE-A	RLCA		As each entry in the table of
		LD	L,A	addresses takes up two bytes the
				offset produced is doubled.
338E	ENT-TABLE	LD	DE,+32D7	The base address of the table.
		LD	H,+00	The address of the required
		ADD	HL,DE	table entry is formed in HL; and
		LD	E,(HL)	the required subroutine address
		INC	HL	is loaded into the DE register
		LD	D,(HL)	pair.
		LD	HL,+3365	The RE-ENTRY address of 3365
		EX	(SP),HL	is put on the machine stack
		PUSH	DE	underneath the subroutine
				address.
		EXX		Return to the main set of 
				registers.
		LD	BC,(STKEND-hi)	The current value of BREG is
				transferred to the B register
				thereby returning the single
				operation offset.
				(See COMPARISON at 353B)
33A1	delete	RET		An indirect jump to the
				required subroutine.