Intel 8XC196NP, 80C196NU, Microcontroller manual Tijmp TBASE, INDEX, #MASK

8XC196NP, 80C196NU USER’S MANUAL

Table A-6. Instruction Set (Continued)

Mnemonic	Operation		Instruction Format
TIJMP	TABLE INDIRECT JUMP. Causes execution
	to continue at an address selected from a	TIJMP	TBASE, [INDEX], #MASK
	table of addresses.
		(11100010) [INDEX] (#MASK) (TBASE)
	The first word register, TBASE, contains the
	16-bit address of the beginning of the jump	NOTE:
	table. TBASE can be located in RAM up to		TIJMP multiplies OFFSET by two
	FEH without windowing or above FFH with		to provide for word alignment of
	windowing. The jump table itself can be		the jump table.
	placed at any nonreserved memory location
	on a word boundary in page FFH.
	The second word register, INDEX, contains
	the 16-bit address that points to a register
	containing a 7-bit value. This value is used to
	calculate the offset into the jump table. Like
	TBASE, INDEX can be located in RAM up to
	FEH without windowing or above FFH with
	windowing. Note that the 16-bit address
	contained in INDEX is absolute; it disregards
	any windowing that may be in effect when the
	TIJMP instruction is executed.
	The byte operand, #MASK, is 7-bit immediate
	data to mask INDEX. #MASK is ANDed with
	INDEX to determine the offset (OFFSET).
	OFFSET is multiplied by two, then added to
	the base address (TBASE) to determine the
	destination address (DEST X) in page FFH.
	[INDEX] AND #MASK = OFFSET
	(2 × OFFSET) + TBASE = DEST X
	PC ← (DEST X)

PSW Flag Settings

Z		N		C	V	VT	ST
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