Intel 80C196NU, 8XC196NP, Microcontroller manual Kbyte mode, Mbyte mode

8XC196NP, 80C196NU USER’S MANUAL

Table A-6. Instruction Set (Continued)

Mnemonic Operation Instruction Format

LDB	LOAD BYTE. Loads the value of the source
	byte operand into the destination operand.
	(DEST) ← (SRC)

	DEST, SRC
LDB	breg, baop

(101100aa) (baop) (breg)

PSW Flag Settings

Z		N		C	V	VT	ST
—	—		—	—	—	—

LDBSE	LOAD BYTE SIGN-EXTENDED. Sign-
	extends the value of the source short-
	integer operand and loads it into the
	destination integer operand.
	(low byte DEST) ← (SRC)
	if DEST.15 = 1 then
	(high word DEST) ← 0FFH
	else
	(high word DEST) ← 0
	end_if

DEST, SRC

LDBSE wreg, baop

(101111aa) (baop) (wreg)

PSW Flag Settings

Z		N		C	V	VT	ST
—	—		—	—	—	—

LDBZE	LOAD BYTE ZERO-EXTENDED. Zero-
	extends the value of the source byte operand
	and loads it into the destination word
	operand.
	(low byte DEST) ← (SRC)
	(high byte DEST) ← 0

DEST, SRC

LDBZE wreg, baop

(101011aa) (baop) (wreg)

PSW Flag Settings

Z		N		C	V	VT	ST
—	—		—	—	—	—

LJMP	LONG JUMP. Adds to the program counter
	the offset between the end of this instruction
	and the target label, effecting the jump. The
	offset must be in the range of –32,768 to
	+32,767.
	64-Kbyte mode:
	PC ← PC + 16-bit disp
	1-Mbyte mode:
	PC ← PC + 24-bit disp
		PSW Flag Settings
		Z N C V VT ST

LJMP cadd

(11100111) (disp-low) (disp-high)

NOTE: The displacement (disp) is sign- extended to 24 bits in the 1-Mbyte addressing mode. This displace- ment may cause the program counter to cross a page boundary.

— — — — — ?

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