Renesas rl78 User Manual
RL78/G1A
CHAPTER 28 INSTRUCTION SET
R01UH0305EJ0200 Rev.2.00
831
Jul 04, 2013
28.1.2 Description of operation column
The operation when the instruction is executed is shown in the “Operation” column using the following symbols.
Table 28-2. Symbols in “Operation” Column
Symbol Function
A
A register; 8-bit accumulator
X X
register
B B
register
C C
register
D D
register
E E
register
H H
register
L L
register
ES ES
register
CS CS
register
AX
AX register pair; 16-bit accumulator
BC
BC register pair
DE
DE register pair
HL
HL register pair
PC Program
counter
SP Stack
pointer
PSW
Program status word
CY Carry
flag
AC
Auxiliary carry flag
Z Zero
flag
RBS
Register bank select flag
IE
Interrupt request enable flag
()
Memory contents indicated by address or register contents in parentheses
X
H
, X
L
X
S
, X
H
, X
L
16-bit registers: X
H
= higher 8 bits, X
L
= lower 8 bits
20-bit registers: X
S
= (bits 19 to 16), X
H
= (bits 15 to 8), X
L
= (bits 7 to 0)
∧
Logical product (AND)
∨
Logical sum (OR)
∨
Exclusive logical sum (exclusive OR)
−
Inverted data
addr5
16-bit immediate data (even addresses only in 0080H to 00BFH)
addr16
16-bit immediate data
addr20
20-bit immediate data
jdisp8
Signed 8-bit data (displacement value)
jdisp16
Signed 16-bit data (displacement value)