Filter
Top Products
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
XH, XL
X
S, XH, XL
16-bit registers: X
H = higher 8 bits, XL = lower 8 bits
20-bit registers: X
S = (bits 19 to 16), XH = (bits 15 to 8), XL = (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)