CHAPTER 21 INSTRUCTION SET
Preliminary User’s Manual U19014EJ1V0UD
474
21.1.2 Description of operation column
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
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
: Higher 8 bits and lower 8 bits of 16-bit register
∧
:
Logical product (AND)
∨
:
Logical sum (OR)
∨
:
Exclusive logical sum (exclusive OR)
: Inverted
data
addr16: 16-bit immediate data or label
jdisp8: Signed 8-bit data (displacement value)
21.1.3 Description of flag operation column
(Blank): Not affected
0:
Cleared to 0
1:
Set to 1
×
:
Set/cleared according to the result
R:
Previously saved value is restored
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