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CHAPTER 23 INSTRUCTION SET
Preliminary User’s Manual U14581EJ3V0UM00
23.1.2 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
NMIS:
Non-maskable interrupt servicing flag
( ):
Memory contents indicated by address or register contents in parentheses
×
H
,
×
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)
23.1.3 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
Содержание mPD780852 Series
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