2 operation field – NEC PD78214 User Manual
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PD78214 Sub-Series
saddr, saddr’ :
Memory address indicated in short direct addressing mode;
FE20H-FF1FH immediate data or label
saddrp
:
Memory address indicated in short direct addressing pair mode;
FE20H-FF1EH immediate data or label
addr16
:
16-bit address;
0000H-FEFFH immediate data or label
addr11
:
11-bit address;
800H-FFFH immediate data or label
addr5
:
5-bit address;
40H-7EH immediate data or label
word
:
16-bit data;
16-bit immediate data or label
byte
:
8-bit data;
8-bit immediate data or label
bit
:
3-bit data;
3-bit immediate data or label
n
:
Number of shift bits;
3-bit immediate data (0-7)
RBn
:
Register bank;
RB0-RB3
18.1.2 Operation Field
A
:
Register A; 8-bit accumulator
X
:
Register X
B
:
Register B
C
:
Register C
D
:
Register D
E
:
Register E
H
:
Register H
L
:
Register L
R0-R7
:
Register 0 to register 7 (absolute name)
AX
:
Register pair (AX); 16-bit accumulator
BC
:
Register pair (BC)
DE
:
Register pair (DE)
HL
:
Register pair (HL)
RP0-RP3 :
Register pair 0 to register pair 3 (absolute name)
PC
:
Program counter
SP
:
Stack pointer
PSW
:
Program status word
CY
:
Carry flag
AC
:
Auxiliary carry flag