UPD75518 NEC, UPD75518 Datasheet - Page 156

• Manufacturer Part Number: UPD75518
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC

156
8.3 INSTRUCTION CODES OF EACH INSTRUCTION
(1) Explanations of the symbols for the instruction codes
I
D
B
N
T
A
S
n
n
n
n
n
n
n
: Immediate data for n4 or n8
: Immediate data for mem
: Immediate data for bit
: Immediate data for taddr
: Immediate data for the relative address distance (2 to 16) for the branch destination address minus
: Immediate data for the ones complement of the relative address distance (15 to 1) for the branch
: Immediate data for n or IE
one
destination address
R
Q
N
0
0
0
0
1
1
1
1
0
0
0
1
1
0
0
0
0
0
0
0
1
1
2
2
5
Q
R
N
0
1
1
0
0
0
0
1
1
0
0
1
1
0
0
0
1
1
1
1
0
1
1
1
2
Q
R
1
0
1
0
1
N
0
1
0
1
0
1
0
1
0
1
1
0
0
1
1
0
1
0
0
1
addressing
N
reg
0
0
1
0
1
0
1
0
0
A
X
H
D
L
E
C
B
0
@HL
@HL+
@HL–
@DE
@DL
IEBT
IEW
IETPG
IET0
IECSI0
IE0
IE2
IE4
IE1
IE
1/2
reg
reg1
@rpa1
@rpa
P
0
0
0
0
1
1
1
1
2
P
0
0
1
1
2
P
0
0
1
1
0
0
1
1
1
P
0
1
0
1
1
P
0
1
0
1
0
1
0
1
0
reg-pair
XA
HL
DE
BC
reg-pair
XA
XA'
HL
HL'
DE
DE'
BC
BC'
rp2
rp'
rp1
rp'1
rp
PD75518(A)