User's Manual

258
µPD750008 USER'S MANUAL
11.3 INSTRUCTION CODES OF EACH INSTRUCTION
(1) Explanations of the symbols for the instruction codes
I
n
: Immediate data for n4 or n8
D
n
: Immediate data for mem
B
n
: Immediate data for bit
N
n
: Immediate data for n or IExxx
T
n
: Immediate data for taddr x 1/2
A
n
: Immediate data for the address (2 to 16) relative to branch destination address minus one
S
n
: Immediate data for the one’s complement of the address (15 to 1) relative to the branch destination
address
reg
R2 R1 R0 reg
000 A
001 X
010 L
011 H
100 E
101 D
110 C
111 B
reg1
rp'
P2 P1 P0 reg-pair
000 XA
0 0 1 XA'
010 HL
0 1 1 HL'
100 DE
1 0 1 DE'
110 BC
1 1 1 BC'
rp'1
Q2 Q1 Q0 addressing
0 0 1 @HL
0 1 0 @HL+
0 1 1 @HL–
1 0 0 @DE
1 0 1 @DL
@rpa
rp2
P2 P1 reg-pair
00 XA
01 HL
10 DE
11 BC
rp1
rp
N5 N2 N1
000
001
110
010
010
011
011
100
N
0
0
0
0
0
1
0
1
0
IExxx
IEBT
IEW
IET1
IET0
IECSI
IE0
IE2
IE4
1 1 1 0 IE1
@rpa1