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Mne-
Instruction
monic
Branch
BR
!addr
$addr1
(+16) to (+2)
(–1) to (–15) 1 1 1 1 S
PCDE
PCXA
BCDE
BCXA
BRA
!addr1
BRCB
!caddr
Sub-
CALL
!addr
routine
CALLA
!addr1
stack
CALLF
!faddr
control
RET
RETS
RETI
PUSH
rp
BS
POP
rp
BS
I/O
IN
A,PORTn
XA,PORTn
OUT
PORTn,A
PORTn,XA
Interrupt
EI
control
IExxx
DI
IExxx
CPU
HALT
control
STOP
NOP
Special
SEL
RBn
MBn
GETI
taddr
Operand
1 0 1 0 1 0 1 1
0 0 0 0 A
1 0 0 1 1 0 0 1
1 0 0 1 1 0 0 1
0 0 0 0 0 1 0 1
1 0 0 1 1 0 0 1
1 0 1 1 1 0 1 0
0 1 0 1
1 0 1 0 1 0 1 1
1 0 1 1 1 0 1 1
0 1 0 0 0
1 1 1 0 1 1 1 0
1 1 1 0 0 0 0 0
1 1 1 0 1 1 1 1
0 1 0 0 1 P
1 0 0 1 1 0 0 1
0 1 0 0 1 P
1 0 0 1 1 0 0 1
1 0 1 0 0 0 1 1
1 0 1 0 0 0 1 0
1 0 0 1 0 0 1 1
1 0 0 1 0 0 1 0
1 0 0 1 1 1 0 1
1 0 0 1 1 1 0 1
1 0 0 1 1 1 0 0
1 0 0 1 1 1 0 0
1 0 0 1 1 1 0 1
1 0 0 1 1 1 0 1
0 1 1 0 0 0 0 0
1 0 0 1 1 0 0 1
1 0 0 1 1 0 0 1
0 0 T
5
Instruction code
B
1
0 0
A
A
A
3
2
1
0
S
S
S
3
2
1
0
0 0 0 0 0 1 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1
0
caddr
0 1
0
faddr
P
1
2
1
0 0 0 0 0 1 1 1
P
0
2
1
0 0 0 0 0 1 1 0
1 1 1 1 N
1 1 1 1 N
1 1 1 1 N
1 1 1 1 N
1 0 1 1 0 0 1 0
1 0 N
1 0 1 1 0 0 1 0
1 0 N
1 0 1 0 0 0 1 1
1 0 1 1 0 0 1 1
0 0 1 0 0 0 N
0 0 0 1 N
T
T
T
T
T
4
3
2
1
0
CHAPTER 11 INSTRUCTION SET
B
2
addr
addr1
addr
addr1
N
N
N
3
2
1
0
N
N
N
3
2
1
0
N
N
N
3
2
1
0
N
N
N
3
2
1
0
1 1 N
N
N
5
2
1
0
1 1 N
N
N
5
2
1
0
N
1
0
N
N
N
3
2
1
0
B
3
263
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