Skip condition
Number of
cycles
Number of
words
Instruction
code
D9
D0
Flag CY
2
16
Skip condition
Number of
cycles
Number of
words
Instruction
code
D9
D0
Flag CY
2
16
Skip condition
Number of
cycles
Number of
words
Instruction
code
D9
D0
Flag CY
2
16
Skip condition
Number of
cycles
Number of
words
Instruction
code
D9
D0
Flag CY
2
16
Rev.2.00
Jul 27, 2004
page 105 of 159
REJ03B0091-0200Z
4524 Group
SNZ0 (Skip if Non Zero condition of external 0 interrupt request flag)
0000111000
038
11
–
V10 = 0: (EXF0) = 1
Grouping:
Interrupt operation
Description: When V10 = 0 : Skips the next instruction
when external 0 interrupt request flag EXF0
is “1.” After skipping, clears (0) to the EXF0
flag. When the EXF0 flag is “0,” executes
the next instruction.
When V10 = 1 : This instruction is equiva-
lent to the NOP instruction.
Operation:
V10 = 0: (EXF0) = 1 ?
After skipping, (EXF0)
← 0
V10 = 1: SNZ0 = NOP
(V10 : bit 0 of the interrupt control register V1)
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
SEA n (Skip Equal, Accumulator with immediate data n)
0000100101
025
22
–
(A) = n
Grouping:
Comparison operation
Description: Skips the next instruction when the con-
tents of register A is equal to the value n in
the immediate field.
Executes the next instruction when the con-
tents of register A is not equal to the value n
in the immediate field.
Operation:
(A) = n ?
n = 0 to 15
2
16
000111nnnn
07n
SEAM (Skip Equal, Accumulator with Memory)
0000100110
026
11
–
(A) = (M(DP))
Grouping:
Comparison operation
Description: Skips the next instruction when the con-
tents of register A is equal to the contents of
M(DP).
Executes the next instruction when the con-
tents of register A is not equal to the
contents of M(DP).
Operation:
(A) = (M(DP)) ?
SNZ1 (Skip if Non Zero condition of external 1 interrupt request flag)
0000111001
039
11
–
V11 = 0: (EXF1) = 1
Grouping:
Interrupt operation
Description: When V11 = 0 : Skips the next instruction
when external 1 interrupt request flag EXF1
is “1.” After skipping, clears (0) to the EXF1
flag. When the EXF1 flag is “0,” executes
the next instruction.
When V11 = 1 : This instruction is equiva-
lent to the NOP instruction.
Operation:
V11 = 0: (EXF1) = 1 ?
After skipping, (EXF1)
← 0
V11 = 1: SNZ1 = NOP
(V11 : bit 1 of the interrupt control register V1)