LCD Type MCU
SNZ [m].i
Description
Skip if bit i of Data Memory is not 0
If bit i of the specified Data Memory is not 0, the following instruction is skipped. As this re-
quires the insertion of a dummy instruction while the next instruction is fetched, it is a two
cycle instruction. If the result is 0 the program proceeds with the following instruction.
Skip if [m].i
¹
0
None
Subtract Data Memory from ACC
The specified Data Memory is subtracted from the contents of the Accumulator. The result
is stored in the Accumulator. Note that if the result of subtraction is negative, the C flag will
be cleared to 0, otherwise if the result is positive or zero, the C flag will be set to 1.
ACC
¬
ACC
-
[m]
OV, Z, AC, C
Subtract Data Memory from ACC with result in Data Memory
The specified Data Memory is subtracted from the contents of the Accumulator. The result
is stored in the Data Memory. Note that if the result of subtraction is negative, the C flag will
be cleared to 0, otherwise if the result is positive or zero, the C flag will be set to 1.
[m]
¬
ACC
-
[m]
OV, Z, AC, C
Subtract immediate data from ACC
The immediate data specified by the code is subtracted from the contents of the Accumu-
lator. The result is stored in the Accumulator. Note that if the result of subtraction is nega-
tive, the C flag will be cleared to 0, otherwise if the result is positive or zero, the C flag will
be set to 1.
ACC
¬
ACC
-
x
OV, Z, AC, C
Swap nibbles of Data Memory
The low-order and high-order nibbles of the specified Data Memory are interchanged.
[m].3~[m].0
«
[m].7 ~ [m].4
None
Swap nibbles of Data Memory with result in ACC
The low-order and high-order nibbles of the specified Data Memory are interchanged. The
result is stored in the Accumulator. The contents of the Data Memory remain unchanged.
ACC.3 ~ ACC.0
¬
[m].7 ~ [m].4
ACC.7 ~ ACC.4
¬
[m].3 ~ [m].0
None
Operation
Affected flag(s)
SUB A,[m]
Description
Operation
Affected flag(s)
SUBM A,[m]
Description
Operation
Affected flag(s)
SUB A,x
Description
Operation
Affected flag(s)
SWAP [m]
Description
Operation
Affected flag(s)
SWAPA [m]
Description
Operation
Affected flag(s)
134