Chapter 3 Instruction Definition
INCA [m]
Description
Operation
Affected flag(s)
JMP addr
Description
Increment Data Memory with result in ACC
Data in the specified Data Memory is incremented by 1. The result is stored in the Accumu-
lator. The contents of the Data Memory remain unchanged.
ACC
¬
[m] + 1
Z
Jump unconditionally
The contents of the Program Counter are replaced with the specified address. Program
execution then continues from this new address. As this requires the insertion of a dummy
instruction while the new address is loaded, it is a two cycle instruction.
Program Counter
¬
addr
None
Move Data Memory to ACC
The contents of the specified Data Memory are copied to the Accumulator.
ACC
¬
[m]
None
Move immediate data to ACC
The immediate data specified is loaded into the Accumulator.
ACC
¬
x
None
Move ACC to Data Memory
The contents of the Accumulator are copied to the specified Data Memory.
[m]
¬
ACC
None
No operation
No operation is performed. Execution continues with the next instruction.
No operation
None
Logical OR Data Memory to ACC
Data in the Accumulator and the specified Data Memory perform a bitwise logical OR oper-
ation. The result is stored in the Accumulator.
ACC
¬
ACC
²OR²
[m]
Z
Operation
Affected flag(s)
MOV A,[m]
Description
Operation
Affected flag(s)
MOV A,x
Description
Operation
Affected flag(s)
MOV [m],A
Description
Operation
Affected flag(s)
NOP
Description
Operation
Affected flag(s)
OR A,[m]
Description
Operation
Affected flag(s)
129
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