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APPENDIX
A.7
How to Read the Instruction List
Table A.7-1 Description of Items in the Instruction List describes the items used in the
2
F
MC-16LX Instruction List, and Table A.7-2 Explanation on Symbols in the Instruction
List describes the symbols used in the same list.
I Description of instruction presentation items and symbols
Table A.7-1 Description of Items in the Instruction List (1/2)
Mnemonic
Operation
638
Item
Uppercase, symbol: Represented as is in the assembler.
Lowercase: Rewritten in the assembler.
Number of following lowercase: Indicates bit length in the instruction.
#
Indicates the number of bytes.
~
Indicates the number of cycles.
Indicates the number of times a register access is performed during
instruction execution.
RG
The number is used to calculate the correction value for CPU intermittent
operation.
Indicates the correction value used to calculate the actual number of cycles
during instruction execution.
B
The actual number of cycles during instruction execution can be determined
by adding the value in the ~ column to this value.
Indicates the instruction operation.
Indicates the special operation for bits 15 to 08 of the accumulator.
Z: Transfers 0.
LH
X: Transfers after sign extension.
−
: No transfer
Indicates the special operation for the 16 high-order bits of the accumulator.
*: Transfers from AL to AH.
−
: No transfer
AH
Z: Transfers 00
X: Transfers 00
I
I (interrupt enable), S (stack), T (sticky bit),
S
N (negative), Z (zero), V (overflow), C (carry).
T
Each indicates the state of each flag:
N
*: Changes upon instruction execution.
−
Z
: No change
V
Z: Set upon instruction execution.
C
X: Reset upon instruction execution.
Description
to AH.
H
or FF
to AH after AL sign extension.
H
H
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