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APPENDIX B Overview of the Instructions
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Explanation on the Items of Instructions’ List
Table B-2 Explanation on Items of Instructions’ List
Item Description
MNEMONIC Represents the instruction coded in the assembler.
~ Indicates the number of cycles of the instruction (number of instruction cycles).
# Indicates the number of bytes of the instruction.
Operation Indicates the operation of the instruction.
TL,TH,AH
Indicates how the contents of TL, TH, and AH change (automatic transfer from A to
T) when the instruction is executed.
The codes in this column indicate the following:
• - indicates no change.
• dH indicates the higher 8 bits of the data coded for the operation.
• AL and AH indicate the contents of AL and AH just before the execution of the
instruction.
• 00 indicates that it becomes 00.
N,Z,V,C
Indicates whether the instruction changes the corresponding flags.
If ( is shown in this column, the instruction changes the corresponding flags.
OP CODE
Indicates the instruction code. If the appropriate instruction occupies multiple codes,
they are listed under the following rule:
Example:
48 to 4F means the serial numbers from 48 to 4F.