Appendix B Overview Of The Instructions; Overview Of The Instructions Of The F - Fujitsu F2MC-8L F202RA Hardware Manual

APPENDIX B Overview of the Instructions

APPENDIX B
This section describes the instructions used for the F
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Overview of the Instructions of the F

2
The F MC-8L has 140 kinds of 1-byte machine instructions (actually, the map is 256 bytes). An instruction
and succeeding operands make an instruction code.
Figure B-1 shows the correspondence between the instruction codes and instruction map.
Figure B-1 Correspondence between Instruction Codes and Instruction Map
• The instructions are classified into four groups including transfer instructions and branch instructions.
• Various methods for addressing are supported. Depending on the selection of an instruction and
specification of operands, 10 kinds of addressing can be selected.
• Bit manipulation instructions are supported, so read-modify-write operation is possible.
• Instructions directing special operations are supported.
380
Overview of the Instructions
1 byte
Machine
Instruction code
instruction
Higher 4 bits
2
MC-8L.
2
MC-8L
0 to 2 bytes are provided depending
on the instruction.
Operand Operand
[Instruction map]