Appendix B Overview Of Instructions; Figure B-1 Instruction Code And Instruction Map; Table B-1 Instruction List Symbols - Fujitsu F2MC-8L Series Hardware Manual

APPENDIX B Overview of Instructions

This appendix describes the F
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Overview of F MC-8L Instructions
The F
instruction code consists of a machine instruction and operands that follow.
Figure B-1 illustrates a machine code on the instruction map.
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• F MC-8L instructions are classified into four types: transfer instructions, arithmetic operation
instructions, branch instructions, and miscellaneous instructions.
• A variety of addressing methods is supported.
available depending on the selected instruction and specified operands.
• The instruction set includes bit manipulation instructions, allowing read-modify-write
operation.
• The instruction set also includes instructions for special operations.
Instruction List Symbols
Table B-1 lists symbols used in the descriptions of instruction codes in this chapter.

Table B-1 Instruction List Symbols

Symbol
#vct
#d8
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MC-8L instruction set.
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MC-8L has 140 signal-byte machine instructions (256 bytes on the map).

Figure B-1 Instruction Code and Instruction Map

Instruction code Machine instruction
Upper 4 bits
dir Direct address (8 bits)
off Offset (8 bits)
ext Extended address (16 bits)
Vector table number (3 bits)
Immediate data (8 bits)
0 to 2 bytes are given depending on each instruction.
* 1 byte
Operand
[Instruction map]
Meaning
APPENDIX B Overview of Instructions
Operand
Ten different addressing methods are
Each
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