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APPENDIX
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Indirect specification branch addressing (@eam)
The address of the branch destination is the word data at the address indicated by eam.
Figure B.4-13 Example of Indirect Specification Branch Addressing (@eam)
JMP @RW0 (This instruction causes an unconditional branch by register indirect
Before execution
After execution
638
addressing.)
PC 3 C 2 0
RW0 3 B 2 0
PC 3 B 2 0
RW0 3 B 2 0
PCB 4 F
4F3B20
H
4F3C20
H
PCB 4 F
4F3C21
H
Memory space
Next instruction
7 3
JMP @RW0
0 0
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