Indirect and Relative Indirect Calls (Class 12)These two addressing modes for CALL instructions are grouped together in Class 12 since they don't require an operand to be fetched. Field OTA indicates the addressing mode as following:
0: Indirect
1: Relative Indirect
The branch address is given by a general purpose register used as a pointer (p).
[12][0][p][PC] Example: CALLX d ; 0xc071
[12][1][p][PC] CALLRX d ; 0xc171
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