HD6433308 Datasheet, PDF (304/349 Pages) Hitachi Semiconductor – Hitachi Single-Chip MicroComputer

A.2 Operation Code Map
Table A-2 is a map of the operation codes contained in the first byte of the instruction code (bits 15
to 8 of the first instruction word).
Some pairs of instructions have identical first bytes. These instructions are differentiated by the
first bit of the second byte (bit 7 of the first instruction word).
Instruction when first bit of byte 2 (bit 7 of first instruction word) is "0."
Instruction when first bit of byte 2 (bit 7 of first instruction word) is "1."
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