Hardware manual

Rev. 3.0, 09/98, page 305 of 361
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.”