| 摘要 |
PURPOSE:To increase the operating efficiency, by the definition of the operaton of the logic operating circuit in byte unit. CONSTITUTION:The logic operating circuits ALU1, 2 performing the logic operation by 1 byte have the internal register 20 and 21 of a plurality, and the designation is made by REG-A, REG-B at the firmware format (register designation section). Further, the function of the ALU1, 2 is designated with the operation code sections OP1, OP2, the instruction is transmitted via the lines 15, 16, and ALU1, 2 perform independent operation respectively. Further, the output from ALU1, 2 is dedined with the operation result outputs OUT1, OUT2, which can perform arbitrary designation such as output of register value, output of ''0'' data and output of operation result. |
