Numeric controller

Abstract

Abstract PURPOSE: To shorten a processing time by performing bit-by-bit operation instead of byte-by-byte or word-by-word operation when executing instructions of a general microprocessor. CONSTITUTION: In a readout cycle, a selector SE1 outputs data, read out of an RAM and having bits "0", "1", "0", and "0" as its high-order four bits, to the data bus 2 of a CPU. In a write cycle, on the other hand, a register RE stores data of an address consisting of the specific high-order four bits. Then, data outputted to the specific bit line of the bus 2 of the CPU is written in the specific bit of the specified address of the RAM, and data from the register RE is written in a bit other than the specific bit of the address of the RAM through selectors SE2WSE17 and a buffer 3. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Shinichi Isobe
• 👤 Mikio Yonekura

Bibliographic Details