GENERAL PURPOSE DIGITAL PROCESSOR FOR TERMINAL DEVICES

摘要

A digital processor includes: a main read only memory store providing instruction and constant data signals; a random access memory store for storing variable data signals; an input/output port unit communicating with the terminal devices; an interrupt address generator controlling the interrupt priority for the terminal devices; an arithmetic and logical unit; an instruction decoding and execution unit controlled according to instructions in a fast access read only memory store address controlled by the instruction signals in the main read only memory store for controlling the operations of the digital processor; and a group of working and general registers for buffer storage of digital signals. Interconnections between the units of the processor are through a single bidirectional data bus. Process steps control the operation of the processor according to an instruction format.