04402042 is referenced by 36 patents and cites 2 patents.

A single-chip microprocessor device of the MOS/LSI type contains an ALU, several interal busses, a number of address/data registers, and an instruction register with associated control decode or microcontrol generator circuitry. The device communicates with external memory and peripherals by a bidirectional multiplexed address/data bus and a number of control lines. Each instruction word produces a sequence of microcodes which are generated by selecting an entry point for the first address of the control ROM then executing a series of jumps, depending upon the instruction. Usually operands must be fetched from memory and the result stored in memory. Operating speed is increased by fetching the next instruction and starting to generate operand addresses before the current result has been calculated and stored. The microprocessor can perform a memory access operation and an ALU operation in the same machine cycle.

Title
Microprocessor system with instruction pre-fetch
Application Number
6/209914
Publication Number
4402042
Application Date
November 24, 1980
Publication Date
August 30, 1983
Inventor
Karl M Guttag
Houston
TX, US
Agent
John G Graham
Assignee
Texas Instruments Incorporated
TX, US
IPC
G06F 9/38
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