Boots – shoes – and leggings
Patent
1982-12-01
1985-07-30
Thomas, James D.
Boots, shoes, and leggings
G06F 938, G06F 900
Patent
active
045325898
ABSTRACT:
In a data processing apparatus executing a plurality of instructions in a pipeline mode by dividing each of the instructions into a plurality of stages, its operation circuit includes a first execution (E) unit capable of execution of operations required by all of the plural instructions and a second E unit capable of execution of operations required by part of the plural instructions only. A queue of data including decoded information of the instructions required for execution of operation stages are stored in a circuit to be selectively supplied by first and second circuits to the first and second E units, respectively. The first and second circuits sequentially select succeeding data in synchronism with the end of operations in the first and second E units respectively. As a result, when a stage of a succeeding instruction requires the result of operation of a preceding instruction being executed, that stage of the succeeding instruction is executed after the second E unit completes the operation of the preceding instruction, even when the first E unit is executing an instruction further preceding the preceding instruction.
REFERENCES:
patent: 4110822 (1978-08-01), Porter et al.
patent: 4200927 (1980-04-01), Hughes et al.
patent: 4251859 (1981-02-01), Momose
patent: 4270181 (1981-05-01), Tanakura et al.
patent: 4305124 (1981-12-01), Marro et al.
Shimizu Tsuguo
Shintani Yoichi
Wada Kenichi
Yamaoka Akira
Hitachi , Ltd.
Niessen William G.
Thomas James D.
LandOfFree
Digital data processor with two operation units does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital data processor with two operation units, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital data processor with two operation units will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2376393