Boots – shoes – and leggings
Patent
1995-06-01
1997-03-18
Lall, Parshotam S.
Boots, shoes, and leggings
395309, 395800, 364DIG1, G06F 1340, G06F 934
Patent
active
056130783
ABSTRACT:
A microprocessor having a data-width change function has a core section in the microprocessor for fetching an instruction from the external memories in instruction fetch request, transferring data between the external memories and the microprocessor in data access request, and executing the instruction fetched and processing operand access operation, internal buses connected to the core section for transferring data to the core section, a memory for storing first bus indication data and second bus-width indication data indicating a bus-width of specified external buses, a bus-width change circuit connected to the internal buses and the external buses for changing specified external buses in the external buses to connect specified buses in the internal buses to be used during the instruction fetch bus cycle and the data access bus cycle, and a bus-width change controller connected to the bus change circuit and the memory for changing the bus-width of the buses in the external data buses based on the first bus-width indication data stored in the memory at the instruction fetch operation, and the second bus-width indication data stored in the memory, in order to transfer data with specified bus-width of the external data buses.
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Electronic Design, vol. 33, No. 12, pp. 219-225, May, 1985, C.K. Zoch, et al., "68020 Dynamically Adjusts its Data Transfers to Match Peripheral Ports".
Kabushiki Kaisha Toshiba
Lall Parshotam S.
Vu Viet
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