Static information storage and retrieval – Magnetic bubbles – Guide structure
Patent
1995-10-23
1998-04-07
Chan, Eddie P.
Static information storage and retrieval
Magnetic bubbles
Guide structure
395429, 395481, 39518507, 395308, 36518533, G06F 1300
Patent
active
057375674
ABSTRACT:
A network comprising a central processing module and maintenance subsystem which provides a system for rapid loading of instruction words in a microcode RAM whereby microcode instruction words from the maintenance subsystem are preliminarily loaded into a flash memory in the central processing module. A maintenance controller transfers the microcode instruction words from the flash memory over a transfer bus to a data path array which connects to a processor-instruction memory bus for enabling microcode addresses and data words to be rapidly transferred into a microcode RAM instruction memory. A programmable controller activated by the maintenance controller in the central processing module then regulates the transfer of data to the microcode RAM by providing incrementation of the addresses of the instruction words on an automatic basis and thus relieving the processor of this function. Due to the pre-loading of the microcode instruction words into flash memory of the central processing module, there is provided a rapid loading of the microcode RAM during initialization routines without the need to burden the processor or the maintenance subsystem.
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Jeppesen, III James Henry
Whittaker Bruce Ernest
Chan Eddie P.
Kim Hong C.
Kozak Alfred W.
Petersen Steven R.
Starr Mark T.
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