Memory system and accessing method

Details Memory system and accessing method Memory system and accessing method

1983-09-08

1986-07-15

Springborn, Harvey E.

Boots, shoes, and leggings

G06F 1206

Patent

active

046010092

ABSTRACT:
A memory system has a first memory such as a magnetic bubble memory and a second memory such as a RAM having a faster access time than the first memory. The first memory is divided into a plurality of blocks each of which has program steps stored therein. The second memory has a plurality of unit chains which correspond to the blocks of the first memory respectively and in each of which step information representative of the number of steps stored in the corresponding block and pointer information indicative of a connection to a next block are stored. The step information in the unit chains are successively read in accordance with predetermined start block information and the pointer information to count the total number of steps on the basis of the read step information. From the first memory is read information in the block corresponding to the unit chain of the second memory with respect to which the counting is made when the counted number of steps reaches or exceeds a program step number to be detected.

REFERENCES:
patent: 4126894 (1978-11-01), Cronshaw
patent: 4128891 (1978-12-01), Lin
patent: 4130873 (1978-12-01), Fioretta
patent: 4221003 (1980-09-01), Chang
patent: 4368513 (1983-01-01), Meltzer
patent: 4393500 (1983-07-01), Imazeki
patent: 4419740 (1983-12-01), Hevenor
patent: 4447887 (1984-05-01), Imazeki

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