EP0055348A2
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EP
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Reprogrammable array logic systems
Assignee: International Business Machines Corp
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Filing: 1981-10-20
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Granted: —
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Expires: 2001-10-20
Abstract
Abstract A described dynamically reprogrammable logic array system includes an AND array (1) and an OR array (2) having an output register (3) at the output of the OR array. Commands stored in a load directory (9) specify subarrays within an array for repersonalization, an addressable location In load storage (10) containing the personality to be loaded into the subarrays. The load commands stored in the load directory are selectable by logic array output (R;r), by chaining or externally.
Inventors
- 👤 Almerin Cartwright O'hara, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 11:24
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/173; H03K19/177; H03K19/17704; H03K19/17708; H03K19/17712
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
74 words
A reprogrammable logic array system comprising a regprogrammable logic array (1, 2, 3 and/or 4) having both a data input (6) and a logic personality input from a storage (10) storing such logic personality characterized in that the logic personality input includes control logic (8) responsive to an output (R;r) of the array to control both the personality input from the storage and the array segment into which the personality is to be written.
Claim 2
Dependent Claim
74 words
A reprogrammable logic array system comprising a regprogrammable logic array (1, 2, 3 and/or 4) having both a data input (6) and a logic personality input from a storage (10) storing such logic personality characterized in that the logic personality input includes control logic (8) responsive to an output (R;r) of the array to control both the personality input from the storage and the array segment into which the personality is to be written.
Claim 3
Dependent Claim
74 words
An array system as claimed in claim 1 in which the control logic is arranged to access storage (9) in response to the array output to obtain a load command specified by that output, such load command specifying both the array segment definition and the personality location definition in storage (10), the control logic accessing the array in response to the array segment definition and storage (10) in response to the personality location definition.
Claim 4
Dependent Claim
47 words
An array system as claimed in either preceding claim in which the array is accessible sequentially by row and the control logic is arranged to control the personality transfer sequentially by row from a starting definition to a finishing definition under the control of a timer (clock).
Claim 5
Dependent Claim
28 words
An array system as claimed in any preceding claim in which there are a plurality of arrays and the control means is capable of accessing each array independently.
Claim 6
Dependent Claim
38 words
An array system as claimed in claim 2 in which the load command specifies the next load command whereby the control logic can accommodate load command chaining, the control logic also being responsive to externally applied load commands.
References Cited (Backward Citations)
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