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US4777593A Expired / Lapsed US ⏱️ 0.0 years remaining

Vector processing apparatus including means for identifying the occurrence of exceptions in the processing of vector elements

Assignee: Hitachi Ltd
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Filing: 1984-12-21
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Granted: 1988-10-11
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Expires: 2004-12-21
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Abstract

Abstract A vector processing apparatus has a number of pipeline arithmetic units operating concurrently to execute a set of vector instructions dealing with vector elements. Stack registers are provided for each arithmetic unit to hold the vector instruction address, leading vector element position and vector register internal address, so that one of the exceptions that can be detected successively by several arithmetic units during the process of the vector instructions is selected on a priority basis through the comparison of information in the stack of the currently detected exception with information of exception detected previously.

Inventors

  • 👤 Yaoko Yoshida

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 06:21
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/30; G06F9/38; G06F9/3861; G06F9/3865; G06F15/00; G06F15/76; G06F15/80; G06F15/8053; G06F15/8076

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 156 words
A vector processing apparatus having vector registers and a plurality of functional facilities capable of operating concurrently and intended to process vectors having a larger number of vector elements than a vector register has the capacity to store, each functional facility having means for detecting an exception relating to its operation, said apparatus comprising: means for holding information in correspondence to each of said functional facilities, including the address of an instruction under process by that functional facility, leading vector element position information for a vector element to be processed by said instruction and a vector register internal address of a vector element at which an exception has been detected by said functional facility; and means for reading out the information in said holding means in response to a signal indicating detection of an exception from any functional facility and for selecting information corresponding to one of said functional facilities in accordance with a predetermined rule.
Claim 2
Dependent Claim 156 words
A vector processing apparatus having vector registers and a plurality of functional facilities capable of operating concurrently and intended to process vectors having a larger number of vector elements than a vector register has the capacity to store, each functional facility having means for detecting an exception relating to its operation, said apparatus comprising: means for holding information in correspondence to each of said functional facilities, including the address of an instruction under process by that functional facility, leading vector element position information for a vector element to be processed by said instruction and a vector register internal address of a vector element at which an exception has been detected by said functional facility; and means for reading out the information in said holding means in response to a signal indicating detection of an exception from any functional facility and for selecting information corresponding to one of said functional facilities in accordance with a predetermined rule.
Claim 3
Dependent Claim 16 words
A vector processing apparatus according to claim 1, wherein said functional facilities comprise pipeline arithmetic units.
Claim 4
Dependent Claim 37 words
A vector processing apparatus according to claim 2, wherein said holding means comprises means for holding the address of an instruction and leading vector element position information in correspondence to arithmetic stages of said pipeline arithmetic unit.
Claim 5
Dependent Claim 23 words
A vector processing apparatus according to claim 3, wherein said exception includes at least one of an access exception and an arithmetic exception.
Claim 6
Dependent Claim 38 words
A vector processing apparatus according to claim 1, wherein said reading out means includes means for selecting that information received from said holding means which includes the smallest vector element number for an instruction having the earliest address.

References Cited (Backward Citations)

US4025771A Cited
US4101960A Cited
US4270181A Cited
US4302818A Cited
US4298936A Cited
US4338675A Cited
US4525796A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-10-11 1992-04-11 1992-10-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-10-11 1996-04-11 1996-10-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-10-11 2000-04-11 2000-10-11 $7700.00 Window Closed / Lapsed

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