US5715433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic software model for emulating hardware
Assignee: Synopsys Inc
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Filing: 1995-04-20
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Granted: 1998-02-03
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Expires: 2015-04-20
Abstract
Abstract A dynamic hardware emulation model (10) to be used with a hardware simulator for testing a user device(26) under test. A programming interface (12) controls a memory pool (14) and a command processor/bus manager (16) such that a command cycle is initiated to read and write data through a computer bus (24), to and from the user device (26). The programming interface (12) and the user device (26) can act in a master or slave mode. When the user device (26) is in slave mode, a slave memory (18) contains expected data for comparison purposes, and an arbiter (20) determines which device will have access to the computer bus (24).
Inventors
- 👤 Rajan Raghavan
- 👤 Jonathan Warren Liu
- 👤 Timothy Thomas Rhodes
- 👤 Kodamanchilli Vijay Anand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:26
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/22; G06F11/2205; G06F11/221; G06F11/26; G06F11/261; G06F30/00; G06F30/30; G06F30/32; G06F30/33
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
129 words
A software model for use with a computer bus device test simulator for testing a user device, comprising: a command processor for processing a series of commands; a first memory portion for receiving information relating to the commands; a programming interface for providing the commands to the command processor and the information to the first memory portion; and a second memory portion for receiving data from said programming interface and from the user device: wherein said first memory portion includes a plurality of access ports: and the plurality of access ports includes a read/write port linking said programming interface and said first memory portion, a read port linking said command processor to said first memory portion, and a write port linking said command processor to said first memory portion.
Claim 2
Dependent Claim
129 words
A software model for use with a computer bus device test simulator for testing a user device, comprising: a command processor for processing a series of commands; a first memory portion for receiving information relating to the commands; a programming interface for providing the commands to the command processor and the information to the first memory portion; and a second memory portion for receiving data from said programming interface and from the user device: wherein said first memory portion includes a plurality of access ports: and the plurality of access ports includes a read/write port linking said programming interface and said first memory portion, a read port linking said command processor to said first memory portion, and a write port linking said command processor to said first memory portion.
Claim 3
Dependent Claim
29 words
The model of claim 1, wherein: information provided to said first memory portion consists of data to be used by the command, a byte enable, and a wait state.
Claim 4
Dependent Claim
14 words
The model of claim 1, wherein: the series of commands includes a read-verify command.
Claim 5
Dependent Claim
14 words
The model of claim 1, wherein: the series of commands includes a read-modify-write command.
Claim 6
Dependent Claim
14 words
The model of claim 1, wherein: said first memory portion includes three access ports.
Claim 7
Dependent Claim
22 words
The model of claim 1, and further including: an arbiter for controlling access of the user device to the second memory portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-02 | 2001-08-04 | 2002-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-02 | 2005-08-04 | 2006-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-02 | 2009-08-04 | 2010-02-03 | $7700.00 | Window Closed / Lapsed |