Portable tester (qualifier) for evaluating and testing SCSI interface magnetic disc drives in accordance with ANSI SCSI-A and SCSI-2 definitions
First Claim
1. A programmable qualifier for testing and evaluating SCSI magnetic disc drives, and the like, connected to the qualifier by an SCSI bus, said testing and evaluation being in accordance with American National Standards Institutes (ANSI) standardized small computer system interface (SCSI) protocols, said qualifier comprising:
- a microprocessor;
a cathode ray tube, a keyboard, first circuitry connecting the microprocessor to the cathode ray tube;
second circuitry connecting the keyboard to the microprocessor to cause the microprocessor to introduce signals to the cathode ray tube through said first circuitry;
third circuitry connecting the microprocessor to the SCSI bus to cause binary information to flow back and forth on the bus between the qualifier and the disc drive selected by the qualifier, said binary information being interpreted by the microprocessor and caused thereby to be displayed by the cathode ray tube in a predetermined format which includes ANSI defined names, labels, error messages, and the like.
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Accused Products
Abstract
A programmable menu driven qualifier designed to make the abstract nature of small computer system interface (SCSI) definition easier to understand and work with. The qualifier is intended for testing and evaluating direct access and sequential access SCSI devices, such as disc drives and tape drives connected to the qualifier by an SCSI bus, the testing being carried out in accordance with ANSI SCSI-1 and ANSI SCSI-2 definitions. The qualifier is completely menu driven, and all commands are executed with a single keystroke of the keyboard. The qualifier uses a simple built-in concept which allows an operator quickly to become familiar with an SCSI protocol and command structure.
35 Citations
9 Claims
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1. A programmable qualifier for testing and evaluating SCSI magnetic disc drives, and the like, connected to the qualifier by an SCSI bus, said testing and evaluation being in accordance with American National Standards Institutes (ANSI) standardized small computer system interface (SCSI) protocols, said qualifier comprising:
- a microprocessor;
a cathode ray tube, a keyboard, first circuitry connecting the microprocessor to the cathode ray tube;
second circuitry connecting the keyboard to the microprocessor to cause the microprocessor to introduce signals to the cathode ray tube through said first circuitry;
third circuitry connecting the microprocessor to the SCSI bus to cause binary information to flow back and forth on the bus between the qualifier and the disc drive selected by the qualifier, said binary information being interpreted by the microprocessor and caused thereby to be displayed by the cathode ray tube in a predetermined format which includes ANSI defined names, labels, error messages, and the like. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
- a microprocessor;
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8. The qualifier defined in claim it and which includes EPROM circuitry for storing the program for the microprocessor.
Specification