Registers – Systems controlled by data bearing records – Time analysis
Patent
1977-11-01
1979-05-22
Smith, Jerry
Registers
Systems controlled by data bearing records
Time analysis
235304, 324 73R, G06F 1100, G01R 1512
Patent
active
041561325
ABSTRACT:
An apparatus for simulating error conditions associated with an integrated circuit, the integrated circuit being an in-line component of an electronic circuit. The apparatus, in response to the receipt of specified commands, accepts and stores data and control information, the control information including an integrated circuit pin specification portion and a voltage level specification portion, the data information specifying integrated circuit pin number identification. Two decoders decode the voltage level specification and integrated circuit pin specification portions of the stored control information, respectively. A switching circuit connected to a source of voltage levels and to the electronic circuit, and responsive to the decoded integrated circuit pin specification, applies to the integrated circuit pin specified by the stored data information a voltage level specified by the decoded voltage level specification. The voltage level is applied as a non-in-line input signal to the integrated circuit pin or a non-in-line output signal from the integrated circuit pin in accordance with the decoded integrated circuit pin specification. Provision is made for employing a data processor to programmatically control the simulation of errors. A process for using the apparatus to develop and evaluate diagnostic programs is disclosed.
REFERENCES:
patent: 3710350 (1973-01-01), Yoshitake et al.
patent: 3739349 (1973-06-01), Burdette, Jr. et al.
patent: 3849726 (1974-11-01), Justice
patent: 3916306 (1975-10-01), Patti
patent: 3927371 (1975-12-01), Pomeranz et al.
patent: 4044244 (1977-08-01), Foreman et al.
Burroughs Corporation
Chung Edmund M.
Peterson Kevin R.
Smith Jerry
Starr Mark T.
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