Mode conversion of computer commands

Details Mode conversion of computer commands Mode conversion of computer commands

1987-03-24

1989-12-26

Heckler, Thomas M.

Boots, shoes, and leggings

3642329, 3642412, G06F 500

Patent

active

048902195

ABSTRACT:
A personal computer system which associated interrupt controller is preferably designed to operate with programs and respond to interrupt related commands in one mode, such as level sensitive mode, but is provided with circuitry that enables the system to convert and respond to interrupt-related software commands in another mode, such as edge sensitive (triggered) mode, the system there treating the edge mode signals just as if they were level mode signals.

REFERENCES:
patent: 3938101 (1976-02-01), Lewis et al.
New Electronics, Nov. 1986, p. 24; W. Millar "Interfacing the ADC0808".
IBM Technical Disclosure Bulletin, vol. 29, No. 6, Nov. 1986, pp. 2380-2381, Interrupt Sharing for Personal Computer.
IBM Technical Discl. Bull., vol. 28, No. 11, Apr. 1986, pp. 4971-4972, "Hardware Interrupt Vectoring Circuit for Non--Compatible Peripherals".
IBM Technical Disclosure Bulletin, vol. 29, No. 6, Nov. 1986, pp. 2380-2381, "Interrupt Sharing for Personal Computers".
IBM Technical Disclosure Bulletin, vol. 25, No. 9, pp. 4651-4655, G. Davis, "Signature Analysis Testing".
Manual Excerpt: "8259A/8259A-2/8259A-8 Programmable Interrupt Controller", Microsystems Components Handbook, vol. 1, 1984, Intel Corporation, Front Cover, front is piece, pp. 2-120 to 2-136.

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