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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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82C55 데이터시트(PDF) 6 Page - Intel Corporation |
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82C55 데이터시트(HTML) 6 Page - Intel Corporation |
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6 / 23 page  82C55A 231256 – 7 Figure 7 Bit SetReset Format Interrupt Control Functions When the 82C55A is programmed to operate in mode 1 or mode 2 control signals are provided that can be used as interrupt request inputs to the CPU The interrupt request signals generated from port C can be inhibited or enabled by setting or resetting the associated INTE flip-flop using the bit setreset function of port C This function allows the Programmer to disallow or allow a specific IO device to interrupt the CPU with- out affecting any other device in the interrupt struc- ture INTE flip-flop definition (BIT-SET)INTE is SETInterrupt enable (BIT-RESET)INTE is RESETInterrupt disable Note All Mask flip-flops are automatically reset during mode selection and device Reset 6 |
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