This document provides the technical circuit schematic for the M7820 Interrupt Control board, designed by Digital Equipment Corporation. The schematic includes detailed logic gate representations for bus control signals such as BUS BR A L, BUS SACK L, and BUS BBSY L, along with interrupt request handling logic for INTR DONE A H and INTR DONE B H. It includes component reference designators for resistors, capacitors, and integrated circuits (DEC7400 series), as well as a transistor and diode conversion chart.
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