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UNIXBP(4) |
Kernel Interfaces Manual (Acorn26) |
UNIXBP(4) |
NAME
unixbp — Unix Backplane driver
SYNOPSIS
unixbp0 at ioc0 bank 6
DESCRIPTION
The unixbp driver controls the interrupt-masking hardware on the expansion-card backplane of certain systems. This hardware gives NetBSD the ability to selectively block interrupts from particular expansion cards, and to determine which cards are currently generating interrupts by examining a single register.