December 9, 2000

### 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.

### SEE ALSO

podulebus(4)