NUBUS_SOURCE_BASE 76 arch/m68k/mac/oss.c irq_num = NUBUS_SOURCE_BASE + 5; NUBUS_SOURCE_BASE 146 arch/m68k/mac/oss.c irq -= NUBUS_SOURCE_BASE; NUBUS_SOURCE_BASE 179 arch/m68k/mac/oss.c irq -= NUBUS_SOURCE_BASE;