EISA_LEVEL_CNTL
eisa_level_intr_mask = (inb(EISA_LEVEL_CNTL + 1) << 8) |
inb(EISA_LEVEL_CNTL) | ((uint_t)INT32_MAX + 1);
eisa_level_intr_mask = (inb(EISA_LEVEL_CNTL + 1) << 8) |
inb(EISA_LEVEL_CNTL) | ((uint_t)INT32_MAX + 1);