CHIP_IO_W2_SYS_START
*iohp = (ALPHA_PHYS_TO_K0SEG(CHIP_IO_W2_SYS_START(v)) >> 5) +
if ((ioh << 5) >= CHIP_IO_W2_SYS_START(v) &&
(ioh - (CHIP_IO_W2_SYS_START(v) >> 5));
__S(__C(CHIP,_io_map)), CHIP_IO_W2_SYS_START(v),