PIC_ICW4
REGVAL8(BONITO_PCIIO_BASE + IO_ICU1 + PIC_ICW4) = ICW4_8086;
REGVAL8(BONITO_PCIIO_BASE + IO_ICU2 + PIC_ICW4) = ICW4_8086;
REGVAL8(HTB_IO_BASE + IO_ICU1 + PIC_ICW4) = ICW4_8086;
REGVAL8(HTB_IO_BASE + IO_ICU2 + PIC_ICW4) = ICW4_8086;