/* icu.h */

#define ICU1    0x20            /* I/O port address, 8259A #1           */
#define ICU2    0xA0            /* I/O port address, 8258A #2           */

#define OCR     ICU1            /* Operation Command Register           */
#define IMR     (ICU1+1)        /* Interrupt Mask Register              */

#define EOI     0x20            /* Non-specific end of interrupt        */