gayle_intr_ack
void gayle_intr_ack(uint8_t);
gayle_intr_ack(0x7C | (intreq & 0x03));
gayle_intr_ack(0);
gayle_intr_ack(0xff);
gayle_intr_ack(0xfc);
gayle_intr_ack(GAYLE_INT_IDE | GAYLE_INT_STSCHG |
gayle_intr_ack(GAYLE_INT_IDE | GAYLE_INT_DETECT);
gayle_intr_ack((intreq ^ 0x2c) | 0xc0);
gayle_intr_ack(0xc0);
gayle_intr_ack(GAYLE_INT_IDE | GAYLE_INT_DETECT);
gayle_intr_ack(0x7C | (intreq & GAYLE_INT_IDEACK));
gayle_intr_ack(0x7C | (intreq & GAYLE_INT_IDEACK));