SCOOP_IMR
iowrite16(0x0000, sdev->base + SCOOP_IMR); /* 18 */
nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;
write_scoop_reg(scoop, SCOOP_IMR, nimr);
write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0);