diff --git a/sys/dev/isp/isp.c b/sys/dev/isp/isp.c
index 055b4d2e3720..efadc114f6ce 100644
--- a/sys/dev/isp/isp.c
+++ b/sys/dev/isp/isp.c
@@ -155,7 +155,7 @@ isp_reset(isp)
 	DISABLE_INTS(isp);
 
 	/*
-	 * Put the board into PAUSE mode.
+	 * Put the board into PAUSE mode (so we can read the SXP registers).
 	 */
 	ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE);
 
@@ -171,37 +171,68 @@ isp_reset(isp)
 		default:
 			break;
 		}
-	} else if (IS_12X0(isp)) {
-		revname = "12X0";
+	} else if (IS_1240(isp)) {
+		sdparam *sdp = isp->isp_param;
+		revname = "1240";
 		isp->isp_clock = 60;
-	} else if (IS_1080(isp)) {
+		sdp->isp_ultramode = 1;
+		sdp++;
+		sdp->isp_ultramode = 1;
+		/*
+		 * XXX: Should probably do some bus sensing.
+		 */
+	} else if (IS_ULTRA2(isp)) {
+		static char *m = "%s: bus %d is in %s Mode\n";
 		u_int16_t l;
 		sdparam *sdp = isp->isp_param;
-		revname = "1080";
+
 		isp->isp_clock = 100;
+
+		revname = "1080";
 		l = ISP_READ(isp, SXP_PINS_DIFF) & ISP1080_MODE_MASK;
 		switch (l) {
 		case ISP1080_LVD_MODE:
 			sdp->isp_lvdmode = 1;
-			PRINTF("%s: LVD Mode\n", isp->isp_name);
+			CFGPRINTF(m, isp->isp_name, 0, "LVD");
 			break;
 		case ISP1080_HVD_MODE:
 			sdp->isp_diffmode = 1;
-			CFGPRINTF("%s: Differential Mode\n", isp->isp_name);
+			CFGPRINTF(m, isp->isp_name, 0, "Differential");
 			break;
 		case ISP1080_SE_MODE:
 			sdp->isp_ultramode = 1;
-			CFGPRINTF("%s: Single-Ended Mode\n", isp->isp_name);
+			CFGPRINTF(m, isp->isp_name, 0, "Single-Ended");
 			break;
 		default:
-			/*
-			 * Hmm. Up in a wierd mode. This means all SCSI I/O
-			 * buffer lines are tristated, so we're in a lot of
-			 * trouble if we don't set things up right.
-			 */
-			PRINTF("%s: Illegal Mode 0x%x\n", isp->isp_name, l);
+			CFGPRINTF("%s: unknown mode on bus %d (0x%x)\n",
+			    isp->isp_name, 0, l);
 			break;
 		}
+
+		if (IS_1280(isp)) {
+			sdp++;
+			revname[1] = '2';
+			l = ISP_READ(isp, SXP_PINS_DIFF|SXP_BANK1_SELECT);
+			l &= ISP1080_MODE_MASK;
+			switch(l) {
+			case ISP1080_LVD_MODE:
+				sdp->isp_lvdmode = 1;
+				CFGPRINTF(m, isp->isp_name, 1, "LVD");
+				break;
+			case ISP1080_HVD_MODE:
+				sdp->isp_diffmode = 1;
+				CFGPRINTF(m, isp->isp_name, 1, "Differential");
+				break;
+			case ISP1080_SE_MODE:
+				sdp->isp_ultramode = 1;
+				CFGPRINTF(m, isp->isp_name, 1, "Single-Ended");
+				break;
+			default:
+				CFGPRINTF("%s: unknown mode on bus %d (0x%x)\n",
+				    isp->isp_name, 1, l);
+				break;
+			}
+		}
 	} else {
 		sdparam *sdp = isp->isp_param;
 		i = ISP_READ(isp, BIU_CONF0) & BIU_CONF0_HW_MASK;
@@ -241,7 +272,7 @@ isp_reset(isp)
 			isp->isp_clock = 60;
 			break;
 		case 6: 
-			revname = "1040C(?)";
+			revname = "1040C";
 			isp->isp_type = ISP_HA_SCSI_1040C;
 			isp->isp_clock = 60;
                         break; 
@@ -609,7 +640,7 @@ isp_init(isp)
 	 * Must do this first to get defaults established.
 	 */
 	isp_setdfltparm(isp, 0);
-	if (IS_12X0(isp)) {
+	if (IS_DUALBUS(isp)) {
 		isp_setdfltparm(isp, 1);
 	}
 
@@ -629,7 +660,7 @@ isp_scsi_init(isp)
 
 	sdp_chan0 = isp->isp_param;
 	sdp_chan1 = sdp_chan0;
-	if (IS_12X0(isp)) {
+	if (IS_DUALBUS(isp)) {
 		sdp_chan1++;
 	}
 
@@ -724,7 +755,7 @@ isp_scsi_init(isp)
 
 	/* now do per-channel settings */
 	isp_scsi_channel_init(isp, 0);
-	if (IS_12X0(isp))
+	if (IS_DUALBUS(isp))
 		isp_scsi_channel_init(isp, 1);
 
 	/*
@@ -761,7 +792,7 @@ isp_scsi_init(isp)
 	 *  Turn on Fast Posting, LVD transitions
 	 */
 
-	if (IS_1080(isp) ||
+	if (IS_ULTRA2(isp) ||
 	    ISP_FW_REVX(isp->isp_fwrev) >= ISP_FW_REV(7, 55, 0)) {
 		mbs.param[0] = MBOX_SET_FW_FEATURES;
 #ifndef	ISP_NO_FASTPOST_SCSI
@@ -769,7 +800,7 @@ isp_scsi_init(isp)
 #else
 		mbs.param[1] = 0;
 #endif
-		if (IS_1080(isp))
+		if (IS_ULTRA2(isp))
 			mbs.param[1] |= FW_FEATURE_LVD_NOTIFY;
 		if (mbs.param[1] != 0) {
 			isp_mboxcmd(isp, &mbs);
@@ -827,7 +858,7 @@ isp_scsi_channel_init(isp, channel)
 		 * If we're in LVD mode, then we pretty much should
 		 * only disable tagged queuing.
 		 */
-		if (IS_1080(isp) && sdp->isp_lvdmode) {
+		if (IS_ULTRA2(isp) && sdp->isp_lvdmode) {
 			sdf = DPARM_DEFAULT & ~DPARM_TQING;
 		} else {
 			sdf = DPARM_SAFE_DFLT;
@@ -1920,7 +1951,7 @@ ispscsicmd(xs)
 	 * than which we got here to send a command to.
 	 */
 	if (isp->isp_sendmarker) {
-		u_int8_t n = (IS_12X0(isp)? 2: 1);
+		u_int8_t n = (IS_DUALBUS(isp)? 2: 1);
 		/*
 		 * Check ports to send markers for...
 		 */
@@ -2446,12 +2477,7 @@ isp_parse_async(isp, mbox)
 	int bus;
 	u_int32_t fast_post_handle = 0;
 
-	/*
- 	 * It is not documented anywhere that bus is always in OUTMAILBOX6
-	 * for dual bus cards- and we don't have the h/w to prove it either,
-	 * So we'll just assume......
-	 */
-	if (IS_1080(isp) || IS_12X0(isp)) {
+	if (IS_DUALBUS(isp)) {
 		bus = ISP_READ(isp, OUTMAILBOX6);
 	} else {
 		bus = 0;
@@ -2705,8 +2731,9 @@ isp_parse_status(isp, sp, xs)
 		break;
 
 	case RQCS_RESET_OCCURRED:
-		IDPRINTF(2, ("%s: bus reset destroyed command for target %d "
-		    "lun %d\n", isp->isp_name, XS_TGT(xs), XS_LUN(xs)));
+		IDPRINTF(2, ("%s: bus %d reset destroyed command for target %d "
+		    "lun %d\n", isp->isp_name, XS_CHANNEL(xs), XS_TGT(xs),
+		    XS_LUN(xs)));
 		/*
 		 * XXX: Get port number for bus
 		 */
@@ -3214,7 +3241,7 @@ command_known:
 	 * XXX Eventually will be fixed by converting register write/read
 	 * XXX counts to bitmasks.
 	 */
-	if (IS_12X0(isp)) {
+	if (IS_DUALBUS(isp)) {
 		switch (opcode) {
 		case MBOX_GET_RETRY_COUNT:
 		case MBOX_SET_RETRY_COUNT:
@@ -3339,7 +3366,7 @@ command_known:
 	 * Pick up output parameters. Special case some of the readbacks
 	 * for the dual port SCSI cards.
 	 */
-	if (IS_12X0(isp)) {
+	if (IS_DUALBUS(isp)) {
 		switch (opcode) {
 		case MBOX_GET_RETRY_COUNT:
 		case MBOX_SET_RETRY_COUNT:
@@ -3514,7 +3541,7 @@ isp_dumpregs(isp, msg)
 		PRINTF("    sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n",
 			ISP_READ(isp, SXP_INTERRUPT),
 			ISP_READ(isp, SXP_GROSS_ERR),
-			ISP_READ(isp, SXP_PINS_CONTROL));
+			ISP_READ(isp, SXP_PINS_CTRL));
 		ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE);
 	}
 	PRINTF("    mbox regs: %x %x %x %x %x\n",
@@ -3755,14 +3782,14 @@ isp_setdfltparm(isp, channel)
 		IDPRINTF(2, ("could not GET ACT NEG STATE\n"));
 		sdp_chan0->isp_req_ack_active_neg = 1;
 		sdp_chan0->isp_data_line_active_neg = 1;
-		if (IS_12X0(isp)) {
+		if (IS_DUALBUS(isp)) {
 			sdp_chan1->isp_req_ack_active_neg = 1;
 			sdp_chan1->isp_data_line_active_neg = 1;
 		}
 	} else {
 		sdp_chan0->isp_req_ack_active_neg = (mbs.param[1] >> 4) & 0x1;
 		sdp_chan0->isp_data_line_active_neg = (mbs.param[1] >> 5) & 0x1;
-		if (IS_12X0(isp)) {
+		if (IS_DUALBUS(isp)) {
 			sdp_chan1->isp_req_ack_active_neg =
 			    (mbs.param[2] >> 4) & 0x1;
 			sdp_chan1->isp_data_line_active_neg =
@@ -3787,7 +3814,7 @@ isp_setdfltparm(isp, channel)
 			    ISP_10M_SYNCPARMS >> 8;
 			sdp->isp_devparam[tgt].sync_period =
 			    ISP_10M_SYNCPARMS & 0xff;
-		} else if (IS_1080(isp)) {
+		} else if (IS_ULTRA2(isp)) {
 			sdp->isp_devparam[tgt].sync_offset =
 			    ISP_40M_SYNCPARMS >> 8;
 			sdp->isp_devparam[tgt].sync_period =
@@ -3941,7 +3968,7 @@ isp_read_nvram(isp)
 	if (IS_FC(isp)) {
 		amt = ISP2100_NVRAM_SIZE;
 		minversion = 1;
-	} else if (IS_1080(isp) || IS_12X0(isp)) {
+	} else if (IS_ULTRA2(isp)) {
 		amt = ISP1080_NVRAM_SIZE;
 		minversion = 0;
 	} else {
@@ -3981,10 +4008,10 @@ isp_read_nvram(isp)
 		return (-1);
 	}
 
-	if (IS_1080(isp) || IS_12X0(isp)) {
+	if (IS_ULTRA2(isp)) {
 		int bus;
 		sdparam *sdp = (sdparam *) isp->isp_param;
-		for (bus = 0; bus < (IS_1080(isp)? 1 : 2); bus++, sdp++) {
+		for (bus = 0; bus < (IS_DUALBUS(isp)? 2 : 1); bus++, sdp++) {
 			sdp->isp_fifo_threshold = 
 			    ISP1080_NVRAM_FIFO_THRESHOLD(nvram_data);
 
@@ -4344,7 +4371,7 @@ isp_rdnvram_word(isp, wo, rp)
 		wo &= ((ISP2100_NVRAM_SIZE >> 1) - 1);
 		rqst = (ISP_NVRAM_READ << 8) | wo;
 		cbits = 10;
-	} else if (IS_1080(isp) || IS_12X0(isp)) {
+	} else if (IS_ULTRA2(isp)) {
 		wo &= ((ISP1080_NVRAM_SIZE >> 1) - 1);
 		rqst = (ISP_NVRAM_READ << 8) | wo;
 		cbits = 10;
diff --git a/sys/dev/isp/isp_freebsd.c b/sys/dev/isp/isp_freebsd.c
index 92fbd4e1b3a7..f147ec3f63c6 100644
--- a/sys/dev/isp/isp_freebsd.c
+++ b/sys/dev/isp/isp_freebsd.c
@@ -40,7 +40,9 @@ static void isp_action(struct cam_sim *, union ccb *);
 static void isp_relsim(void *);
 
 /* #define	ISP_LUN0_ONLY	1 */
-#ifdef	CAMDEBUG
+#ifdef	DEBUG
+int isp_debug = 2;
+#elif defined(CAMDEBUG) || defined(DIAGNOSTIC)
 int isp_debug = 1;
 #else
 int isp_debug = 0;
@@ -103,7 +105,7 @@ isp_attach(struct ispsoftc *isp)
 	/*
 	 * If we have a second channel, construct SIM entry for that.
 	 */
-	if (IS_12X0(isp)) {
+	if (IS_DUALBUS(isp)) {
 		sim = cam_sim_alloc(isp_action, isp_poll, "isp", isp,
 		    isp->isp_unit, 1, isp->isp_maxcmds, devq);
 		if (sim == NULL) {
diff --git a/sys/dev/isp/isp_freebsd.h b/sys/dev/isp/isp_freebsd.h
index e6118fe47e1a..46b11289f843 100644
--- a/sys/dev/isp/isp_freebsd.h
+++ b/sys/dev/isp/isp_freebsd.h
@@ -212,7 +212,7 @@ extern void isp_uninit(struct ispsoftc *);
 
 #define	IDPRINTF(lev, x)	if (isp->isp_dblev >= (u_int8_t) lev) printf x
 #define	PRINTF			printf
-#define	CFGPRINTF		if (bootverbose || DFLT_DBLEVEL > 0) printf
+#define	CFGPRINTF		if (bootverbose || DFLT_DBLEVEL > 1) printf
 
 #define	SYS_DELAY(x)	DELAY(x)
 
diff --git a/sys/dev/isp/isp_pci.c b/sys/dev/isp/isp_pci.c
index 3c6b1fd9bdb8..3b88a840a970 100644
--- a/sys/dev/isp/isp_pci.c
+++ b/sys/dev/isp/isp_pci.c
@@ -204,6 +204,10 @@ static struct ispmdvec mdvec_2200 = {
 #define	PCI_PRODUCT_QLOGIC_ISP1240	0x1240
 #endif
 
+#ifndef	PCI_PRODUCT_QLOGIC_ISP1280
+#define	PCI_PRODUCT_QLOGIC_ISP1280	0x1280
+#endif
+
 #ifndef	PCI_PRODUCT_QLOGIC_ISP2100
 #define	PCI_PRODUCT_QLOGIC_ISP2100	0x2100
 #endif
@@ -220,6 +224,9 @@ static struct ispmdvec mdvec_2200 = {
 #define	PCI_QLOGIC_ISP1240	\
 	((PCI_PRODUCT_QLOGIC_ISP1240 << 16) | PCI_VENDOR_QLOGIC)
 
+#define	PCI_QLOGIC_ISP1280	\
+	((PCI_PRODUCT_QLOGIC_ISP1280 << 16) | PCI_VENDOR_QLOGIC)
+
 #define	PCI_QLOGIC_ISP2100	\
 	((PCI_PRODUCT_QLOGIC_ISP2100 << 16) | PCI_VENDOR_QLOGIC)
 
@@ -287,6 +294,9 @@ isp_pci_probe(pcici_t tag, pcidi_t type)
 	case PCI_QLOGIC_ISP1240:
 		x = "Qlogic ISP 1240 PCI SCSI Adapter";
 		break;
+	case PCI_QLOGIC_ISP1280:
+		x = "Qlogic ISP 1280 PCI SCSI Adapter";
+		break;
 #endif
 #ifndef	ISP_DISABLE_2100_SUPPORT
 	case PCI_QLOGIC_ISP2100:
@@ -443,7 +453,14 @@ isp_pci_attach(pcici_t cfid, int unit)
 	}
 	if (data == PCI_QLOGIC_ISP1240) {
 		mdvp = &mdvec_1080;
-		basetype = ISP_HA_SCSI_12X0;
+		basetype = ISP_HA_SCSI_1240;
+		psize = 2 * sizeof (sdparam);
+		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
+		    ISP1080_DMA_REGS_OFF;
+	}
+	if (data == PCI_QLOGIC_ISP1280) {
+		mdvp = &mdvec_1080;
+		basetype = ISP_HA_SCSI_1280;
 		psize = 2 * sizeof (sdparam);
 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
 		    ISP1080_DMA_REGS_OFF;
@@ -709,16 +726,23 @@ isp_pci_rd_reg_1080(isp, regoff)
 	struct ispsoftc *isp;
 	int regoff;
 {
-	u_int16_t rv;
+	u_int16_t rv, oc = 0;
 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
-	int offset, oc = 0;
+	int offset;
 
-	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
+	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
+	    (regoff & _BLK_REG_MASK) == (SXP_BLOCK|SXP_BANK1_SELECT)) {
+		u_int16_t tc;
 		/*
 		 * We will assume that someone has paused the RISC processor.
 		 */
 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
-		isp_pci_wr_reg(isp, BIU_CONF1, oc | BIU_PCI1080_CONF1_SXP);
+		tc = oc & ~BIU_PCI1080_CONF1_DMA;
+		if (regoff & SXP_BANK1_SELECT)
+			tc |= BIU_PCI1080_CONF1_SXP1;
+		else
+			tc |= BIU_PCI1080_CONF1_SXP0;
+		isp_pci_wr_reg(isp, BIU_CONF1, tc);
 	} else if ((regoff & _BLK_REG_MASK) == DMA_BLOCK) {
 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
 		isp_pci_wr_reg(isp, BIU_CONF1, oc | BIU_PCI1080_CONF1_DMA);
@@ -726,8 +750,7 @@ isp_pci_rd_reg_1080(isp, regoff)
 	offset = pcs->pci_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
 	offset += (regoff & 0xff);
 	rv = bus_space_read_2(pcs->pci_st, pcs->pci_sh, offset);
-	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
-	    ((regoff & _BLK_REG_MASK) == DMA_BLOCK)) {
+	if (oc) {
 		isp_pci_wr_reg(isp, BIU_CONF1, oc);
 	}
 	return (rv);
@@ -742,12 +765,19 @@ isp_pci_wr_reg_1080(isp, regoff, val)
 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
 	int offset, oc = 0;
 
-	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
+	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
+	    (regoff & _BLK_REG_MASK) == (SXP_BLOCK|SXP_BANK1_SELECT)) {
+		u_int16_t tc;
 		/*
 		 * We will assume that someone has paused the RISC processor.
 		 */
 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
-		isp_pci_wr_reg(isp, BIU_CONF1, oc | BIU_PCI1080_CONF1_SXP);
+		tc = oc & ~BIU_PCI1080_CONF1_DMA;
+		if (regoff & SXP_BANK1_SELECT)
+			tc |= BIU_PCI1080_CONF1_SXP1;
+		else
+			tc |= BIU_PCI1080_CONF1_SXP0;
+		isp_pci_wr_reg(isp, BIU_CONF1, tc);
 	} else if ((regoff & _BLK_REG_MASK) == DMA_BLOCK) {
 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
 		isp_pci_wr_reg(isp, BIU_CONF1, oc | BIU_PCI1080_CONF1_DMA);
@@ -755,8 +785,7 @@ isp_pci_wr_reg_1080(isp, regoff, val)
 	offset = pcs->pci_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
 	offset += (regoff & 0xff);
 	bus_space_write_2(pcs->pci_st, pcs->pci_sh, offset, val);
-	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
-	    ((regoff & _BLK_REG_MASK) == DMA_BLOCK)) {
+	if (oc) {
 		isp_pci_wr_reg(isp, BIU_CONF1, oc);
 	}
 }
@@ -839,7 +868,7 @@ isp_pci_mbxdma(struct ispsoftc *isp)
 		return (1);
 	}
 
-	if (IS_FC(isp) || IS_1080(isp) || IS_12X0(isp))
+	if (IS_FC(isp) || IS_ULTRA2(isp))
 		lim = BUS_SPACE_MAXADDR + 1;
 	else
 		lim = BUS_SPACE_MAXADDR_24BIT + 1;
diff --git a/sys/dev/isp/ispreg.h b/sys/dev/isp/ispreg.h
index 18791fffae5f..777e43c6079d 100644
--- a/sys/dev/isp/ispreg.h
+++ b/sys/dev/isp/ispreg.h
@@ -97,47 +97,47 @@
  * Bus Interface Block Register Offsets
  */
 
-#define	BIU_ID_LO	BIU_BLOCK+0x0	/* R  : Bus ID, Low */
-#define		BIU2100_FLASH_ADDR	BIU_BLOCK+0x0
-#define	BIU_ID_HI	BIU_BLOCK+0x2	/* R  : Bus ID, High */
-#define		BIU2100_FLASH_DATA	BIU_BLOCK+0x2
-#define	BIU_CONF0	BIU_BLOCK+0x4	/* R  : Bus Configuration #0 */
-#define	BIU_CONF1	BIU_BLOCK+0x6	/* R  : Bus Configuration #1 */
-#define		BIU2100_CSR		BIU_BLOCK+0x6
-#define	BIU_ICR		BIU_BLOCK+0x8	/* RW : Bus Interface Ctrl */
-#define	BIU_ISR		BIU_BLOCK+0xA	/* R  : Bus Interface Status */
-#define	BIU_SEMA	BIU_BLOCK+0xC	/* RW : Bus Semaphore */
-#define	BIU_NVRAM	BIU_BLOCK+0xE	/* RW : Bus NVRAM */
-#define	DFIFO_COMMAND	BIU_BLOCK+0x60	/* RW : Command FIFO Port */
+#define	BIU_ID_LO	(BIU_BLOCK+0x0)		/* R  : Bus ID, Low */
+#define		BIU2100_FLASH_ADDR	(BIU_BLOCK+0x0)
+#define	BIU_ID_HI	(BIU_BLOCK+0x2)		/* R  : Bus ID, High */
+#define		BIU2100_FLASH_DATA	(BIU_BLOCK+0x2)
+#define	BIU_CONF0	(BIU_BLOCK+0x4)		/* R  : Bus Configuration #0 */
+#define	BIU_CONF1	(BIU_BLOCK+0x6)		/* R  : Bus Configuration #1 */
+#define		BIU2100_CSR		(BIU_BLOCK+0x6)
+#define	BIU_ICR		(BIU_BLOCK+0x8)		/* RW : Bus Interface Ctrl */
+#define	BIU_ISR		(BIU_BLOCK+0xA)		/* R  : Bus Interface Status */
+#define	BIU_SEMA	(BIU_BLOCK+0xC)		/* RW : Bus Semaphore */
+#define	BIU_NVRAM	(BIU_BLOCK+0xE)		/* RW : Bus NVRAM */
+#define	DFIFO_COMMAND	(BIU_BLOCK+0x60)	/* RW : Command FIFO Port */
 #define		RDMA2100_CONTROL	DFIFO_COMMAND
-#define	DFIFO_DATA	BIU_BLOCK+0x62	/* RW : Data FIFO Port */
+#define	DFIFO_DATA	(BIU_BLOCK+0x62)	/* RW : Data FIFO Port */
 
 /*
  * Putzed DMA register layouts.
  */
-#define	CDMA_CONF	DMA_BLOCK+0x20	/* RW*: DMA Configuration */
+#define	CDMA_CONF	(DMA_BLOCK+0x20)	/* RW*: DMA Configuration */
 #define		CDMA2100_CONTROL	CDMA_CONF
-#define	CDMA_CONTROL	DMA_BLOCK+0x22	/* RW*: DMA Control */
-#define	CDMA_STATUS 	DMA_BLOCK+0x24	/* R  : DMA Status */
-#define	CDMA_FIFO_STS	DMA_BLOCK+0x26	/* R  : DMA FIFO Status */
-#define	CDMA_COUNT	DMA_BLOCK+0x28	/* RW*: DMA Transfer Count */
-#define	CDMA_ADDR0	DMA_BLOCK+0x2C	/* RW*: DMA Address, Word 0 */
-#define	CDMA_ADDR1	DMA_BLOCK+0x2E	/* RW*: DMA Address, Word 1 */
-#define	CDMA_ADDR2	DMA_BLOCK+0x30	/* RW*: DMA Address, Word 2 */
-#define	CDMA_ADDR3	DMA_BLOCK+0x32	/* RW*: DMA Address, Word 3 */
+#define	CDMA_CONTROL	(DMA_BLOCK+0x22)	/* RW*: DMA Control */
+#define	CDMA_STATUS 	(DMA_BLOCK+0x24)	/* R  : DMA Status */
+#define	CDMA_FIFO_STS	(DMA_BLOCK+0x26)	/* R  : DMA FIFO Status */
+#define	CDMA_COUNT	(DMA_BLOCK+0x28)	/* RW*: DMA Transfer Count */
+#define	CDMA_ADDR0	(DMA_BLOCK+0x2C)	/* RW*: DMA Address, Word 0 */
+#define	CDMA_ADDR1	(DMA_BLOCK+0x2E)	/* RW*: DMA Address, Word 1 */
+#define	CDMA_ADDR2	(DMA_BLOCK+0x30)	/* RW*: DMA Address, Word 2 */
+#define	CDMA_ADDR3	(DMA_BLOCK+0x32)	/* RW*: DMA Address, Word 3 */
 
-#define	DDMA_CONF	DMA_BLOCK+0x40	/* RW*: DMA Configuration */
+#define	DDMA_CONF	(DMA_BLOCK+0x40)	/* RW*: DMA Configuration */
 #define		TDMA2100_CONTROL	DDMA_CONF
-#define	DDMA_CONTROL	DMA_BLOCK+0x42	/* RW*: DMA Control */
-#define	DDMA_STATUS	DMA_BLOCK+0x44	/* R  : DMA Status */
-#define	DDMA_FIFO_STS	DMA_BLOCK+0x46	/* R  : DMA FIFO Status */
-#define	DDMA_COUNT_LO	DMA_BLOCK+0x48	/* RW*: DMA Xfer Count, Low */
-#define	DDMA_COUNT_HI	DMA_BLOCK+0x4A	/* RW*: DMA Xfer Count, High */
-#define	DDMA_ADDR0	DMA_BLOCK+0x4C	/* RW*: DMA Address, Word 0 */
-#define	DDMA_ADDR1	DMA_BLOCK+0x4E	/* RW*: DMA Address, Word 1 */
+#define	DDMA_CONTROL	(DMA_BLOCK+0x42)	/* RW*: DMA Control */
+#define	DDMA_STATUS	(DMA_BLOCK+0x44)	/* R  : DMA Status */
+#define	DDMA_FIFO_STS	(DMA_BLOCK+0x46)	/* R  : DMA FIFO Status */
+#define	DDMA_COUNT_LO	(DMA_BLOCK+0x48)	/* RW*: DMA Xfer Count, Low */
+#define	DDMA_COUNT_HI	(DMA_BLOCK+0x4A)	/* RW*: DMA Xfer Count, High */
+#define	DDMA_ADDR0	(DMA_BLOCK+0x4C)	/* RW*: DMA Address, Word 0 */
+#define	DDMA_ADDR1	(DMA_BLOCK+0x4E)	/* RW*: DMA Address, Word 1 */
 /* these are for the 1040A cards */
-#define	DDMA_ADDR2	DMA_BLOCK+0x50	/* RW*: DMA Address, Word 2 */
-#define	DDMA_ADDR3	DMA_BLOCK+0x52	/* RW*: DMA Address, Word 3 */
+#define	DDMA_ADDR2	(DMA_BLOCK+0x50)	/* RW*: DMA Address, Word 2 */
+#define	DDMA_ADDR3	(DMA_BLOCK+0x52)	/* RW*: DMA Address, Word 3 */
 
 
 /*
@@ -162,7 +162,8 @@
 #define	BIU_SBUS_CONF1_BURST8		0x0008 	/* Enable 8-byte  bursts */
 #define	BIU_PCI_CONF1_SXP		0x0008	/* SXP register select */
 
-#define	BIU_PCI1080_CONF1_SXP		0x0100	/* SXP bank select */
+#define	BIU_PCI1080_CONF1_SXP0		0x0100	/* SXP bank #1 select */
+#define	BIU_PCI1080_CONF1_SXP1		0x0200	/* SXP bank #2 select */
 #define	BIU_PCI1080_CONF1_DMA		0x0300	/* DMA bank select */
 
 /* ISP2100 Bus Control/Status Register */
@@ -318,23 +319,23 @@
  * Mailbox Block Register Offsets
  */
 
-#define	INMAILBOX0	MBOX_BLOCK+0x0
-#define	INMAILBOX1	MBOX_BLOCK+0x2
-#define	INMAILBOX2	MBOX_BLOCK+0x4
-#define	INMAILBOX3	MBOX_BLOCK+0x6
-#define	INMAILBOX4	MBOX_BLOCK+0x8
-#define	INMAILBOX5	MBOX_BLOCK+0xA
-#define	INMAILBOX6	MBOX_BLOCK+0xC
-#define	INMAILBOX7	MBOX_BLOCK+0xE
+#define	INMAILBOX0	(MBOX_BLOCK+0x0)
+#define	INMAILBOX1	(MBOX_BLOCK+0x2)
+#define	INMAILBOX2	(MBOX_BLOCK+0x4)
+#define	INMAILBOX3	(MBOX_BLOCK+0x6)
+#define	INMAILBOX4	(MBOX_BLOCK+0x8)
+#define	INMAILBOX5	(MBOX_BLOCK+0xA)
+#define	INMAILBOX6	(MBOX_BLOCK+0xC)
+#define	INMAILBOX7	(MBOX_BLOCK+0xE)
 
-#define	OUTMAILBOX0	MBOX_BLOCK+0x0
-#define	OUTMAILBOX1	MBOX_BLOCK+0x2
-#define	OUTMAILBOX2	MBOX_BLOCK+0x4
-#define	OUTMAILBOX3	MBOX_BLOCK+0x6
-#define	OUTMAILBOX4	MBOX_BLOCK+0x8
-#define	OUTMAILBOX5	MBOX_BLOCK+0xA
-#define	OUTMAILBOX6	MBOX_BLOCK+0xC
-#define	OUTMAILBOX7	MBOX_BLOCK+0xE
+#define	OUTMAILBOX0	(MBOX_BLOCK+0x0)
+#define	OUTMAILBOX1	(MBOX_BLOCK+0x2)
+#define	OUTMAILBOX2	(MBOX_BLOCK+0x4)
+#define	OUTMAILBOX3	(MBOX_BLOCK+0x6)
+#define	OUTMAILBOX4	(MBOX_BLOCK+0x8)
+#define	OUTMAILBOX5	(MBOX_BLOCK+0xA)
+#define	OUTMAILBOX6	(MBOX_BLOCK+0xC)
+#define	OUTMAILBOX7	(MBOX_BLOCK+0xE)
 
 #define	OMBOX_OFFN(n)	(MBOX_BLOCK + (n * 2))
 #define	NMBOX(isp)	\
@@ -344,45 +345,48 @@
 /*
  * SXP Block Register Offsets
  */
-#define	SXP_PART_ID		SXP_BLOCK+0x0	/* R  : Part ID Code */
-#define	SXP_CONFIG1		SXP_BLOCK+0x2	/* RW*: Configuration Reg #1 */
-#define	SXP_CONFIG2		SXP_BLOCK+0x4	/* RW*: Configuration Reg #2 */
-#define	SXP_CONFIG3		SXP_BLOCK+0x6	/* RW*: Configuration Reg #2 */
-#define	SXP_INSTRUCTION		SXP_BLOCK+0xC	/* RW*: Instruction Pointer */
-#define	SXP_RETURN_ADDR		SXP_BLOCK+0x10	/* RW*: Return Address */
-#define	SXP_COMMAND		SXP_BLOCK+0x14	/* RW*: Command */
-#define	SXP_INTERRUPT		SXP_BLOCK+0x18	/* R  : Interrupt */
-#define	SXP_SEQUENCE		SXP_BLOCK+0x1C	/* RW*: Sequence */
-#define	SXP_GROSS_ERR		SXP_BLOCK+0x1E	/* R  : Gross Error */
-#define	SXP_EXCEPTION		SXP_BLOCK+0x20	/* RW*: Exception Enable */
-#define	SXP_OVERRIDE		SXP_BLOCK+0x24	/* RW*: Override */
-#define	SXP_LITERAL_BASE	SXP_BLOCK+0x28	/* RW*: Literal Base */
-#define	SXP_USER_FLAGS		SXP_BLOCK+0x2C	/* RW*: User Flags */
-#define	SXP_USER_EXCEPT		SXP_BLOCK+0x30	/* RW*: User Exception */
-#define	SXP_BREAKPOINT		SXP_BLOCK+0x34	/* RW*: Breakpoint */
-#define	SXP_SCSI_ID		SXP_BLOCK+0x40	/* RW*: SCSI ID */
-#define	SXP_DEV_CONFIG1		SXP_BLOCK+0x42	/* RW*: Device Config Reg #1 */
-#define	SXP_DEV_CONFIG2		SXP_BLOCK+0x44	/* RW*: Device Config Reg #2 */
-#define	SXP_PHASE_POINTER	SXP_BLOCK+0x48	/* RW*: SCSI Phase Pointer */
-#define	SXP_BUF_POINTER		SXP_BLOCK+0x4C	/* RW*: SCSI Buffer Pointer */
-#define	SXP_BUF_COUNTER		SXP_BLOCK+0x50	/* RW*: SCSI Buffer Counter */
-#define	SXP_BUFFER		SXP_BLOCK+0x52	/* RW*: SCSI Buffer */
-#define	SXP_BUF_BYTE		SXP_BLOCK+0x54	/* RW*: SCSI Buffer Byte */
-#define	SXP_BUF_WORD		SXP_BLOCK+0x56	/* RW*: SCSI Buffer Word */
-#define	SXP_BUF_WORD_TRAN	SXP_BLOCK+0x58	/* RW*: SCSI Buffer Wd xlate */
-#define	SXP_FIFO		SXP_BLOCK+0x5A	/* RW*: SCSI FIFO */
-#define	SXP_FIFO_STATUS		SXP_BLOCK+0x5C	/* RW*: SCSI FIFO Status */
-#define	SXP_FIFO_TOP		SXP_BLOCK+0x5E	/* RW*: SCSI FIFO Top Resid */
-#define	SXP_FIFO_BOTTOM		SXP_BLOCK+0x60	/* RW*: SCSI FIFO Bot Resid */
-#define	SXP_TRAN_REG		SXP_BLOCK+0x64	/* RW*: SCSI Transferr Reg */
-#define	SXP_TRAN_COUNT_LO	SXP_BLOCK+0x68	/* RW*: SCSI Trans Count */
-#define	SXP_TRAN_COUNT_HI	SXP_BLOCK+0x6A	/* RW*: SCSI Trans Count */
-#define	SXP_TRAN_COUNTER_LO	SXP_BLOCK+0x6C	/* RW*: SCSI Trans Counter */
-#define	SXP_TRAN_COUNTER_HI	SXP_BLOCK+0x6E	/* RW*: SCSI Trans Counter */
-#define	SXP_ARB_DATA		SXP_BLOCK+0x70	/* R  : SCSI Arb Data */
-#define	SXP_PINS_CONTROL	SXP_BLOCK+0x72	/* RW*: SCSI Control Pins */
-#define	SXP_PINS_DATA		SXP_BLOCK+0x74	/* RW*: SCSI Data Pins */
-#define	SXP_PINS_DIFF		SXP_BLOCK+0x76	/* RW*: SCSI Diff Pins */
+#define	SXP_PART_ID	(SXP_BLOCK+0x0)		/* R  : Part ID Code */
+#define	SXP_CONFIG1	(SXP_BLOCK+0x2)		/* RW*: Configuration Reg #1 */
+#define	SXP_CONFIG2	(SXP_BLOCK+0x4)		/* RW*: Configuration Reg #2 */
+#define	SXP_CONFIG3	(SXP_BLOCK+0x6)		/* RW*: Configuration Reg #2 */
+#define	SXP_INSTRUCTION	(SXP_BLOCK+0xC)		/* RW*: Instruction Pointer */
+#define	SXP_RETURN_ADDR	(SXP_BLOCK+0x10)	/* RW*: Return Address */
+#define	SXP_COMMAND	(SXP_BLOCK+0x14)	/* RW*: Command */
+#define	SXP_INTERRUPT	(SXP_BLOCK+0x18)	/* R  : Interrupt */
+#define	SXP_SEQUENCE	(SXP_BLOCK+0x1C)	/* RW*: Sequence */
+#define	SXP_GROSS_ERR	(SXP_BLOCK+0x1E)	/* R  : Gross Error */
+#define	SXP_EXCEPTION	(SXP_BLOCK+0x20)	/* RW*: Exception Enable */
+#define	SXP_OVERRIDE	(SXP_BLOCK+0x24)	/* RW*: Override */
+#define	SXP_LIT_BASE	(SXP_BLOCK+0x28)	/* RW*: Literal Base */
+#define	SXP_USER_FLAGS	(SXP_BLOCK+0x2C)	/* RW*: User Flags */
+#define	SXP_USER_EXCEPT	(SXP_BLOCK+0x30)	/* RW*: User Exception */
+#define	SXP_BREAKPOINT	(SXP_BLOCK+0x34)	/* RW*: Breakpoint */
+#define	SXP_SCSI_ID	(SXP_BLOCK+0x40)	/* RW*: SCSI ID */
+#define	SXP_DEV_CONFIG1	(SXP_BLOCK+0x42)	/* RW*: Device Config Reg #1 */
+#define	SXP_DEV_CONFIG2	(SXP_BLOCK+0x44)	/* RW*: Device Config Reg #2 */
+#define	SXP_PHASE_PTR	(SXP_BLOCK+0x48)	/* RW*: SCSI Phase Pointer */
+#define	SXP_BUF_PTR	(SXP_BLOCK+0x4C)	/* RW*: SCSI Buffer Pointer */
+#define	SXP_BUF_CTR	(SXP_BLOCK+0x50)	/* RW*: SCSI Buffer Counter */
+#define	SXP_BUFFER	(SXP_BLOCK+0x52)	/* RW*: SCSI Buffer */
+#define	SXP_BUF_BYTE	(SXP_BLOCK+0x54)	/* RW*: SCSI Buffer Byte */
+#define	SXP_BUF_WD	(SXP_BLOCK+0x56)	/* RW*: SCSI Buffer Word */
+#define	SXP_BUF_WD_TRAN	(SXP_BLOCK+0x58)	/* RW*: SCSI Buffer Wd xlate */
+#define	SXP_FIFO	(SXP_BLOCK+0x5A)	/* RW*: SCSI FIFO */
+#define	SXP_FIFO_STATUS	(SXP_BLOCK+0x5C)	/* RW*: SCSI FIFO Status */
+#define	SXP_FIFO_TOP	(SXP_BLOCK+0x5E)	/* RW*: SCSI FIFO Top Resid */
+#define	SXP_FIFO_BOTTOM	(SXP_BLOCK+0x60)	/* RW*: SCSI FIFO Bot Resid */
+#define	SXP_TRAN_REG	(SXP_BLOCK+0x64)	/* RW*: SCSI Transferr Reg */
+#define	SXP_TRAN_CNT_LO	(SXP_BLOCK+0x68)	/* RW*: SCSI Trans Count */
+#define	SXP_TRAN_CNT_HI	(SXP_BLOCK+0x6A)	/* RW*: SCSI Trans Count */
+#define	SXP_TRAN_CTR_LO	(SXP_BLOCK+0x6C)	/* RW*: SCSI Trans Counter */
+#define	SXP_TRAN_CTR_HI	(SXP_BLOCK+0x6E)	/* RW*: SCSI Trans Counter */
+#define	SXP_ARB_DATA	(SXP_BLOCK+0x70)	/* R  : SCSI Arb Data */
+#define	SXP_PINS_CTRL	(SXP_BLOCK+0x72)	/* RW*: SCSI Control Pins */
+#define	SXP_PINS_DATA	(SXP_BLOCK+0x74)	/* RW*: SCSI Data Pins */
+#define	SXP_PINS_DIFF	(SXP_BLOCK+0x76)	/* RW*: SCSI Diff Pins */
+
+/* for 1080/1280/1240 only */
+#define	SXP_BANK1_SELECT	0x100
 
 
 /* SXP CONF1 REGISTER */
@@ -511,7 +515,7 @@
 #define	SXP_PINS_DIFF_TARGET		0x0002	/* Enable SXP target mode */
 #define	SXP_PINS_DIFF_INITIATOR		0x0001	/* Enable SXP initiator mode */
 
-/* 1080 only */
+/* Ultra2 only */
 #define	SXP_PINS_LVD_MODE		0x1000
 #define	SXP_PINS_HVD_MODE		0x0800
 #define	SXP_PINS_SE_MODE		0x0400
diff --git a/sys/dev/isp/ispvar.h b/sys/dev/isp/ispvar.h
index 60a6d972975d..3da0199d98db 100644
--- a/sys/dev/isp/ispvar.h
+++ b/sys/dev/isp/ispvar.h
@@ -390,15 +390,22 @@ struct ispsoftc {
 #define	ISP_HA_SCSI_1040A	0x5
 #define	ISP_HA_SCSI_1040B	0x6
 #define	ISP_HA_SCSI_1040C	0x7
-#define	ISP_HA_SCSI_1080	0xd
-#define	ISP_HA_SCSI_12X0	0xe
+#define	ISP_HA_SCSI_1240	0x8
+#define	ISP_HA_SCSI_1080	0x9
+#define	ISP_HA_SCSI_1280	0xa
 #define	ISP_HA_FC		0xf0
 #define	ISP_HA_FC_2100		0x10
 #define	ISP_HA_FC_2200		0x20
 
 #define	IS_SCSI(isp)	(isp->isp_type & ISP_HA_SCSI)
+#define	IS_1240(isp)	(isp->isp_type == ISP_HA_SCSI_1240)
 #define	IS_1080(isp)	(isp->isp_type == ISP_HA_SCSI_1080)
-#define	IS_12X0(isp)	(isp->isp_type == ISP_HA_SCSI_12X0)
+#define	IS_1280(isp)	(isp->isp_type == ISP_HA_SCSI_1280)
+#define	IS_12X0(isp)	\
+	(isp->isp_type == ISP_HA_SCSI_1240 || isp->isp_type == ISP_HA_SCSI_1280)
+#define	IS_DUALBUS(isp)	IS_12X0(isp)
+#define	IS_ULTRA2(isp)	\
+	(isp->isp_type == ISP_HA_SCSI_1080 || isp->isp_type == ISP_HA_SCSI_1280)
 #define	IS_FC(isp)	(isp->isp_type & ISP_HA_FC)
 
 /*
diff --git a/sys/pci/isp_pci.c b/sys/pci/isp_pci.c
index 3c6b1fd9bdb8..3b88a840a970 100644
--- a/sys/pci/isp_pci.c
+++ b/sys/pci/isp_pci.c
@@ -204,6 +204,10 @@ static struct ispmdvec mdvec_2200 = {
 #define	PCI_PRODUCT_QLOGIC_ISP1240	0x1240
 #endif
 
+#ifndef	PCI_PRODUCT_QLOGIC_ISP1280
+#define	PCI_PRODUCT_QLOGIC_ISP1280	0x1280
+#endif
+
 #ifndef	PCI_PRODUCT_QLOGIC_ISP2100
 #define	PCI_PRODUCT_QLOGIC_ISP2100	0x2100
 #endif
@@ -220,6 +224,9 @@ static struct ispmdvec mdvec_2200 = {
 #define	PCI_QLOGIC_ISP1240	\
 	((PCI_PRODUCT_QLOGIC_ISP1240 << 16) | PCI_VENDOR_QLOGIC)
 
+#define	PCI_QLOGIC_ISP1280	\
+	((PCI_PRODUCT_QLOGIC_ISP1280 << 16) | PCI_VENDOR_QLOGIC)
+
 #define	PCI_QLOGIC_ISP2100	\
 	((PCI_PRODUCT_QLOGIC_ISP2100 << 16) | PCI_VENDOR_QLOGIC)
 
@@ -287,6 +294,9 @@ isp_pci_probe(pcici_t tag, pcidi_t type)
 	case PCI_QLOGIC_ISP1240:
 		x = "Qlogic ISP 1240 PCI SCSI Adapter";
 		break;
+	case PCI_QLOGIC_ISP1280:
+		x = "Qlogic ISP 1280 PCI SCSI Adapter";
+		break;
 #endif
 #ifndef	ISP_DISABLE_2100_SUPPORT
 	case PCI_QLOGIC_ISP2100:
@@ -443,7 +453,14 @@ isp_pci_attach(pcici_t cfid, int unit)
 	}
 	if (data == PCI_QLOGIC_ISP1240) {
 		mdvp = &mdvec_1080;
-		basetype = ISP_HA_SCSI_12X0;
+		basetype = ISP_HA_SCSI_1240;
+		psize = 2 * sizeof (sdparam);
+		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
+		    ISP1080_DMA_REGS_OFF;
+	}
+	if (data == PCI_QLOGIC_ISP1280) {
+		mdvp = &mdvec_1080;
+		basetype = ISP_HA_SCSI_1280;
 		psize = 2 * sizeof (sdparam);
 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
 		    ISP1080_DMA_REGS_OFF;
@@ -709,16 +726,23 @@ isp_pci_rd_reg_1080(isp, regoff)
 	struct ispsoftc *isp;
 	int regoff;
 {
-	u_int16_t rv;
+	u_int16_t rv, oc = 0;
 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
-	int offset, oc = 0;
+	int offset;
 
-	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
+	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
+	    (regoff & _BLK_REG_MASK) == (SXP_BLOCK|SXP_BANK1_SELECT)) {
+		u_int16_t tc;
 		/*
 		 * We will assume that someone has paused the RISC processor.
 		 */
 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
-		isp_pci_wr_reg(isp, BIU_CONF1, oc | BIU_PCI1080_CONF1_SXP);
+		tc = oc & ~BIU_PCI1080_CONF1_DMA;
+		if (regoff & SXP_BANK1_SELECT)
+			tc |= BIU_PCI1080_CONF1_SXP1;
+		else
+			tc |= BIU_PCI1080_CONF1_SXP0;
+		isp_pci_wr_reg(isp, BIU_CONF1, tc);
 	} else if ((regoff & _BLK_REG_MASK) == DMA_BLOCK) {
 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
 		isp_pci_wr_reg(isp, BIU_CONF1, oc | BIU_PCI1080_CONF1_DMA);
@@ -726,8 +750,7 @@ isp_pci_rd_reg_1080(isp, regoff)
 	offset = pcs->pci_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
 	offset += (regoff & 0xff);
 	rv = bus_space_read_2(pcs->pci_st, pcs->pci_sh, offset);
-	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
-	    ((regoff & _BLK_REG_MASK) == DMA_BLOCK)) {
+	if (oc) {
 		isp_pci_wr_reg(isp, BIU_CONF1, oc);
 	}
 	return (rv);
@@ -742,12 +765,19 @@ isp_pci_wr_reg_1080(isp, regoff, val)
 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
 	int offset, oc = 0;
 
-	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
+	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
+	    (regoff & _BLK_REG_MASK) == (SXP_BLOCK|SXP_BANK1_SELECT)) {
+		u_int16_t tc;
 		/*
 		 * We will assume that someone has paused the RISC processor.
 		 */
 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
-		isp_pci_wr_reg(isp, BIU_CONF1, oc | BIU_PCI1080_CONF1_SXP);
+		tc = oc & ~BIU_PCI1080_CONF1_DMA;
+		if (regoff & SXP_BANK1_SELECT)
+			tc |= BIU_PCI1080_CONF1_SXP1;
+		else
+			tc |= BIU_PCI1080_CONF1_SXP0;
+		isp_pci_wr_reg(isp, BIU_CONF1, tc);
 	} else if ((regoff & _BLK_REG_MASK) == DMA_BLOCK) {
 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
 		isp_pci_wr_reg(isp, BIU_CONF1, oc | BIU_PCI1080_CONF1_DMA);
@@ -755,8 +785,7 @@ isp_pci_wr_reg_1080(isp, regoff, val)
 	offset = pcs->pci_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
 	offset += (regoff & 0xff);
 	bus_space_write_2(pcs->pci_st, pcs->pci_sh, offset, val);
-	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
-	    ((regoff & _BLK_REG_MASK) == DMA_BLOCK)) {
+	if (oc) {
 		isp_pci_wr_reg(isp, BIU_CONF1, oc);
 	}
 }
@@ -839,7 +868,7 @@ isp_pci_mbxdma(struct ispsoftc *isp)
 		return (1);
 	}
 
-	if (IS_FC(isp) || IS_1080(isp) || IS_12X0(isp))
+	if (IS_FC(isp) || IS_ULTRA2(isp))
 		lim = BUS_SPACE_MAXADDR + 1;
 	else
 		lim = BUS_SPACE_MAXADDR_24BIT + 1;