diff --git a/sys/arch/pmax/tc/ds-tc-conf.c b/sys/arch/pmax/tc/ds-tc-conf.c
index 316554ecdf1d..c3418d6d0717 100644
--- a/sys/arch/pmax/tc/ds-tc-conf.c
+++ b/sys/arch/pmax/tc/ds-tc-conf.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: ds-tc-conf.c,v 1.5 1996/01/03 20:39:16 jonathan Exp $	*/
+/*	$NetBSD: ds-tc-conf.c,v 1.6 1996/01/11 05:59:23 jonathan Exp $	*/
 
 /*
  * Copyright (c) 1995 Jonathan Stone
@@ -11,21 +11,38 @@
  * We can share one configuration-struct table and use two slot-address
  * tables to handle the fact that the turbochannel slot size and base
  * addresses are different on the two machines.
- * (thankfully the IOASIC subslots are all the same size.)
+ * (thankfully, the IOCTL ASIC subslots are all the same size on all
+ * DECstations with IOASICs.) The devices are listed in the order in which
+ *  we should probe and attach them.
  */
 
 #define C(x)	((void *)(u_long)x)
+#if 0
+#define TC_SCSI  "PMAZ-AA "
+#define TC_ETHER "PMAD-AA "
+#else
+#define TC_SCSI NULL
+#define TC_ETHER NULL
+#endif
 
 struct confargs tc3_devs[4] = {
 	/* name	       slot  offset intpri */
-	{ "IOCTL   ",     3,  0x0,   -1,   },  /* offset 0x040000 ?*/
-	{ NULL, 	  2,  0x0,    2,   },
-	{ NULL, 	  1,  0x0,    1,   },
-	{ NULL, 	  0,  0x0,    0,   }
+	{ "IOCTL   ",     3,  0x0,   -1,   },	/* IOCTL asic, builtin */
+	{ NULL, 	  2,  0x0,    2,   },	/* option slot 2 */
+	{ NULL, 	  1,  0x0,    1,   },	/* option slot 1 */
+	{ NULL, 	  0,  0x0,    0,   }	/* option slot 0 */
 
 };
 
-/* 3MAXPLUS slot addreseses */
+/*
+ * The only builtin Turbonchannel device on the kn03 and kmin
+ * is the IOCTL asic, which is mapped into TC slot 3.
+ */
+struct tc_builtin tc_kn03_builtins[] = {
+	{ "IOCTL   ",	3, 0x0, C(3), /*C(3)*/ }
+};
+
+/* 3MAXPLUS TC slot addresses */
 static struct tc_slotdesc tc_kn03_slots [4] = {
        	{ KV(KN03_PHYS_TC_0_START), C(0) },  /* slot0 - tc option slot 0 */
 	{ KV(KN03_PHYS_TC_1_START), C(1) },  /* slot1 - tc option slot 1 */
@@ -53,8 +70,8 @@ struct tc_cpu_desc kn03_tc_desc =
 static struct tc_slotdesc tc_kmin_slots [] = {
        	{ KV(KMIN_PHYS_TC_0_START), C(0) },   /* slot0 - tc option slot 0 */
 	{ KV(KMIN_PHYS_TC_1_START), C(1) },   /* slot1 - tc option slot 1 */
-	{ KV(KMIN_PHYS_TC_2_START), C(3) },   /* slot2 - tc option slot 2 */
-	{ KV(KMIN_PHYS_TC_3_START), C(4) }    /* slot3 - IO asic on b'board */
+	{ KV(KMIN_PHYS_TC_2_START), C(2) },   /* slot2 - tc option slot 2 */
+	{ KV(KMIN_PHYS_TC_3_START), C(3) }    /* slot3 - IO asic on b'board */
 };
 
 int tc_kmin_nslots =
@@ -107,14 +124,6 @@ struct tc_cpu_desc xine_tc_desc =
 
 /************************************************************************/
 
-#if 0
-#define TC_SCSI  "PMAZ-AA "
-#define TC_ETHER "PMAD-AA "
-#else
-#define TC_SCSI NULL
-#define TC_ETHER NULL
-#endif
-
 /* 3MAX (kn02) turbochannel slots  */
 struct confargs kn02_devs[8] = {
    /* The 3max  supposedly has "KN02    " at 0xbffc0410 */
@@ -123,7 +132,7 @@ struct confargs kn02_devs[8] = {
 	{ KN02_ASIC_NAME, 7,  0x0,   -1,   },	/* System CSR and subslots */
 	{ TC_ETHER, 	  6,  0x0,    6,   },	/* slot 6: Ether on cpu board*/
 	{ TC_SCSI, 	  5,  0x0,    5,   },	/* slot 5: SCSI on cpu board */
-/*XXX*/	{ NULL, 	  4,   -1,    0,   },	/* slot 3 reserved */
+/*XXX*/	{ NULL, 	  4,   -1,    0,   },	/* slot 4 reserved */
 /*XXX*/	{ NULL, 	  3,   -1,    0,   },	/* slot 3 reserved */
 	{ NULL, 	  2,  0x0,    2,   },	/* slot 2 - TC option slot 2 */
 	{ NULL, 	  1,  0x0,    1,   },	/* slot 1 - TC option slot 1 */
@@ -132,14 +141,14 @@ struct confargs kn02_devs[8] = {
 
 /* slot addreseses */
 static struct tc_slotdesc tc_kn02_slots [8] = {
-       	{ KV(KN02_PHYS_TC_0_START), },	/* slot 0 - tc option slot 0 */
-	{ KV(KN02_PHYS_TC_1_START), },	/* slot 1 - tc option slot 1 */
-	{ KV(KN02_PHYS_TC_2_START), },	/* slot 2 - tc option slot 2 */
-	{ KV(KN02_PHYS_TC_3_START), },	/* slot 3 - reserved */
-	{ KV(KN02_PHYS_TC_4_START), },	/* slot 4 - reserved */
-	{ KV(KN02_PHYS_TC_5_START), },	/* slot 5 - SCSI on cpu board */
-	{ KV(KN02_PHYS_TC_6_START), },	/* slot 6 - Ether on cpu board */
-	{ KV(KN02_PHYS_TC_7_START), }	/* slot 7 - system devices */
+       	{ KV(KN02_PHYS_TC_0_START), C(0)},	/* slot 0 - tc option slot 0 */
+	{ KV(KN02_PHYS_TC_1_START), C(1), },	/* slot 1 - tc option slot 1 */
+	{ KV(KN02_PHYS_TC_2_START), C(2), },	/* slot 2 - tc option slot 2 */
+	{ KV(KN02_PHYS_TC_3_START), C(3), },	/* slot 3 - reserved */
+	{ KV(KN02_PHYS_TC_4_START), C(4), },	/* slot 4 - reserved */
+	{ KV(KN02_PHYS_TC_5_START), C(5), },	/* slot 5 - SCSI on b`board */
+	{ KV(KN02_PHYS_TC_6_START), C(6), },	/* slot 6 - b'board Ether */
+	{ KV(KN02_PHYS_TC_7_START), C(7), }	/* slot 7 - system devices */
 
 };
 
@@ -153,9 +162,9 @@ int tc_kn02_nslots =
 #define TC_KN02_DEV_SCSI	5
 
 struct tc_builtin tc_kn02_builtins[] = {
-	{ KN02_ROM_NAME,7, 0x00000000, C(TC_KN02_DEV_IOASIC),	},
-	{ TC_ETHER,	6, 0x00000000, C(TC_KN02_DEV_ETHER),	},
-	{ TC_SCSI,	5, 0x00000000, C(TC_KN02_DEV_SCSI),	},
+	{ KN02_ROM_NAME,7, 0x0, C(TC_KN02_DEV_IOASIC) /* C(7)*/ },
+	{ TC_ETHER,	6, 0x0, C(TC_KN02_DEV_ETHER)  /* C(6)*/ },
+	{ TC_SCSI,	5, 0x0, C(TC_KN02_DEV_SCSI)   /* C(5)*/ },
 };