diff --git a/DRV/UTHER2.AI.DRV.S.txt b/DRV/UTHER2.AI.DRV.S.txt
index 7cbf5800..f6dacbeb 100644
--- a/DRV/UTHER2.AI.DRV.S.txt
+++ b/DRV/UTHER2.AI.DRV.S.txt
@@ -45,16 +45,10 @@ Dev.Detect		>STYA Args
 				>LDYA L.MSG.DETECT
 				>SYSCALL CPrintFYA
 				
-				ldx #$70
+				ldx #$70+$88
+				ldy #7
 				
-.1				txa						IO based detection, avoid scanning in Disk Controller IO!!!!
-				lsr
-				lsr
-				lsr
-				lsr
-				tay
-				
-				lda A2osX.SLOTS,y
+.1				lda A2osX.SLOTS,y		IO based detection, avoid scanning in Disk Controller IO!!!!
 				bne .2
 				
 				lda #W5100.MR.RST
@@ -89,6 +83,7 @@ Dev.Detect		>STYA Args
 				sec
 				sbc #$10
 				tax
+				dey
 				bne .1
 				
 				>LDYA L.MSG.DETECT.KO
@@ -99,12 +94,6 @@ Dev.Detect		>STYA Args
 				rts
 				
 .3				stx DEVSLOTx0
-				txa
-				lsr
-				lsr
-				lsr
-				lsr
-				tay
 				lda #A2osX.SLOTS.NET
 				sta A2osX.SLOTS,y
 				
diff --git a/DRV/UTHERNET2.DRV.S.txt b/DRV/UTHERNET2.DRV.S.txt
index 22dc093b..83e247b3 100644
--- a/DRV/UTHERNET2.DRV.S.txt
+++ b/DRV/UTHERNET2.DRV.S.txt
@@ -44,16 +44,10 @@ Dev.Detect		>STYA Args
 				>LDYA L.MSG.DETECT
 				>SYSCALL CPrintFYA
 				
-				ldx #$70
+				ldx #$70+$88
+				ldy #7
 				
-.1				txa						IO based detection, avoid scanning in Disk Controller IO!!!!
-				lsr
-				lsr
-				lsr
-				lsr
-				tay
-				
-				lda A2osX.SLOTS,y
+.1				lda A2osX.SLOTS,y		IO based detection, avoid scanning in Disk Controller IO!!!!
 				bne .2
 				
 				lda #W5100.MR.RST
@@ -88,6 +82,7 @@ Dev.Detect		>STYA Args
 				sec
 				sbc #$10
 				tax
+				dey
 				bne .1
 				
 				>LDYA L.MSG.DETECT.KO
@@ -98,12 +93,6 @@ Dev.Detect		>STYA Args
 				rts
 				
 .3				stx DEVSLOTx0
-				txa
-				lsr
-				lsr
-				lsr
-				lsr
-				tay
 				lda #A2osX.SLOTS.NET
 				sta A2osX.SLOTS,y
 				
diff --git a/Floppies/A2OSX.BOOT.po b/Floppies/A2OSX.BOOT.po
index a3325941..93062987 100644
Binary files a/Floppies/A2OSX.BOOT.po and b/Floppies/A2OSX.BOOT.po differ
diff --git a/Floppies/A2OSX.BUILD.po b/Floppies/A2OSX.BUILD.po
index 427d196d..76f84287 100644
Binary files a/Floppies/A2OSX.BUILD.po and b/Floppies/A2OSX.BUILD.po differ
diff --git a/Floppies/A2OSX.SRC.po b/Floppies/A2OSX.SRC.po
index 775b977b..089aeafb 100644
Binary files a/Floppies/A2OSX.SRC.po and b/Floppies/A2OSX.SRC.po differ
diff --git a/INC/NET.W5100.I.txt b/INC/NET.W5100.I.txt
index 98a25dfd..bafd61f1 100644
--- a/INC/NET.W5100.I.txt
+++ b/INC/NET.W5100.I.txt
@@ -14,13 +14,13 @@ AUTO 6
 				sta W5100.AR+1,x
 				.EM
 *--------------------------------------
-W5100.MR		.EQ	$C084	  			Mode Register
+W5100.MR		.EQ	$C084-$88  			Mode Register
 W5100.MR.RST		.EQ %10000000
 W5100.MR.PB			.EQ %00010000
 W5100.MR.PPPOE		.EQ %00001000
 W5100.MR.AI			.EQ %00000010
 W5100.MR.IND		.EQ %00000001
-W5100.AR		.EQ	$C085				Memory Pointer
+W5100.AR		.EQ	$C085-$88			Memory Pointer
 W5100.AR.GAR		.EQ $0001
 W5100.AR.SUBR		.EQ $0005
 W5100.AR.SHAR		.EQ $0009
@@ -70,7 +70,7 @@ W5100.AR.S0.TX.RD	.EQ $0422
 W5100.AR.S0.TX.WR	.EQ $0424
 W5100.AR.S0.RX.RSR	.EQ $0426
 W5100.AR.S0.RX.RD	.EQ $0428
-W5100.DR		.EQ	$C087
+W5100.DR		.EQ	$C087-$88
 *--------------------------------------
 TX.BASE				.EQ $4000
 RX.BASE				.EQ $6000