diff --git a/DRV/UTHERNET.DRV.S.txt b/DRV/UTHERNET.DRV.S.txt
index 9168ea6c..0d9dddba 100644
--- a/DRV/UTHERNET.DRV.S.txt
+++ b/DRV/UTHERNET.DRV.S.txt
@@ -195,12 +195,12 @@ DEV.HEADER.NAME	>PSTRING "ETH1"			NAME
 *--------------------------------------
 DRV.CS.START	.DA OPEN
 				.DA GETEVENT
-				.DA $FFFF				no COUT
+				.DA COUT
 				.DA CLOSE
 				.DA GETINFO
-				.DA $FFFF				no IRQ
+				.DA IRQ
 				.DA SEND
-				.DA $FFFF				no SETIPCFG
+				.DA SETIPCFG
 L.DEVINFO		.DA DEVINFO
 				.DA 0					end or relocation
 *--------------------------------------
@@ -238,7 +238,11 @@ GETEVENT		ldx DEVSLOTx0
 				and /PP.RxEvent.RxOK+PP.RxEvent.Brdcast+PP.RxEvent.IA
 				bne GETEVENT.RxOK
 				lda #ERR.DEV.NOFRAME
-				sec
+				
+COUT
+IRQ
+SETIPCFG
+GETEVENT.Err	sec
 				rts
 
 GETEVENT.RxOK	and /PP.RxEvent.Brdcast
@@ -249,10 +253,10 @@ GETEVENT.RxOK	and /PP.RxEvent.Brdcast
 				>LDYA RTDATA,x			discard RxStatus
 				
 				lda RTDATA+1,x			get RxLength
-				sta FRAMELEN+1
+				sta Size+1
 				pha
 				lda RTDATA,x
-				sta FRAMELEN
+				sta Size
 				clc
 				adc #2
 				tay
@@ -260,10 +264,10 @@ GETEVENT.RxOK	and /PP.RxEvent.Brdcast
 				bcc .11
 				inc
 				
-.11				>PUSHYA					FRAMLEN+2
+.11				>PUSHYA					Size+2
 				>PUSHBI 0
 				>SYSCALL SYS.GetMem
-				bcs .99
+				bcs GETEVENT.Err
 				>STYA ZPTmpPTR
 				txa
 				ldy #S.EVT.DATALO
@@ -272,27 +276,37 @@ GETEVENT.RxOK	and /PP.RxEvent.Brdcast
 				lda #S.EVT.F.NET+S.EVT.F.hMEM1
 				sta (pEvent)
 								
-				lda FRAMELEN
+				lda Size
 				sta (ZPTmpPTR)
+				eor #$ff
+				sta Counter
 				ldy #1
-				lda FRAMELEN+1
+				lda Size+1
 				sta (ZPTmpPTR),y
+				eor #$ff
+				sta Counter+1
 				
 				iny
 				
 				ldx DEVSLOTx0
 
-.1				jsr DecFrameLen
+.1				inc Counter
+				bne .12
+				inc Counter+1
 				beq .8
-				lda RTDATA,x
+				
+.12				lda RTDATA,x
 				sta	(ZPTmpPTR),y
 				iny
 				bne .2
 				inc ZPTmpPTR+1
 				
-.2				jsr DecFrameLen
+.2				inc Counter
+				bne .21
+				inc Counter+1
 				beq .8
-				lda RTDATA+1,x
+				
+.21				lda RTDATA+1,x
 				sta	(ZPTmpPTR),y
 				iny
 				bne .1
@@ -301,9 +315,6 @@ GETEVENT.RxOK	and /PP.RxEvent.Brdcast
 				
 .8				clc
 				rts
-				
-.99				sec				
-				rts
 *--------------------------------------
 CLOSE			jsr Reset
 				clc
@@ -339,10 +350,14 @@ GETINFO			lda #S.DEVINFO.NET.STATUS.10
 SEND			>PULLW ZPTmpPTR
 				
 				lda (ZPTmpPTR)
-				sta FRAMELEN
+				sta Size
+				eor #$ff
+				sta Counter
 				ldy #1
 				lda (ZPTmpPTR),y
-				sta FRAMELEN+1
+				sta Size+1
+				eor #$ff
+				sta Counter+1
 				
 				ldy #S.ETH.SRCMAC+5
 				ldx #5
@@ -355,7 +370,7 @@ SEND			>PULLW ZPTmpPTR
 				ldx DEVSLOTx0
 				>LDYAI PP.TxCMD.LID+PP.TxCMD.TxStartFULL
 				>STYA TxCMD,x
-				>LDYA FRAMELEN
+				>LDYA Size
 				>STYA TxLength,x
 				>LDYAI PP.BusST		
 				>STYA PacketPagePTR,x
@@ -375,27 +390,29 @@ SEND			>PULLW ZPTmpPTR
 				dey
 				bne	.1
 				
-				lda #ERR.DEV.TIMEOUT
-				sec
-				rts
-				
 .9				lda #ERR.DEV.NOBUFFER
 				sec
 				rts
 				
 SENDPREADY		ldy #2
 
-.1				jsr DecFrameLen
+.1				inc Counter
+				bne .11
+				inc Counter+1
 				beq .8
-				lda	(ZPTmpPTR),y
+				
+.11				lda	(ZPTmpPTR),y
 				sta RTDATA,x
 				iny
 				bne .2
 				inc ZPTmpPTR+1
 				
-.2				jsr DecFrameLen
+.2				inc Counter
+				bne .21
+				inc Counter+1
 				beq .8
-.3				lda	(ZPTmpPTR),y
+				
+.21				lda	(ZPTmpPTR),y
 				sta RTDATA+1,x
 				iny
 				bne .1
@@ -412,19 +429,11 @@ Reset			ldx DEVSLOTx0
 				>STYA PacketPageDATA,x
 				rts
 *--------------------------------------	
-DecFrameLen		lda FRAMELEN
-				bne .1
-				lda FRAMELEN+1
-				beq .8
-				dec FRAMELEN+1
-.1				dec FRAMELEN
-				lda #1					Make something NZ
-.8				rts
-*--------------------------------------	
 DRV.CS.END
 *--------------------------------------	
 DEVSLOTx0		.BS 1
-FRAMELEN		.BS 2
+Size			.BS 2
+Counter			.BS 2
 *--------------------------------------	
 DEVINFO			.DA #S.DEVINFO.TYPE.NET
 DEVFLAGS		.DA #0
diff --git a/DRV/UTHERNET2.DRV.S.txt b/DRV/UTHERNET2.DRV.S.txt
index 418a2129..1a393724 100644
--- a/DRV/UTHERNET2.DRV.S.txt
+++ b/DRV/UTHERNET2.DRV.S.txt
@@ -23,13 +23,13 @@ ZPTmpPTR		.EQ ZPDRV
 *--------------------------------------
 * WIZnet W5100 IO Registers
 *--------------------------------------
-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
@@ -62,7 +62,7 @@ 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
@@ -92,7 +92,7 @@ Dev.Detect		sta hArgs
 				>LDYA L.MSG.DETECT
 				>SYSCALL SYS.PSTROutYA
 				
-				ldx #$10
+				ldx #$10+$88
 .1				lda #W5100.MR.RST
 				sta W5100.MR,x
 
@@ -117,7 +117,7 @@ Dev.Detect		sta hArgs
 				clc
 				adc #$10
 				tax
-				bpl .1				#$80 ?
+				bcc .1				#$108 ?
 				
 				>LDYA L.MSG.DETECT.KO
 				>SYSCALL SYS.PSTROutYA
@@ -126,7 +126,7 @@ Dev.Detect		sta hArgs
 				sec
 				rts
 				
-.3				stx DEVSLOTx0
+.3				stx DEVSLOTx8
 				
 				lda hARGS
 				bne .4
@@ -184,12 +184,12 @@ DEV.HEADER.NAME	>PSTRING "ETH1"			NAME
 *--------------------------------------
 DRV.CS.START	.DA OPEN
 				.DA GETEVENT
-				.DA $FFFF				no COUT
+				.DA COUT
 				.DA CLOSE
 				.DA GETINFO
-				.DA $FFFF				no IRQ
+				.DA IRQ
 				.DA SEND
-				.DA $FFFF				no SETIPCFG
+				.DA SETIPCFG
 L.DEVINFO		.DA DEVINFO
 				.DA 0					end or relocation
 *--------------------------------------
@@ -223,7 +223,7 @@ OPEN			jsr Reset
 				clc
 				rts
 *--------------------------------------
-GETEVENT		ldx DEVSLOTx0
+GETEVENT		ldx DEVSLOTx8
 
 				>AR.SELECT S0.RX.RSR
 				lda W5100.DR,x		get the received size HI
@@ -231,6 +231,9 @@ GETEVENT		ldx DEVSLOTx0
 				bne GETEVENT.RxOK
 				
 				lda #ERR.DEV.NOFRAME
+COUT
+IRQ
+SETIPCFG
 GETEVENT.Err	sec
 				rts
 				
@@ -264,36 +267,34 @@ GETEVENT.RxOK	>AR.SELECT S0.RX.RD
 				ldy #S.EVT.DATALO
 				sta (pEvent),y
 				
+				lda #S.EVT.F.NET+S.EVT.F.hMEM1
+				sta (pEvent)
+
 				lda RXTX.Size
 				sta (ZPTmpPTR)
+				eor #$ff
+				sta Counter
 				
 				ldy #1
 				lda RXTX.Size+1
 				sta (ZPTmpPTR),y
-				
-				lda #S.EVT.F.NET+S.EVT.F.hMEM1
-				sta (pEvent)
-
-				sec
-				lda #0
-				sbc RXTX.Size
-				sta Counter
-				lda #0
-				sbc RXTX.Size+1
+				eor #$ff
 				sta Counter+1
 				
-				ldx DEVSLOTx0
+				ldx DEVSLOTx8
 
 				ldy #2
-.2				lda W5100.DR,x
+				
+.2				inc Counter
+				bne .3
+				inc Counter+1
+				beq .8
+				
+.3				lda W5100.DR,x
 				sta (ZPTmpPTR),y
 				iny
-				bne .3
-				inc ZPTmpPTR+1
-				
-.3				inc Counter
 				bne .2
-				inc Counter+1
+				inc ZPTmpPTR+1
 				bne .2
 				
 .8				>AR.SELECT S0.RX.RD
@@ -332,11 +333,16 @@ SEND			>PULLW ZPTmpPTR
 				
 				lda (ZPTmpPTR)
 				sta RXTX.Size
+				eor #$ff
+				sta Counter
+
 				ldy #1
 				lda (ZPTmpPTR),y
 				sta RXTX.Size+1
+				eor #$ff
+				sta Counter+1
 				
-				ldx DEVSLOTx0
+				ldx DEVSLOTx8
 				>AR.SELECT S0.TX.FSR
 				
 				lda W5100.DR,x		get send size HI
@@ -360,30 +366,22 @@ SEND.READY		>AR.SELECT S0.TX.WR
 				sta W5100.AR+1,x		Write LO
 				sta Offset
 				
-				sec
-				lda #0
-				sbc RXTX.Size
-				sta Counter
-
-				lda #0
-				sbc RXTX.Size+1
-				sta Counter+1
-				
 				ldy #2
 				
-.2				lda (ZPTmpPTR),y
-				sta W5100.DR,x
-				iny
+.2				inc Counter
 				bne .3
-				inc ZPTmpPTR+1
-				
-.3				inc Counter
-				bne .2
 
 				inc Counter+1
+				beq .8
+				
+.3				lda (ZPTmpPTR),y
+				sta W5100.DR,x
+				iny
+				bne .2
+				inc ZPTmpPTR+1
 				bne .2
 				
-				>AR.SELECT S0.TX.WR
+.8				>AR.SELECT S0.TX.WR
 				
 				clc
 				lda Offset
@@ -398,19 +396,19 @@ SEND.READY		>AR.SELECT S0.TX.WR
 				pla
 				sta W5100.DR,x			write LO
 				
-.8				>AR.SELECT S0.CR
+				>AR.SELECT S0.CR
 				lda #$20				SEND
 				sta W5100.DR,x
 				clc
 				rts
 *--------------------------------------
-Reset			ldx DEVSLOTx0
+Reset			ldx DEVSLOTx8
 				lda #W5100.MR.RST
 				sta W5100.MR,x
 				rts
 *--------------------------------------
 DRV.CS.END
-DEVSLOTx0		.BS 1
+DEVSLOTx8		.BS 1
 RXTX.Size		.BS 2
 Counter			.BS 2
 Offset			.BS 2