NEW
  AUTO 3,1
*--------------------------------------
U1.Init			lda CONF.SLOT
				asl
				asl
				asl
				asl
				sta Slotn0
				tax

				lda /PP.ID
				sta PacketPagePTR+1,x
				lda #PP.ID
				sta PacketPagePTR,x

				lda PacketPageDATA+1,x
				cmp	/CS8900A.DEVID
				bne	.9

				lda PacketPageDATA,x
				cmp	#CS8900A.DEVID
				beq .1

.9				sec
				rts
				
.1				lda CONF.SLOT
				pha
				
				lda /PP.REVISION		Get Revision# of ths chip...
				sta PacketPagePTR+1,x
				lda #PP.REVISION
				sta PacketPagePTR,x

				lda PacketPageDATA+1,x
				pha
				lda PacketPageDATA,x
				pha

				lda #U1.Name
				pha
				lda /U1.Name
				pha
				
				>LDYAI VEDRIVE.NICOK
				jsr PrintFYA
				
				ldx Slotn0
				
				lda /PP.RxCTL
				sta PacketPagePTR+1,x
				lda #PP.RxCTL
				sta PacketPagePTR,x
				lda /PP.RxCTL.LID+PP.RxCTL.RxOKA+PP.RxCTL.IA+PP.RxCTL.BroadcastA+PP.RxCTL.RuntA
				sta PacketPageDATA+1,x
				lda #PP.RxCTL.LID+PP.RxCTL.RxOKA+PP.RxCTL.IA+PP.RxCTL.BroadcastA+PP.RxCTL.RuntA
				sta PacketPageDATA,x

				lda /PP.MAC
				sta PacketPagePTR+1,x
				lda #PP.MAC
				sta PacketPagePTR,x

				lda CONF.SRCMAC+1
				sta PacketPageDATA+1,x
				lda CONF.SRCMAC+0
				sta PacketPageDATA,x

				lda /PP.MAC+2
				sta PacketPagePTR+1,x
				lda #PP.MAC+2
				sta PacketPagePTR,x

				lda CONF.SRCMAC+3
				sta PacketPageDATA+1,x
				lda CONF.SRCMAC+2
				sta PacketPageDATA,x

				lda /PP.MAC+4
				sta PacketPagePTR+1,x
				lda #PP.MAC+4
				sta PacketPagePTR,x

				lda CONF.SRCMAC+5
				sta PacketPageDATA+1,x
				lda CONF.SRCMAC+4
				sta PacketPageDATA,x

				lda /PP.LineCTL
				sta PacketPagePTR+1,x
				lda #PP.LineCTL
				sta PacketPagePTR,x

				lda /PP.LineCTL.LID+PP.LineCTL.SerRxOn+PP.LineCTL.SerTxOn+PP.LineCTL.10BaseT
				sta PacketPageDATA+1,x
				lda #PP.LineCTL.LID+PP.LineCTL.SerRxOn+PP.LineCTL.SerTxOn+PP.LineCTL.10BaseT
				sta PacketPageDATA,x

				clc
				rts
*--------------------------------------
U1.READ			php
				sei

				ldx Slotn0

				lda /PP.RxEvent
				sta PacketPagePTR+1,x
				lda #PP.RxEvent
				sta PacketPagePTR,x

				lda PacketPageDATA+1,x
				ldy PacketPageDATA,x
				and /PP.RxEvent.RxOK+PP.RxEvent.IA+PP.RxEvent.Brdcast+PP.RxEvent.Runt
				beq U1.READWRITE.9

				lda RTDATA+1,x			discard RxStatus
				lda RTDATA,x

				lda RTDATA+1,x			get RxLength
				sta ZPBufCnt+1
				eor #$ff
				sta ZPnCnt+1

				lda RTDATA,x
				sta ZPBufCnt
				eor #$ff
				sta ZPnCnt

				ldx Slotn0

				lda ZPBufPtr+1
				pha

				ldy #0

.2				inc ZPnCnt
				bne .3

				inc ZPnCnt+1
				beq .8

.3				lda RTDATA,x
				sta	(ZPBufPtr),y
				iny
				
				inc ZPnCnt
				bne .4

				inc ZPnCnt+1
				beq .8

.4				lda RTDATA+1,x
				sta	(ZPBufPtr),y
				iny
				bne .2

				inc ZPBufPtr+1
				bra .2

.8				pla
				sta ZPBufPtr+1
				
				plp
				clc
				rts
*--------------------------------------
U1.READWRITE.9	plp
				sec
				rts
*--------------------------------------
U1.WRITE		php
				sei

				ldx Slotn0

				lda /PP.TxCMD.LID+PP.TxCMD.TxStartFULL
				sta TxCMD+1,x
				lda #PP.TxCMD.LID+PP.TxCMD.TxStartFULL
				sta TxCMD,x
				
				lda ZPBufCnt+1
				sta TxLength+1,x
				eor #$ff
				sta ZPnCnt+1

				lda ZPBufCnt
				sta TxLength,x
				eor #$ff
				sta ZPnCnt

				lda /PP.BusST		
				sta PacketPagePTR+1,x
				lda #PP.BusST		
				sta PacketPagePTR,x

				lda	PacketPageDATA+1,x
				ldy	PacketPageDATA,x
				bit /PP.BusST.Rdy4TxNOW
				beq U1.READWRITE.9

				ldx Slotn0

				ldy #0

.1				inc ZPnCnt
				bne .2

				inc ZPnCnt+1
				beq .8

.2				lda	(ZPBufPtr),y
				sta RTDATA,x
				iny

				inc ZPnCnt
				bne .3

				inc ZPnCnt+1
				beq .8

.3				lda	(ZPBufPtr),y
				sta RTDATA+1,x
				iny
				bne .1

				inc ZPBufPtr+1
				bne .1

.8				plp
				clc
				rts
*--------------------------------------
U1.Name			.PS "Uthernet V1"
*--------------------------------------
DRV.U1			.PH	DRV.NIC.START

				jmp DRV.U1.SendARP
				jmp DRV.U1.SendUDP

DRV.U1.Rcvd		php
				sei

				ldx DRV.BLK.Slotn0

				lda /PP.RxEvent
				sta PacketPagePTR+1,x
				lda #PP.RxEvent
				sta PacketPagePTR,x

				lda PacketPageDATA+1,x
				ldy PacketPageDATA,x
				and /PP.RxEvent.RxOK+PP.RxEvent.IA+PP.RxEvent.Brdcast+PP.RxEvent.Runt
				beq DRV.U1.9

				lda RTDATA+1,x			discard RxStatus
				lda RTDATA,x

				lda RTDATA+1,x			get RxLength
				sta DRV.FrameSize+1
				eor #$ff
				sta DRV.nCnt+1

				lda RTDATA,x
				sta DRV.FrameSize
				eor #$ff
				sta DRV.nCnt

				>LDYAI DRV.InBuf
				>STYA DRV.A1L

				ldy #0

.2				inc DRV.nCnt
				bne .3

				inc DRV.nCnt+1
				beq .8

.3				lda RTDATA,x
				sta	(DRV.A1L),y
				iny
				
				inc DRV.nCnt
				bne .4

				inc DRV.nCnt+1
				beq .8

.4				lda RTDATA+1,x
				sta	(DRV.A1L),y
				iny
				bne .2

				inc DRV.A1L+1
				bra .2

.8				plp
				clc
				rts				
*--------------------------------------
DRV.U1.9		plp
				sec
				rts
*--------------------------------------
DRV.U1.SendARP	>LDYAI S.ARP
				>STYA DRV.FrameSize
				>LDYAI DRV.ARPBuf
				bra DRV.U1.Send
*--------------------------------------
DRV.U1.SendUDP	>STYA DRV.FrameSize

				jsr DRV.BLK.IPUDPCheksum

				>LDYAI DRV.UDPBuf
				
DRV.U1.Send		>STYA DRV.A1L

				php
				sei

				ldx DRV.BLK.Slotn0

				lda /PP.TxCMD.LID+PP.TxCMD.TxStartFULL
				sta TxCMD+1,x
				lda #PP.TxCMD.LID+PP.TxCMD.TxStartFULL
				sta TxCMD,x
				
				lda DRV.FrameSize+1
				sta TxLength+1,x
				eor #$ff
				sta DRV.nCnt+1

				lda DRV.FrameSize
				sta TxLength,x
				eor #$ff
				sta DRV.nCnt

				lda /PP.BusST		
				sta PacketPagePTR+1,x
				lda #PP.BusST		
				sta PacketPagePTR,x

				lda	PacketPageDATA+1,x
				ldy	PacketPageDATA,x
				bit /PP.BusST.Rdy4TxNOW
				beq DRV.U1.9

				ldy #0

.1				inc DRV.nCnt
				bne .2

				inc DRV.nCnt+1
				beq .8

.2				lda	(DRV.A1L),y
				sta RTDATA,x
				iny

				inc DRV.nCnt
				bne .3

				inc DRV.nCnt+1
				beq .8

.3				lda (DRV.A1L),y
				sta RTDATA+1,x
				iny
				bne .1

				inc DRV.A1H
				bra .1

.8				plp
				clc
				rts
*--------------------------------------
				.EP

				.LIST ON
DRV.U1.SIZE		.EQ *-DRV.U1
				.LIST OFF
*--------------------------------------
MAN
SAVE usr/src/sys/pm.vedrive.s.u1
LOAD usr/src/sys/pm.vedrive.s
ASM