PR#3
PREFIX /A2OSX.SRC
LOMEM $C00
INC 1
AUTO 6
				.LIST OFF
				.OP	65C02
				.OR	$2000
				.TF /A2OSX.BOOT/DRV/UTHERNET.DRV
*--------------------------------------
				.INB INC/MACROS.I
				.INB INC/A2OSX.I
				.INB INC/LIBTCPIP.I
*--------------------------------------
ZPTmpPTR		.EQ ZPDRV
*--------------------------------------
DEVID			.EQ	$630E
*--------------------------------------
* CS8900A IO Registers
*--------------------------------------
RTDATA			.EQ	$C080				Receive/Transmit Data (DWORD)
TxCMD			.EQ	$C084   			Transmit Command
TxLength		.EQ	$C086				Transmission Length
IntStatusQueue	.EQ	$C088				Interrupt Status Queue
PacketPagePTR	.EQ	$C08A				PacketPage Pointer
PacketPageDATA	.EQ	$C08C				PacketPage Data (DWORD) 
*--------------------------------------
PP.ID			.EQ $0000				Product ID code (RO)
PP.RFBCNT		.EQ $0050				Received Frame Byte Counter (RO)
PP.RxCFG		.EQ	$0102				Receiver Configuration (RW)
PP.RxCFG.LID		.EQ	%00000000.00000011
PP.RxCTL		.EQ $0104				Receiver Control (RW)
PP.RxCTL.LID		.EQ	%00000000.00000101
PP.RxCTL.IAHashA	.EQ %00000000.01000000
PP.RxCTL.PromisA	.EQ %00000000.10000000
PP.RxCTL.RxOKA		.EQ %00000001.00000000
PP.RxCTL.MulticastA	.EQ %00000010.00000000
PP.RxCTL.IA			.EQ %00000100.00000000
PP.RxCTL.BroadcastA	.EQ %00001000.00000000
PP.RxCTL.CRCerrorA	.EQ %00010000.00000000
PP.RxCTL.RuntA		.EQ %00100000.00000000
PP.RxCTL.ExtradataA	.EQ %01000000.00000000
PP.TxCFG		.EQ	$0106				Transmit Configuration (RW)
PP.TxCMD		.EQ $0108				Receiver Control (RW)
PP.TxCMD.LID			.EQ	%00000000.00001001
*PP.TxCMD.TxStart5		.EQ %00000000.00000000
*PP.TxCMD.TxStart381	.EQ %00000000.01000000
*PP.TxCMD.TxStart1021	.EQ %00000000.10000000
PP.TxCMD.TxStartFULL	.EQ %00000000.11000000
*PP.TxCMD.Force			.EQ %00000001.00000000
*PP.TxCMD.OneColl		.EQ %00000010.00000000
*PP.TxCMD.InhibitCRC	.EQ %00010000.00000000
*PP.TxCMD.TxPadDis		.EQ %00100000.00000000
PP.BufCFG		.EQ $010A
PP.LineCTL		.EQ $0112				Line Control (RW)
PP.LineCTL.LID		.EQ	%00000000.00010011
PP.LineCTL.SerRxOn	.EQ %00000000.01000000
PP.LineCTL.SerTxOn	.EQ %00000000.10000000
PP.LineCTL.10BaseT	.EQ %00000000.00000000
PP.LineCTL.AUIonly	.EQ %00000001.00000000
PP.LineCTL.Auto		.EQ %00000010.00000000
PP.SelfCTL		.EQ	$0114				Self Control (RW)
PP.SelfCTL.LID		.EQ	%00000000.00010101
PP.SelfCTL.RESET	.EQ	%00000000.01000000
PP.SelfCTL.SWSuspnd	.EQ	%00000000.10000000
PP.SelfCTL.HWSleepE	.EQ	%00000001.00000000
PP.SelfCTL.HWStndby	.EQ	%00000010.00000000
PP.BufCTL		.EQ $0116
PP.TestCTL		.EQ $0118
PP.TestCTL.LID		.EQ %00000000.00011001
PP.TestCTL.DisLT	.EQ %00000000.10000000
PP.TestCTL.FDX		.EQ %01000000.00000000
PP.ISQ			.EQ $0120
PP.RxEvent		.EQ	$0124				Receiver Event (RO) 
PP.RxEvent.LID		.EQ	%00000000.00000100
PP.RxEvent.RxOK		.EQ %00000001.00000000
PP.RxEvent.IA		.EQ %00000100.00000000
PP.RxEvent.Brdcast	.EQ %00001000.00000000
PP.RxEvent.CRCerror	.EQ %00010000.00000000
PP.RxEvent.Runt		.EQ %00100000.00000000
PP.RxEvent.Xtradata	.EQ %01000000.00000000
PP.TxEvent		.EQ $0128				Transmitter Event (RO)
PP.TxEvent.LID		.EQ	%00000000.00001000
PP.BufEvent		.EQ $012C
PP.RxMISS		.EQ $0130
PP.TxCOL		.EQ $0132
PP.LineST		.EQ	$0134				Line Status (RO)
PP.LineST.LID		.EQ	%00000000.00010100
PP.LineST.LinkOK	.EQ	%00000000.10000000
PP.LineST.AUI		.EQ	%00000001.00000000
PP.LineST.10BT		.EQ	%00000010.00000000
PP.LineST.PolOK		.EQ	%00010000.00000000
PP.LineST.CRS		.EQ	%01000000.00000000
PP.SelfST		.EQ	$0136				Self Status (RO)
PP.SelfST.INITD		.EQ	%00000000.10000000
PP.BusST		.EQ	$0138				Bus Status (RO)
PP.BusST.LID		.EQ	%00000000.00011000
PP.BusST.TxBidErr	.EQ %00000000.10000000
PP.BusST.Rdy4TxNOW	.EQ %00000001.00000000
PP.TDR			.EQ	$013C
PP.MAC			.EQ	$0158				MAC Address (RW)
PP.RxStatus		.EQ $0400
PP.RxLength		.EQ $0402
PP.RxFrame		.EQ $0404
PP.TxFrame		.EQ $0A00
*--------------------------------------
*			File Header (16 Bytes)
*--------------------------------------
CS.START		cld
				jmp Dev.Detect			cld,jmp abs=DRV
				.DA #$61				6502,Level 1 (65c02)
				.DA #1					DRV Layout Version 1
				.DA 0
				.DA CS.END-CS.START			Code Length
				.DA DEV.HEADER-CS.START		Device Header Offset
				.DA DRV.CS.START-CS.START	Driver Code Offset
				.DA DRV.CS.END-DRV.CS.START	Drv Code Length
*--------------------------------------
* Relocation Table
*--------------------------------------
L.MSG.DETECT	.DA MSG.DETECT
L.MSG.DETECT.OK	.DA MSG.DETECT.OK
L.MSG.DETECT.KO	.DA MSG.DETECT.KO
L.DEV.HEADER.NAME	.DA DEV.HEADER.NAME
				.DA 0					End Of Reloc Table
*--------------------------------------
Dev.Detect		sta hArgs
				>LDYA L.MSG.DETECT
				>SYSCALL SYS.PSTROutYA
				
				ldx #$10
.1				>LDYAI PP.ID
				>STYA PacketPagePTR,x
				>LDYA PacketPageDATA,x
				cpy	#DEVID
				bne	.2
				cmp	/DEVID
				beq	.3
				
.2				inc DEV.HEADER.NAME+4
				txa
				clc
				adc #$10
				tax
				cpx #$80
				bne .1
				
				>LDYA L.MSG.DETECT.KO
				>SYSCALL SYS.PSTROutYA

				lda #DEVMGR.ERRNOHW
				sec
				rts
				
.3				stx DEVSLOTx0
				
				lda hARGS
				bne .4
				lda #$00
				sta MAC
				lda #$0E
				sta MAC+1
				lda #$3A
				sta MAC+2
				lda A2osX.RANDOM16
				eor A2osX.TIMER16
				sta MAC+3
				eor A2osX.RANDOM16+1
				sta MAC+4
				eor A2osX.TIMER16+1
				sta MAC+5
				bra .8
				
.4				>SYSCALL SYS.GetMemPtrA
				>STYA ZPTmpPTR
				jsr DecodeMac
				bcc .8
				lda #DEVMGR.ERRICL
				sec
				rts
				
.8				>LDYA L.MSG.DETECT.OK
				>SYSCALL SYS.PSTROutYA
				>LDYA L.DEV.HEADER.NAME
				>SYSCALL SYS.PSTROutYA
				lda #13
				>SYSCALL SYS.COutA
				clc
				rts
*--------------------------------------
				.INB DRV/X.NET.DRV.S
*--------------------------------------
CS.END
MSG.DETECT		>PSTRING "UtherNet/CS8900A Driver.\n"
MSG.DETECT.OK	>PSTRING "UtherNet/CS8900A Installed As Device : "
MSG.DETECT.KO	>PSTRING "Hardware Not Found.\n"
hArgs			.BS 1
*--------------------------------------
*			Device Header (16 Bytes)
*--------------------------------------
DEV.HEADER		cld
				jmp (DRV.CS.START,x)
				.HS 00
				.DA #S.DEV.F.SHARE+S.DEV.F.EVENT
DEV.HEADER.NAME	>PSTRING "ETH1"			NAME
				.HS 00
				.HS 00.00.00.00
*--------------------------------------
*			Driver Code
*--------------------------------------
DRV.CS.START	.DA OPEN
				.DA GETEVENT
				.DA COUT
				.DA CLOSE
				.DA GETINFO
				.DA IRQ
				.DA SEND
				.DA SETIPCFG
L.DEVINFO		.DA DEVINFO
				.DA 0					end or relocation
*--------------------------------------
OPEN			jsr Reset
				>LDYAI PP.RxCTL
				>STYA PacketPagePTR,x
				>LDYAI PP.RxCTL.LID+PP.RxCTL.RxOKA+PP.RxCTL.IA+PP.RxCTL.BroadcastA
				>STYA PacketPageDATA,x

				>LDYAI PP.MAC
				>STYA PacketPagePTR,x
				>LDYA MAC
				>STYA PacketPageDATA,x
				>LDYAI PP.MAC+2
				>STYA PacketPagePTR,x
				>LDYA MAC+2
				>STYA PacketPageDATA,x
				>LDYAI PP.MAC+4
				>STYA PacketPagePTR,x
				>LDYA MAC+4
				>STYA PacketPageDATA,x
				
				>LDYAI PP.LineCTL
				>STYA PacketPagePTR,x
				>LDYAI PP.LineCTL.LID+PP.LineCTL.SerRxOn+PP.LineCTL.SerTxOn+PP.LineCTL.Auto
				>STYA PacketPageDATA,x
				clc
				rts
*--------------------------------------
GETEVENT		ldx DEVSLOTx0
				>LDYAI PP.RxEvent
				>STYA PacketPagePTR,x
				>LDYA PacketPageDATA,x
				and /PP.RxEvent.RxOK+PP.RxEvent.Brdcast+PP.RxEvent.IA
				bne GETEVENT.RxOK
				lda #ERR.DEV.NOFRAME
COUT
IRQ
SETIPCFG
GETEVENT.Err	sec
				rts

GETEVENT.RxOK	and /PP.RxEvent.Brdcast
				beq .10
				lda #$80
.10				ldy #S.EVT.DATAHI
				sta (pEvent),y		
				>LDYA RTDATA,x			discard RxStatus
				
				lda RTDATA+1,x			get RxLength
				sta Size+1
				pha
				lda RTDATA,x
				sta Size
				clc
				adc #2
				tay
				pla
				bcc .11
				inc
				
.11				>PUSHYA					Size+2
				>PUSHBI 0
				>SYSCALL SYS.GetMem
				bcs GETEVENT.Err
				>STYA ZPTmpPTR
				txa
				ldy #S.EVT.DATALO
				sta (pEvent),y

				lda #S.EVT.F.NET+S.EVT.F.hMEM1
				sta (pEvent)
								
				lda Size
				sta (ZPTmpPTR)
				eor #$ff
				sta Counter
				ldy #1
				lda Size+1
				sta (ZPTmpPTR),y
				eor #$ff
				sta Counter+1
				
				iny
				
				ldx DEVSLOTx0

.1				inc Counter
				bne .12
				inc Counter+1
				beq .8
				
.12				lda RTDATA,x
				sta	(ZPTmpPTR),y
				iny
				bne .2
				inc ZPTmpPTR+1
				
.2				inc Counter
				bne .21
				inc Counter+1
				beq .8
				
.21				lda RTDATA+1,x
				sta	(ZPTmpPTR),y
				iny
				bne .1
				inc ZPTmpPTR+1
				bne .1
				
.8				clc
				rts
*--------------------------------------
CLOSE			jsr Reset
				clc
				rts
*--------------------------------------
GETINFO			lda #S.DEVINFO.NET.STATUS.10
				sta LINK.STATUS

				ldx DEVSLOTx0
				>LDYAI PP.LineST
				>STYA PacketPagePTR,x
				>LDYA PacketPageDATA,x
				tya
				and #PP.LineST.LinkOK
				bne .1
				lda LINK.STATUS
				ora #S.DEVINFO.NET.STATUS.OK
				sta LINK.STATUS
	
.1				>LDYAI PP.TestCTL
				>STYA PacketPagePTR,x
				>LDYA PacketPageDATA,x
				and /PP.TestCTL.FDX
				bne .2
				lda LINK.STATUS
				ora #S.DEVINFO.NET.STATUS.FD
				sta LINK.STATUS
				
.2				>LDYA L.DEVINFO
				clc
				rts
*--------------------------------------
SEND			>PULLW ZPTmpPTR
				
				lda (ZPTmpPTR)
				sta Size
				eor #$ff
				sta Counter
				ldy #1
				lda (ZPTmpPTR),y
				sta Size+1
				eor #$ff
				sta Counter+1
				
				ldx DEVSLOTx0
				>LDYAI PP.TxCMD.LID+PP.TxCMD.TxStartFULL
				>STYA TxCMD,x
				>LDYA Size
				>STYA TxLength,x
				>LDYAI PP.BusST		
				>STYA PacketPagePTR,x
				
				ldy #16
.1				lda	PacketPageDATA,x
				and #PP.BusST.TxBidErr
				bne .9
				lda	PacketPageDATA+1,x
				and /PP.BusST.Rdy4TxNOW
				bne SENDPREADY
				lda	#0
				
.2				dec
				bne	.2
				
				dey
				bne	.1
				
.9				lda #ERR.DEV.NOBUFFER
				sec
				rts
				
SENDPREADY		ldy #S.ETH.SRCMAC+5
				ldx #5
.10				lda MAC,x
				sta (ZPTmpPTR),y
				dey
				dex
				bpl .10

				ldx DEVSLOTx0
				ldy #2

.1				inc Counter
				bne .11
				inc Counter+1
				beq .8
				
.11				lda	(ZPTmpPTR),y
				sta RTDATA,x
				iny
				bne .2
				inc ZPTmpPTR+1
				
.2				inc Counter
				bne .21
				inc Counter+1
				beq .8
				
.21				lda	(ZPTmpPTR),y
				sta RTDATA+1,x
				iny
				bne .1
				inc ZPTmpPTR+1
				bne .1
				
.8				clc
				rts	
*--------------------------------------
Reset			ldx DEVSLOTx0
				>LDYAI PP.SelfCTL
				>STYA PacketPagePTR,x
				>LDYAI PP.SelfCTL.LID+PP.SelfCTL.RESET
				>STYA PacketPageDATA,x
				rts
DRV.CS.END
*--------------------------------------
DEVSLOTx0		.BS 1
Size			.BS 2
Counter			.BS 2
DEVINFO			.DA #S.DEVINFO.TYPE.NET
DEVFLAGS		.DA #0
MAC				.BS 6
LINK.STATUS		.BS 1					OK/DUPLEX/SPEED
MAN
SAVE DRV/UTHERNET.DRV.S
ASM