PR#3
PREFIX /A2OSX.SRC
LOMEM $C00
INC 1
AUTO 6
				.LIST OFF	
				.OP	65C02
				.OR	$2000
				.TF /A2OSX.BOOT/DRV/UTHER2.AI.DRV
*--------------------------------------
				.INB INC/MACROS.I
				.INB INC/A2OSX.I
				.INB INC/LIBTCPIP.I
*--------------------------------------
ZPTmpPTR		.EQ ZPDRV
*--------------------------------------
				.MA AR.SELECT
				lda /W5100.AR.]1
				sta W5100.AR,x
				lda #W5100.AR.]1
				sta W5100.AR+1,x
				.EM
*--------------------------------------
* WIZnet W5100 IO Registers
*--------------------------------------
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-$88			Memory Pointer
W5100.AR.GAR		.EQ $0001
W5100.AR.SUBR		.EQ $0005
W5100.AR.SHAR		.EQ $0009
W5100.AR.SIPR		.EQ $000F
W5100.AR.IR			.EQ $0015
W5100.AR.IMR		.EQ $0016
W5100.AR.RTR		.EQ $0017
W5100.AR.RCR		.EQ $0019
W5100.AR.RMSR		.EQ $001A
W5100.AR.TMSR		.EQ $001B
W5100.AR.PATR		.EQ $001C
*W5100.AR.PTIMER		.EQ $0028
*W5100.AR.PMAGIC		.EQ $0029
*W5100.AR.UIPR		.EQ $002A
*W5100.AR.UPORT		.EQ $002E
W5100.AR.S0.MR		.EQ $0400
W5100.AR.S0.MR.MULTI	.EQ $80
W5100.AR.S0.MR.MF		.EQ $40
W5100.AR.S0.MR.NDMC		.EQ $20
W5100.AR.S0.MR.TCP		.EQ $01
W5100.AR.S0.MR.UDP		.EQ $02
W5100.AR.S0.MR.IPRAW	.EQ $03
W5100.AR.S0.MR.MACRAW	.EQ $04
W5100.AR.S0.MR.PPPOE	.EQ $05
W5100.AR.S0.CR		.EQ $0401
W5100.AR.S0.IR		.EQ $0402
W5100.AR.S0.SR		.EQ $0403
W5100.AR.S0.PORT	.EQ $0404
W5100.AR.S0.DHAR	.EQ $0406
W5100.AR.S0.DIPR	.EQ $040C
W5100.AR.S0.DPORT	.EQ $0410
W5100.AR.S0.MSSR	.EQ $0412
W5100.AR.S0.PROTO	.EQ $0414
W5100.AR.S0.TOS		.EQ $0415
W5100.AR.S0.TTL		.EQ $0416
W5100.AR.S0.TX.FSR	.EQ $0420
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-$88
*--------------------------------------
TX.BASE				.EQ $4000
RX.BASE				.EQ $6000
RXTX.MASK			.EQ $1FFF
*--------------------------------------
*			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+$88
.1				lda #W5100.MR.RST
				sta W5100.MR,x

				lda #W5100.MR.AI+W5100.MR.IND
				sta W5100.MR,x
 
				lda W5100.MR,x
				cmp #W5100.MR.AI+W5100.MR.IND
				bne .2
				
				>AR.SELECT RTR			Double Check with RTR default value...
				
				lda W5100.DR,x		Get RTR HI
				cmp /2000
				bne .2
				lda W5100.DR,x		Get RTR LO 
				cmp #2000
				beq	.3
				
.2				inc DEV.HEADER.NAME+4
				txa
				clc
				adc #$10
				tax
				bcc .1				#$108 ?
				
				>LDYA L.MSG.DETECT.KO
				>SYSCALL SYS.PStrOutYA

				lda #DEVMGR.ERRNOHW
				sec
				rts
				
.3				stx DEVSLOTx8
				
				lda hARGS
				bne .4

				lda #$00
				sta MAC
				lda #$08
				sta MAC+1
				lda #$DC
				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 "UtherNet2/W5100 Driver (ARP OffLoad).\n"
MSG.DETECT.OK	>PSTRING "UtherNet2/W5100 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

				lda #W5100.MR.AI+W5100.MR.IND
				sta W5100.MR,x

				>AR.SELECT GAR
				
				ldy #8					GAR,SUBR
				
.1				stz W5100.DR,x
				dey
				bne .1

*				>AR.SELECT SHAR
				
				ldy	#0
				
.2				lda MAC,y
				sta W5100.DR,x
				iny
				cpy #6
				bne .2

*				>AR.SELECT SIPR
				
				ldy #4
				
.3				stz W5100.DR,x
				dey
				bne .3

				>AR.SELECT RMSR
				lda #3					8k,0k,0k,0k
				sta W5100.DR,x		...for Socket RX Buffers
				sta W5100.DR,x		...for Socket TX Buffers

				clc
				rts
*--------------------------------------
GETEVENT		ldx DEVSLOTx8

				>AR.SELECT S0.RX.RSR
				lda W5100.DR,x		get the received size HI
				ora W5100.DR,x      LO
				bne GETEVENT.RxOK
				
				lda #ERR.DEV.NOFRAME
COUT
IRQ				
GETEVENT.Err	sec
				rts
				
GETEVENT.RxOK	>AR.SELECT S0.RX.RD
				lda W5100.DR,x		get the received ptr HI
				ldy W5100.DR,x		get the received ptr LO
				and /RXTX.MASK
				ora /RX.BASE
				sta W5100.AR,x
				tya
				sta W5100.AR+1,x
				
				ldy #0
.10				lda W5100.DR,x
				sta RX.IP,y
				iny
				cpy #4
				bne .10
				
				ldy W5100.DR,x		get RX.Size HI
				sty RXTX.Size+1
				lda W5100.DR,x		get RX.Size LO
				sta RXTX.Size
				
				clc
				adc #S.IP
				pha
				tya
				adc /S.IP
				ply

				>PUSHYA
				>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 RXTX.Size
				sta (ZPTmpPTR)
				eor #$ff
				sta Counter
				
				ldy #1
				lda RXTX.Size+1
				sta (ZPTmpPTR),y
				eor #$ff
				sta Counter+1
				
				lda RXTX.Size
				clc
				adc #6				Header Size
				sta Offset
				
				lda RXTX.Size+1
				adc #0
				sta Offset+1
				
				ldy #S.IP.DST+3
				ldx #3
				
.1				lda RX.IP,x
				sta (ZPTmpPTR),y
				dey
				dex
				bpl .1
				
				ldx DEVSLOTx8

				ldy #S.IP
				
.2				inc Counter
				bne .3
				inc Counter+1
				beq .8
				
.3				lda W5100.DR,x
				sta (ZPTmpPTR),y
				iny
				bne .2
				inc ZPTmpPTR+1
				bne .2
				
.8				>AR.SELECT S0.RX.RD
				ldy W5100.DR,x			Get HI
				lda W5100.DR,x			Get LO
				clc
				adc Offset
				pha						save LO
				tya
				adc Offset+1
				pha
				>AR.SELECT S0.RX.RD
				pla
				sta W5100.DR,x			write HI
				pla
				sta W5100.DR,x			write LO
				
				>AR.SELECT S0.CR
				lda #$40				RECV
				sta W5100.DR,x
				
				ldy #S.IP.DST
				lda (ZPTmpPTR),y
				
.81				iny
				and (ZPTmpPTR),y
				cpy #S.IP.DST+3
				bne .81					if EQ, CS

				inc						$ff = Broadcast ??
				beq .82
				clc						not a broadcast
				
.82				lda #$00
				ror
				ldy #S.EVT.DATAHI
				sta (pEvent),y		
				
*				clc						cleared by ROR
				rts
*--------------------------------------
CLOSE			jsr Reset
				clc
				rts
*--------------------------------------				
GETINFO			>LDYA L.DEVINFO
				clc
				rts
*--------------------------------------				
SEND			>PULLW ZPTmpPTR
				
				lda (ZPTmpPTR)
				sec
				sbc #S.IP-2
				sta RXTX.Size
				eor #$ff
				sta Counter
				
				ldy #1
				lda (ZPTmpPTR),y
				sbc /S.IP-2
				sta RXTX.Size+1
				eor #$ff
				sta Counter+1
				
				ldx DEVSLOTx8
				>AR.SELECT S0.TX.FSR
				
				lda W5100.DR,x		get send size HI
				ldy W5100.DR,x      LO
				cpy RXTX.Size
				sbc RXTX.Size+1
				bcs SEND.READY

				lda #ERR.DEV.NOBUFFER
				sec
				rts
				
SEND.READY		>AR.SELECT S0.DIPR
				ldy #S.IP.DST

.1				lda (ZPTmpPTR),y
				sta  W5100.DR,x
				iny
				cpy #S.IP.DST+4
				bne .1
				
				>AR.SELECT S0.PROTO
				ldy #S.IP.PROTOCOL
				lda (ZPTmpPTR),y
				sta W5100.DR,x
				
*				>AR.SELECT S0.TOS
				stz W5100.DR,x
				
*				>AR.SELECT S0.TTL
				lda #K.IP.TTL
				sta W5100.DR,x
				
				>AR.SELECT S0.TX.WR
				lda W5100.DR,x			Get HI
				ldy W5100.DR,x			Get LO
				and /RXTX.MASK
				ora /TX.BASE
				sta W5100.AR,x			Write HI
				sta Offset+1
				tya
				sta W5100.AR+1,x		Write LO
				sta Offset
				
				ldy #S.IP
				
.2				inc Counter
				bne .3
				inc Counter+1
				beq .8
				
.3				lda (ZPTmpPTR),y
				sta W5100.DR,x
				iny
				bne .2
				inc ZPTmpPTR+1
				bne .2
				
.8				>AR.SELECT S0.TX.WR
				
				clc
				lda Offset
				adc RXTX.Size
				pha						save LO
				
				lda Offset+1
				adc RXTX.Size+1
				sta W5100.DR,x			write HI
				pla
				sta W5100.DR,x			write LO
				
				>AR.SELECT S0.CR
				lda #$20				SEND
				sta W5100.DR,x
				clc
				rts
*--------------------------------------
SETIPCFG		>STYA ZPTmpPTR
				
				ldx DEVSLOTx8
				
				>AR.SELECT S0.CR
				lda #$10				CLOSE
				sta W5100.DR,x

.10				>AR.SELECT S0.SR
				lda W5100.DR,x
				bne .10					CLOSED ???

				>AR.SELECT GAR

				ldy #S.IPCFG.GW
				
.1				lda (ZPTmpPTR),y
				sta W5100.DR,x
				iny
				cpy #S.IPCFG.GW+4
				bne .1
				
*				>AR.SELECT SUBR			Implicit, next to GAR
				
				ldy #S.IPCFG.MASK
				
.2				lda (ZPTmpPTR),y
				sta W5100.DR,x
				iny
				cpy #S.IPCFG.MASK+4
				bne .2
				
				>AR.SELECT SIPR
				
				ldy #S.IPCFG.IP
				
.3				lda (ZPTmpPTR),y
				sta W5100.DR,x
				iny
				cpy #S.IPCFG.IP+4
				bne .3
				
				>AR.SELECT S0.MR
				lda #W5100.AR.S0.MR.IPRAW+W5100.AR.S0.MR.MF
				sta W5100.DR,x

*				>AR.SELECT S0.CR		Implicit, next to S0.MR
				lda #1					OPEN
				sta W5100.DR,x

				clc
				rts
*--------------------------------------
Reset			ldx DEVSLOTx8
				lda #W5100.MR.RST
				sta W5100.MR,x
				
				lda $C019				we can use VBL as we are not on //c
.1				eor $C019
				bpl .1
				
				lda $C019
.2				eor $C019
				bpl .2
				
				rts
*--------------------------------------
DRV.CS.END
DEVSLOTx8		.BS 1
RX.IP			.BS 4
RXTX.Size		.BS 2
Counter			.BS 2
Offset			.BS 2
*--------------------------------------
DEVINFO			.DA #S.DEVINFO.TYPE.NET
DEVFLAGS		.DA #S.DEVINFO.NET.FLAGS.ARPOFFLOAD+S.DEVINFO.NET.FLAGS.IPOFFLOAD
MAC				.BS 6
LINK.STATUS		.DA #S.DEVINFO.NET.STATUS.OK+S.DEVINFO.NET.STATUS.FD+S.DEVINFO.NET.STATUS.100
MAN
SAVE DRV/UTHER2.AI.DRV.S
ASM