PR#3
PREFIX /A2OSX.SRC
NEW
INC 1
AUTO 6
				.LIST OFF	
				.OP	65C02
				.OR	$2000
				.TF /A2OSX.BOOT/DRV/UTHERNET.DRV
*--------------------------------------
				.INB INC/MACROS.I
				.INB INC/A2OSX.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) 
*--------------------------------------
TxCMD.LID			.EQ	%00000000.00001001
TxCMD.TxStart5		.EQ %00000000.00000000	00 = start after 5 Bytes
TxCMD.TxStart381	.EQ %00000000.01000000	01 = start after 381 Bytes
TxCMD.TxStart1021	.EQ %00000000.10000000	10 = start after 1021 Bytes
TxCMD.TxStartFULL	.EQ %00000000.11000000	11 = start after ENTIRE Frame
TxCMD.Force			.EQ %00000001.00000000
TxCMD.OneColl		.EQ %00000010.00000000
TxCMD.InhibitCRC	.EQ %00010000.00000000
TxCMD.TxPadDis		.EQ %00100000.00000000
*--------------------------------------
* PacketPage Offsets & Masks
*--------------------------------------
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.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.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
*--------------------------------------
ERRTNOFRAME		.EQ 0
ERRNOBUFFER		.EQ 1
ERRTIMEOUT		.EQ 2
*--------------------------------------
*			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				stx DEVSLOTx0
				>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		Not Found in any slot, exiting
				sec
				rts
				
.3				lda hARGS
				
				beq .4
				>SYSCALL SYS.GetMemPtrA
				>STYA ZPTmpPTR
				jsr DecodeMac
				bcc .4
				lda #DEVMGR.ERRICL
				sec
				rts
				
.4				>LDYA L.MSG.DETECT.OK
				>SYSCALL SYS.PSTROutYA
				>LDYA L.DEV.HEADER.NAME
				>SYSCALL SYS.PSTROutYA
				lda #13
				>SYSCALL SYS.COutA
				clc
				rts
*--------------------------------------
DecodeMac		lda (ZPTmpPTR)
				cmp #12
				bne .9
				
				ldy #1
				ldx #0
				
.1				lda (ZPTmpPTR),y
				jsr Asc2NibbleA
				bcs .9
				
				asl
				asl
				asl
				asl
				sta MAC,x
				
				iny
				lda (ZPTmpPTR),y
				jsr Asc2NibbleA
				bcs .9
				
				ora MAC,x
				sta MAC,x
				inx
				iny
				cpy #13
				bne .1
				
				clc
				rts
				
.9				sec
				rts
*--------------------------------------
Asc2NibbleA		cmp #$30
				bcc .9
				cmp #$3A
				bcs .1
				and #$0F
				clc
				rts	
.1				cmp #$41
				bcc .9
				cmp #$47
				bcs .9
				sbc #$36
				clc
				rts
.9				sec
				rts			
*--------------------------------------
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)
				.DA #S.DEV.F.SHARE+S.DEV.F.EVENT
DEV.HEADER.NAME	>PSTRING "ETH1"			NAME
				.HS 00.00
				.HS 00.00.00.00
*--------------------------------------
*			Driver Code
*--------------------------------------
DRV.CS.START	.DA OPEN
				.DA GETEVENT
				.DA $FFFF				no COUT
				.DA CLOSE
				.DA GETINFO
				.DA $FFFF				no IRQ
				.DA SEND
L.DEVINFO		.DA DEVINFO
				.DA 0					end or relocation
*--------------------------------------
* input :
* none
* output :
* CC on success
* CS on error
*--------------------------------------				
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
*--------------------------------------
* input :
*  pEvent
* output :
* CC no event
* CS event
*--------------------------------------				
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 #ERRTNOFRAME
				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 
				>LDYA RTDATA,x			get RxLength
				>STYA FRAMELEN
				>PUSHYA
				>PUSHBI 0
				>SYSCALL SYS.GetMem
				bcs .99
				>STYA ZPTmpPTR
				txa
				ldy #S.EVT.DATALO
				sta (pEvent),y
				ldy #S.EVT.DATAW1
				lda FRAMELEN
				sta (pEvent),y
				iny
				lda FRAMELEN+1
				sta (pEvent),y
				lda #S.EVT.F.NET+S.EVT.F.hMEM1
				sta (pEvent)
				ldy #0
				ldx DEVSLOTx0
				
.1				lda RTDATA,x
				sta	(ZPTmpPTR),y
				iny
				bne .2
				inc ZPTmpPTR+1
.2				jsr DecFrameLen
				beq .8
				lda RTDATA+1,x
				sta	(ZPTmpPTR),y
				iny
				bne .3
				inc ZPTmpPTR+1
.3				jsr DecFrameLen
				bne .1
.8				clc
				rts
				
.99				sec				
				rts
*--------------------------------------
CLOSE			jsr Reset
				clc
				rts
*--------------------------------------				
*  in:
*  out:
*   Y,A = BUFFER PTR
* 	CC on success
* 	CS on error
*--------------------------------------
GETINFO			>LDYA L.DEVINFO
				clc
				rts
*--------------------------------------				
*  in:
* 	PULLW = FRAME PTR
*   PULLW = FRAME LEN
*  out:
* 	CC on success
* 	CS on error
*--------------------------------------				
SEND			>PULLW ZPTmpPTR
				>PULLW FRAMELEN

				ldy #11					Add Src MAC Address
				ldx #5
.10				lda MAC,x
				sta (ZPTmpPTR),y
				dey
				dex
				bpl .10

				ldx DEVSLOTx0
				>LDYAI TxCMD.LID+TxCMD.TxStartFULL
				>STYA TxCMD,x
				>LDYA FRAMELEN
				>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
				bra *
				lda	#0
.2				dec
				bne	.2
				dey
				bne	.1
				bra *
				lda #ERRTIMEOUT
				sec
				rts
.9				bra *
				lda #ERRNOBUFFER
				sec
				rts
				
SENDPREADY		ldy #0
.1				lda	(ZPTmpPTR),y
				sta RTDATA,x
				iny
				bne .2
				inc ZPTmpPTR+1
.2				jsr DecFrameLen
				beq .8
.3				lda	(ZPTmpPTR),y
				sta RTDATA+1,x
				iny
				bne .5
				inc ZPTmpPTR+1
.5				jsr DecFrameLen
				bne .1
.8				clc
				rts	
*--------------------------------------
* 				PRIVATE
*--------------------------------------
Reset			ldx DEVSLOTx0
				>LDYAI PP.SelfCTL
				>STYA PacketPagePTR,x
				>LDYAI PP.SelfCTL.LID+PP.SelfCTL.RESET
				>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
*--------------------------------------	
DEVINFO			.DA #S.DEVINFO.TYPE.NET
MAC				.BS 6
LINK.STATUS		.BS 1
LINK.SPEED		.BS 1					SPEED/DUPLEX
*--------------------------------------
MAN
SAVE DRV/UTHERNET.DRV.S
ASM