PR#3
PREFIX /A2OSX.BUILD
LOMEM $A00
INC 1
AUTO 6
				.LIST OFF	
				.OP	65C02
				.OR	$2000
				.TF /A2OSX.BUILD/DRV/LANCEGS.DRV
*--------------------------------------
				.INB /A2OSX.BUILD/INC/MACROS.I
				.INB /A2OSX.BUILD/INC/A2OSX.I
				.INB /A2OSX.BUILD/INC/MLI.ERR.I
				.INB /A2OSX.BUILD/INC/NET.I
				.INB /A2OSX.BUILD/INC/NET.91C96.I
				.INB /A2OSX.BUILD/INC/LIBTCPIP.I
*--------------------------------------
ZPTmpPTR		.EQ ZPDRV
Size		.EQ ZPDRV+2
Counter			.EQ ZPDRV+4
*--------------------------------------
*			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		>STYA Args
				>LDYA L.MSG.DETECT
				>SYSCALL CPrintFYA
				
				ldx #$70
				ldy #7
				
.1				lda A2osX.SLOTS,y		IO based detection, avoid scanning in Disk Controller IO!!!!
				bne .2
				
				lda L91C96.BSR+1,x
				cmp #DEVID
				beq .3
				
.2				dec DEV.HEADER.NAME+4
				txa
				sec
				sbc #$10
				tax
				dey
				bne .1
				
				>LDYA L.MSG.DETECT.KO
				>SYSCALL CPrintFYA

				lda #MLI.ERR.NODEV
				sec
				rts
				
.3				stx DEVSLOTx0
				lda #A2osX.SLOTS.NET
				sta A2osX.SLOTS,y

				>LDYA ARGS
				>STYA ZPTmpPTR
				lda (ZPTmpPTR)
				beq .4
				
				sec
				ror USERMAC
				>SYSCALL GetMemPtrA
				>STYA ZPTmpPTR
				jsr DecodeMac
				bcc .4
				lda #DEVMGR.ERRICL
				sec
				rts
				
.4				>PUSHW L.DEV.HEADER.NAME
				>LDYA L.MSG.DETECT.OK
				>SYSCALL CPrintFYA
				clc
				rts
*--------------------------------------
				.INB /A2OSX.SRC/DRV/X.NET.DRV.S
*--------------------------------------
CS.END
MSG.DETECT		>CSTR "LanCeGS/SMSC91C96 Driver.\r\n"
MSG.DETECT.OK	>CSTR "LanCeGS/SMSC91C96 Installed As Device : %S\r\n"
MSG.DETECT.KO	>CSTR "Hardware Not Found.\r\n"
Args			.BS 2
*--------------------------------------
*			Device Header (16 Bytes)
*--------------------------------------
DEV.HEADER		cld
				jmp (DRV.CS.START,x)
				.DA #0
				.BS 6
DEV.HEADER.NAME	>PSTR "ETH7"
*--------------------------------------
*			Driver Code
*--------------------------------------
DRV.CS.START	.DA STATUS
				.DA READBLOCK
				.DA WRITEBLOCK
				.DA A2osX.BADCALL
				.DA A2osX.BADCALL
				.DA A2osX.BADCALL
				.DA OPEN
				.DA CLOSE
				.DA A2osX.BADCALL
				.DA A2osX.BADCALL
L.DEVSTAT		.DA DEVSTAT
				.DA 0					end or relocation
*--------------------------------------
STATUS			lda #S.DEVSTAT.NET.STATUS.10
				sta LINK.STATUS

				ldx DEVSLOTx0

				stz L91C96.BSR,x
				lda L91C96.0.EPHSR,x
				lda L91C96.0.EPHSR+1,x
				and /L91C96.0.EPHSR.LINK
				beq .1
				lda LINK.STATUS
				ora #S.DEVSTAT.NET.STATUS.OK
				sta LINK.STATUS
	
.1				lda L91C96.0.TCR,x
				lda L91C96.0.TCR+1,x
				and /L91C96.0.TCR.FDSE
				bne .2
				lda LINK.STATUS
				ora #S.DEVSTAT.NET.STATUS.FD
				sta LINK.STATUS
				
.2				>LDYA L.DEVSTAT
				clc
				rts
*--------------------------------------
READBLOCK		ldx DEVSLOTx0
				lda #2
				sta L91C96.BSR,x

				lda L91C96.2.IST,x
				and #L91C96.2.IST.RCV
				bne READBLOCK.RxOK
				lda #ERR.DEV.NOFRAME
				sec
				rts
				
READBLOCK.RxOK	lda #L91C96.2.PTR.RCVD+L91C96.2.PTR.AUTOI+L91C96.2.PTR.READ
				sta L91C96.2.PTR,x
				lda /L91C96.2.PTR.RCVD+L91C96.2.PTR.AUTOI+L91C96.2.PTR.READ
				sta L91C96.2.PTR+1,x 

				lda L91C96.2.DATA,x		Get Frame Status Word (lo)
				lda L91C96.2.DATA,x		Get Frame Status Word (HI)
				
				asl
				asl
				asl 					#$10 = odd?
				asl						if odd, CS
				
				lda L91C96.2.DATA,x		get lo byte count
				sbc	#5					compute Size
				sta Size
				eor #$ff
				sta Counter
				tay
				
				lda L91C96.2.DATA,x		get hi byte count
				sbc #0
				sta Size+1
				eor #$ff
				sta Counter+1
				eor #$ff
				
				iny
				bne .1
				
				inc
.1				iny
				bne .11
				
				inc
.11				>SYSCALL GetMemYA
				bcs .99
				>STYA ZPTmpPTR
				stx .8+1
				sty .8+3
				sta .8+5
								
				lda Size
				sta (ZPTmpPTR)
				ldy #1
				lda Size+1
				sta (ZPTmpPTR),y

				iny
				
				ldx DEVSLOTx0
				
.2				inc Counter
				bne .21
				inc Counter+1
				beq .4
				
.21				lda L91C96.2.DATA,x
				sta (ZPTmpPTR),y
				iny
				bne .3
				inc ZPTmpPTR+1
				
.3				inc Counter
				bne .31
				inc Counter+1
				beq .4
				
.31				lda L91C96.2.DATA,x
				sta (ZPTmpPTR),y
				iny
				bne .2
				inc ZPTmpPTR+1
				bra .2

.4				lda #L91C96.2.MMUCR.REMREL
				sta L91C96.2.MMUCR,x
				
.8				ldx	#$ff				hMem
				ldy	#$ff				PtrLO
				lda #$ff				PtrHI
				clc
.99				rts
*--------------------------------------				
WRITEBLOCK		>STYA ZPTmpPTR
				
				ldx DEVSLOTx0
				lda #2
				sta L91C96.BSR,x
			
				lda (ZPTmpPTR)
				sta Size
				eor #$ff
				sta Counter
				eor #$ff
				
				clc
				adc #6					3 WORDs more Status, len & Control

				bne .10
				clc						LO byte is 0, no need for an extra empty page
				
.10				ldy #1
				lda (ZPTmpPTR),y
				sta Size+1
				eor #$ff
				sta Counter+1
				eor #$ff
				
				adc #0
				
.1				ora #L91C96.2.MMUCR.ALLOC
				sta L91C96.2.MMUCR,x

				ldy #0
				
.2				lda L91C96.2.IST,x
				and #L91C96.2.IST.ALLOC
				bne .3
				dey
				bne .2
				
				lda #ERR.DEV.NOBUFFER
				sec
				rts				
				
.3				lda L91C96.2.AAR,x
				sta L91C96.2.PNR,x
				
				lda #L91C96.2.PTR.AUTOI
				sta L91C96.2.PTR,x
				lda /L91C96.2.PTR.AUTOI
				sta L91C96.2.PTR+1,x
				
				ldy #S.ETH.SRCMAC+5		Add Src MAC Address
				ldx #5
.4				lda MAC,x
				sta (ZPTmpPTR),y
				dey
				dex
				bpl .4

				ldx DEVSLOTx0
				stz L91C96.2.DATA,x		write fake status word
				stz L91C96.2.DATA,x
				
				lda Size
				pha
				eor #$01
				lsr
				pla
				adc #$05				add 5 if odd, 6 if even
				sta L91C96.2.DATA,x
				lda Size+1
				adc #$00
				sta L91C96.2.DATA,x
				
				ldy #2
				
.5				inc Counter
				bne .51
				inc Counter+1
				beq .70
				
.51				lda (ZPTmpPTR),y
				iny
				bne .6
				inc ZPTmpPTR+1
				
.6				inc Counter
				bne .61
				inc Counter+1
				beq .71
				
.61				sta L91C96.2.DATA,x
				lda (ZPTmpPTR),y
				sta L91C96.2.DATA,x
				iny
				bne .5
				inc ZPTmpPTR+1
				bra .5
				
.70				lda #0
				sta L91C96.2.DATA,x
				sta L91C96.2.DATA,x
				bra .8
				
.71				sta L91C96.2.DATA,x
				lda #%00100000			signal an extra (odd) byte
				sta L91C96.2.DATA,x
				
.8				lda #L91C96.2.MMUCR.NQPKT
				sta L91C96.2.MMUCR,x 
				clc
				rts
				
.9				sec
				rts
*--------------------------------------
OPEN			jsr CLOSE

				lda #L91C96.0.TCR.FDSE+L91C96.0.TCR.FUDPLX+L91C96.0.TCR.PADEN+L91C96.0.TCR.TXENA
				sta L91C96.0.TCR,x
				lda /L91C96.0.TCR.FDSE+L91C96.0.TCR.FUDPLX+L91C96.0.TCR.PADEN+L91C96.0.TCR.TXENA
				sta L91C96.0.TCR+1,x
				
				lda #L91C96.0.RCR.NOCRC+L91C96.0.RCR.RXENA+L91C96.0.RCR.ALLMUL
				sta L91C96.0.RCR,x
				lda /L91C96.0.RCR.NOCRC+L91C96.0.RCR.RXENA+L91C96.0.RCR.ALLMUL
				sta L91C96.0.RCR+1,x
				
				lda #1
				sta L91C96.BSR,x
				
				lda #L91C96.1.CR.NOWAIT
				sta L91C96.1.CR,x
				lda /L91C96.1.CR.NOWAIT
				sta L91C96.1.CR+1,x

				ldy #0
				bit USERMAC
				bmi .2
	
.1				lda L91C96.1.IAR,x
				sta MAC,y
				inx
				iny
				cpy #6
				bne .1
				bra .3

.2				lda MAC,y
				sta L91C96.1.IAR,x
				inx
				iny
				cpy #6
				bne .2
				
.3				ldx DEVSLOTx0
				lda #L91C96.1.CTR.DEFAULT+L91C96.1.CTR.AUTOREL
				sta L91C96.1.CTR,x
				lda /L91C96.1.CTR.DEFAULT+L91C96.1.CTR.AUTOREL
				sta L91C96.1.CTR+1,x
				
				clc
				rts
*--------------------------------------
CLOSE			ldx DEVSLOTx0
				stz L91C96.BSR,x
				
				lda #L91C96.0.RCR.RESET
				sta L91C96.0.RCR,x
				lda /L91C96.0.RCR.RESET
				sta L91C96.0.RCR+1,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
				
				stz L91C96.0.RCR,x
				stz L91C96.0.RCR+1,x
				
				clc
				rts
*--------------------------------------	
DRV.CS.END
DEVSLOTx0		.BS 1
USERMAC			.BS 1
*--------------------------------------
DEVSTAT			.DA #0
				.BS 3					size
				>PSTR "LanCEGS/L91C96"
				.BS 1
				.DA #S.DEVSTAT.T.NET
				.BS 1					Subtype
				.BS 2					Version
*--------------------------------------	
FLAGS			.DA #0
LINK.STATUS		.BS 1					OK/DUPLEX/SPEED
MAC				.BS 6
*--------------------------------------
MAN
SAVE /A2OSX.SRC/DRV/LANCEGS.DRV.S
ASM