mirror of https://github.com/A2osX/A2osX.git
920 lines
16 KiB
Plaintext
920 lines
16 KiB
Plaintext
NEW
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AUTO 3,1
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.LIST OFF
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.OP 65C02
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.OR $2000
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.TF drv/uther2.ai.drv
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*--------------------------------------
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.INB inc/macros.i
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.INB inc/a2osx.i
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.INB inc/kernel.i
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.INB inc/mli.e.i
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.INB inc/nic.i
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.INB inc/nic.w5100.i
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.INB inc/eth.i
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.INB inc/net.tcpip.i
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.INB inc/libtcpip.i
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*--------------------------------------
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ZPArgPtr .EQ ZPBIN
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DEVSLOT0x .EQ ZPBIN+2
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*--------------------------------------
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* File Header (16 Bytes)
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*--------------------------------------
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CS.START cld
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jmp Dev.Detect cld,jmp abs=DRV
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.DA #$61 6502,Level 1 (65c02)
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.DA #1 DRV Layout Version 1
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.DA 0
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.DA CS.END-CS.START Code Length
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.DA 0
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.DA 0
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.DA 0
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*--------------------------------------
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* Relocation Table
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*--------------------------------------
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L.MSG.DETECT .DA MSG.DETECT
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L.MSG.DETECT.OK .DA MSG.DETECT.OK
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L.MSG.DETECT.KO .DA MSG.DETECT.KO
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L.DRV.CS.START .DA DRV.CS.START
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L.FD.DEV .DA FD.DEV
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L.FD.DEV.NAME .DA FD.DEV.NAME
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L.SSCANF.MAC .DA SSCANF.MAC
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L.MAC0 .DA DCB+S.DCB.NIC.MAC
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L.MAC1 .DA DCB+S.DCB.NIC.MAC+1
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L.MAC2 .DA DCB+S.DCB.NIC.MAC+2
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L.MAC3 .DA DCB+S.DCB.NIC.MAC+3
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L.MAC4 .DA DCB+S.DCB.NIC.MAC+4
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L.MAC5 .DA DCB+S.DCB.NIC.MAC+5
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.DA 0 End Of Reloc Table
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*--------------------------------------
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Dev.Detect >STYA ZPArgPtr
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>LDYA L.MSG.DETECT
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>SYSCALL PutS
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ldx #$70+$88
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ldy #7
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.1 lda A2osX.S-1,y IO based detection, avoid scanning in Disk Controller IO!!!!
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bne .2
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lda #W5100.MR.RST
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sta W5100.MR,x
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lda #0
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.10 dec give some time....
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bne .10
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lda #W5100.MR.PB+W5100.MR.AI+W5100.MR.IND
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sta W5100.MR,x
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pha
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pla
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lda W5100.MR,x
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cmp #W5100.MR.PB+W5100.MR.AI+W5100.MR.IND
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bne .2
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>AR.SELECT RTR
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lda W5100.DR,x Get RTR HI
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cmp /2000
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bne .2
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lda W5100.DR,x Get RTR LO
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cmp #2000
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beq .3
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.2 dec FD.DEV.NAME+3
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txa
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sec
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sbc #$10
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tax
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dey
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bne .1
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>LDYA L.MSG.DETECT.KO
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>SYSCALL PutS
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lda #MLI.E.NODEV
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sec
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rts
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.3 stx DEVSLOTx0
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sty DEVSLOT0x
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jsr Dev.ParseArgs
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bcs .99
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>PUSHW L.MSG.DETECT.OK
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>PUSHW L.FD.DEV.NAME
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>PUSHBI 2
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>SYSCALL PrintF
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>PUSHWI DRV.END
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>PUSHWI DRV.CS.END-DRV.CS.START
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>PUSHWI DRV.CS.START
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>LDYA L.DRV.CS.START
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>SYSCALL InsDrv
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.99 bcs .9
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>STYA FD.DEV+S.FD.DEV.DRVPTR
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>PUSHW L.FD.DEV
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>PUSHW L.FD.DEV.NAME
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>SYSCALL MKDev
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bcs .9
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ldx DEVSLOT0x
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lda #A2osX.S.NIC
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sta A2osX.S-1,x
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* clc
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.9 rts
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*--------------------------------------
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Dev.ParseArgs lda (ZPArgPtr)
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bne .1
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lda A2osX.R16
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eor A2osX.T16
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sta DCB+S.DCB.NIC.MAC+3
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eor A2osX.R16+1
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sta DCB+S.DCB.NIC.MAC+4
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eor A2osX.T16+1
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sta DCB+S.DCB.NIC.MAC+5
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clc
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rts
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.1 >PUSHW ZPArgPtr
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>PUSHW L.SSCANF.MAC
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ldx #0
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.2 >PUSHW L.MAC0,x
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inx
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inx
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cpx #12
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bne .2
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>PUSHBI 12 6 x byte PTRs
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>SYSCALL SScanF
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bcc .8
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lda #E.SYN
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* sec
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.8 rts
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*--------------------------------------
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CS.END
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ARGS .BS 2
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MSG.DETECT .CZ "UtherNet2/W5100 Driver (ARP/IP Offload)."
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MSG.DETECT.OK .CZ "UtherNet2/W5100 Installed As Device : %s\r\n"
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MSG.DETECT.KO .CZ "Hardware Not Found."
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SSCANF.MAC .CZ "%h:%h:%h:%h:%h:%h"
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*--------------------------------------
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FD.DEV .DA #S.FD.T.CDEV
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.DA #0 HANDLER
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.DA #0 BUSID
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.DA #0 DEVID
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.DA 0 BUSPTR
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.BS 2 DRVPTR
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.DA 0 DCBPTR
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.DA 0 BUFPTR
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FD.DEV.NAME .AZ "eth7"
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*--------------------------------------
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* Driver Code
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*--------------------------------------
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ZPIOCTL .EQ ZPDRV
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ZPBufPtr .EQ ZPDRV+2
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Counter .EQ ZPDRV+4
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Offset .EQ ZPDRV+6
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RXTX.Size .EQ ZPDRV+8
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BUF.Size .EQ ZPDRV+10
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RX.IP .EQ ZPDRV+12 (4)
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Sn.IO .EQ ZPDRV+16
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Sn.BASE .EQ ZPDRV+17
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Sn.MASK .EQ ZPDRV+18
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*--------------------------------------
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DRV.CS.START cld
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jmp (.1,x)
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.1 .DA STATUS
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.DA A2osX.BADCALL
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.DA A2osX.BADCALL
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.DA A2osX.BADCALL
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.DA CONTROL
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.DA A2osX.BADCALL
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.DA OPEN
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.DA CLOSE
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.DA READ
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.DA WRITE
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.DA 0 end or relocation
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*--------------------------------------
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STATUS jsr GET.IOCTLBUFPTR
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ldy #S.IOCTL.S
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lda (ZPIOCTL),y
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beq .1
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cmp #S.IOCTL.S.GETDIB
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bne STATUS.DCB
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ldy #S.DIB-1
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.HS 2C bit abs
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.1 ldy #3
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.2 lda DIB,y
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sta (ZPBufPtr),y
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dey
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bpl .2
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clc
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rts
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STATUS.DCB cmp #S.IOCTL.S.GETDCB
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bne STATUS.9
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ldy #S.DCB.NIC-1
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.1 lda DCB,y
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sta (ZPBufPtr),y
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dey
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bpl .1
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clc
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rts
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STATUS.9 lda #MLI.E.BADCTL
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sec
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rts
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*--------------------------------------
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CONTROL jsr GET.IOCTLBUFPTR
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ldy #S.IOCTL.C
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lda (ZPIOCTL),y
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cmp #S.IOCTL.C.SETDCB
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bne STATUS.9
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ldy #S.DCB.NIC-1
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.2 lda (ZPBufPtr),y
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sta DCB,y
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dey
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bpl .2
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bra OPEN.I
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*--------------------------------------
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OPEN lda #S.DIB.S.OPENED
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bit DIB+S.DIB.S
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beq OPEN.I
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lda #MLI.E.OPEN
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sec
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rts
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OPEN.I jsr CLOSE
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* ldx DEVSLOTx0 Done by CLOSE
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lda #W5100.MR.PB+W5100.MR.AI+W5100.MR.IND
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sta W5100.MR,x
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>AR.SELECT SHAR
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ldy #0
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.1 lda DCB+S.DCB.NIC.MAC,y
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sta W5100.DR,x
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iny
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cpy #6
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bne .1
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>AR.SELECT GAR
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ldy #0
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.2 lda DCB+S.DCB.NIC.GW,y
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sta W5100.DR,x
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iny
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cpy #4
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bne .2
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>AR.SELECT SUBR Implicit, next to GAR
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ldy #0
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.3 lda DCB+S.DCB.NIC.MASK,y
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sta W5100.DR,x
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iny
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cpy #4
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bne .3
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>AR.SELECT SIPR
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ldy #0
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.4 lda DCB+S.DCB.NIC.IP,y
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sta W5100.DR,x
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iny
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cpy #4
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bne .4
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>AR.SELECT RMSR
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lda #%01010101 RAW=2k,ICMP=2k,UDP=2k,TCP=2k
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sta W5100.DR,x ...for Socket RX Buffers
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sta W5100.DR,x ...for Socket TX Buffers
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>AR.SELECT S0.MR
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lda #W5100.AR.Sn.MR.MACRAW+W5100.AR.Sn.MR.MF
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sta W5100.DR,x
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>AR.SELECT S0.CR
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lda #W5100.AR.Sn.CR.OPEN
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sta W5100.DR,x
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*--------------------------------------
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lda /W5100.AR.S1.MR
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sta Sn.IO
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ldy #S.IP.PROTOCOL.ICMP
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jsr OPEN.SnY
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inc Sn.IO
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ldy #S.IP.PROTOCOL.TCP
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jsr OPEN.SnY
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inc Sn.IO
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ldy #S.IP.PROTOCOL.UDP
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jsr OPEN.SnY
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lda #S.DIB.S.OPENED
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tsb DIB+S.DIB.S
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clc
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rts
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*--------------------------------------
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OPEN.SnY phy
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>AR.Sn.SELECT S0.MR
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lda #W5100.AR.Sn.MR.IPRAW
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sta W5100.DR,x
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>AR.Sn.SELECT S0.PORT
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stz W5100.DR,x
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stz W5100.DR,x
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* >AR.Sn.SELECT S0.DHAR
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* ldy #6 DHAR
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* lda #$EE
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*.1 sta W5100.DR,x
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* dey
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* bne .1
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* >AR.Sn.SELECT S0.DIPR
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* ldy #4 DIPR
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*.2 stz W5100.DR,x
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* dey
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* bne .2
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>AR.Sn.SELECT S0.DPORT
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stz W5100.DR,x
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stz W5100.DR,x
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>AR.Sn.SELECT S0.MSSR
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lda /K.ETH.FRAME.LEN
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sta W5100.DR,x
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lda #K.ETH.FRAME.LEN
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sta W5100.DR,x
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>AR.Sn.SELECT S0.PROTO
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pla
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sta W5100.DR,x
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>AR.Sn.SELECT S0.TOS
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stz W5100.DR,x
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>AR.Sn.SELECT S0.TTL
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lda #K.IP.TTL
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sta W5100.DR,x
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>AR.Sn.SELECT S0.CR
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lda #W5100.AR.Sn.CR.OPEN
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sta W5100.DR,x
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rts
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*--------------------------------------
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CLOSE ldx DEVSLOTx0
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lda #W5100.MR.RST
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sta W5100.MR,x
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lda $C019 we can use VBL as we are not on //c
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.1 eor $C019
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bpl .1
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lda $C019
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.2 eor $C019
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bpl .2
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lda #S.DIB.S.OPENED
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trb DIB+S.DIB.S
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clc
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rts
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*--------------------------------------
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READ php
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sei
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>STYA ZPIOCTL
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ldx DEVSLOTx0
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ldy #Sn.Cnt-1
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.1 lda Sn.IO.BASE,y
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sta Sn.IO
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sta W5100.AR,x
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lda #W5100.AR.S0.RX.RSR
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sta W5100.AR+1,x
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lda W5100.DR,x get the received size HI
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ora W5100.DR,x LO
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beq .2
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jmp READ.IPRAW
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.2 dey
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bne .1
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lda /W5100.AR.S0.RX.RSR
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sta W5100.AR,x
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lda #W5100.AR.S0.RX.RSR
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sta W5100.AR+1,x
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lda W5100.DR,x get the received size HI
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ora W5100.DR,x LO
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bne READ.RAW
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.9 jmp READWRITE.NODATA
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*--------------------------------------
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READ.RAW >AR.SELECT S0.RX.RD
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lda W5100.DR,x get the received ptr HI
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sta Offset+1
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ldy W5100.DR,x get the received ptr LO
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sty Offset
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and /$7FF
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ora /RX.BASE
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sta W5100.AR,x
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tya
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sta W5100.AR+1,x
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lda W5100.DR,x get RX.Size HI (Frame size + 2)
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sta RXTX.Size+1
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lda W5100.DR,x get RX.Size LO
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sta RXTX.Size
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ldy #S.IOCTL.BYTECNT
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sec
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sbc #2 MACRAW:strip 2 bytes Header from Size
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sta (ZPIOCTL),y
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sta BUF.Size
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eor #$ff
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sta Counter
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lda RXTX.Size+1
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sbc #0
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iny
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sta (ZPIOCTL),y
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sta BUF.Size+1
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eor #$ff
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sta Counter+1
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>LDYA BUF.Size
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>SYSCALL2 GetMem
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bcc .14
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jmp READWRITE.9
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.14 >STYA ZPBufPtr
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phx
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phy
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ldy #S.IOCTL.BUFPTR+1
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sta (ZPIOCTL),y
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dey
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pla
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sta (ZPIOCTL),y
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ldy #0
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ldx DEVSLOTx0
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.2 inc Counter
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bne .3
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inc Counter+1
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beq .4
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.3 lda W5100.DR,x
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sta (ZPBufPtr),y
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iny
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bne .2
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inc ZPBufPtr+1
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bra .2
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.4 >AR.SELECT S0.RX.RD
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lda Offset
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clc
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adc RXTX.Size
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pha save LO
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lda Offset+1
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adc RXTX.Size+1
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sta W5100.DR,x write HI
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pla
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sta W5100.DR,x write LO
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>AR.SELECT S0.CR
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lda #W5100.AR.Sn.CR.RCVD
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sta W5100.DR,x
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pla hMem
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plp
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clc
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rts
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*--------------------------------------
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READ.IPRAW lda Sn.IP.PROTOCOL,y
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sta FRM.HDR.PROTO
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lda Sn.RX.BASE,y
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sta Sn.BASE
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lda Sn.RXTX.MASK,y
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sta Sn.MASK
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>AR.Sn.SELECT S0.RX.RD
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lda W5100.DR,x get the received ptr HI
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sta Offset+1
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ldy W5100.DR,x get the received ptr LO
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sty Offset
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and Sn.MASK
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ora Sn.BASE
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sta W5100.AR,x
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tya
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sta W5100.AR+1,x
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ldy #0
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.10 lda W5100.DR,x IPRAW:Get Source IP
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sta RX.IP,y
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iny
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cpy #4
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bne .10
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lda W5100.DR,x get RX.Size HI (not including 6 bytes Header)
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sta RXTX.Size+1
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eor #$ff
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sta Counter+1
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lda W5100.DR,x get RX.Size LO
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sta RXTX.Size
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eor #$ff
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sta Counter
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eor #$ff
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clc
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adc #S.IP
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sta BUF.Size
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ldy #S.IOCTL.BYTECNT
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sta (ZPIOCTL),y
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|
||
lda RXTX.Size+1
|
||
adc /S.IP
|
||
sta BUF.Size+1
|
||
iny
|
||
sta (ZPIOCTL),y
|
||
|
||
lda RXTX.Size
|
||
clc
|
||
adc #6 IPRAW: Add 6 bytes to Total Size
|
||
sta RXTX.Size
|
||
bcc .11
|
||
|
||
inc RXTX.Size+1
|
||
|
||
.11 lda RXTX.Size
|
||
clc
|
||
adc #S.IP-S.ETH.EII
|
||
sta FRM.HDR.IPLEN+1
|
||
|
||
lda RXTX.Size+1
|
||
adc /S.IP-S.ETH.EII
|
||
sta FRM.HDR.IPLEN
|
||
|
||
>LDYA BUF.Size
|
||
>SYSCALL2 GetMem
|
||
bcc .14
|
||
|
||
jmp READWRITE.9
|
||
|
||
.14 >STYA ZPBufPtr
|
||
phx
|
||
|
||
phy
|
||
ldy #S.IOCTL.BUFPTR+1
|
||
sta (ZPIOCTL),y
|
||
dey
|
||
pla
|
||
sta (ZPIOCTL),y
|
||
|
||
ldy #S.ETH.EII.TYPE
|
||
|
||
.15 lda FRM.HDR-S.ETH.EII.TYPE,y
|
||
sta (ZPBufPtr),y
|
||
iny
|
||
cpy #S.ETH.EII.TYPE+FRM.HDR.LEN
|
||
bne .15
|
||
|
||
ldx #3
|
||
ldy #S.IP.SRC+3
|
||
|
||
.12 lda RX.IP,x
|
||
sta (ZPBufPtr),y
|
||
dey
|
||
dex
|
||
bpl .12
|
||
|
||
ldx #3
|
||
ldy #S.IP.DST+3
|
||
|
||
.13 lda DCB+S.DCB.NIC.IP,x
|
||
sta (ZPBufPtr),y
|
||
dey
|
||
dex
|
||
bpl .13
|
||
|
||
ldy #S.IP
|
||
|
||
ldx DEVSLOTx0
|
||
|
||
.2 inc Counter
|
||
bne .3
|
||
|
||
inc Counter+1
|
||
beq .4
|
||
|
||
.3 lda W5100.DR,x
|
||
sta (ZPBufPtr),y
|
||
iny
|
||
bne .2
|
||
|
||
inc ZPBufPtr+1
|
||
bra .2
|
||
|
||
.4 >AR.Sn.SELECT S0.RX.RD
|
||
|
||
lda Offset
|
||
clc
|
||
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.Sn.SELECT S0.CR
|
||
lda #W5100.AR.Sn.CR.RCVD
|
||
sta W5100.DR,x
|
||
|
||
pla hMem
|
||
|
||
plp
|
||
clc
|
||
rts
|
||
*--------------------------------------
|
||
READWRITE.NODATA
|
||
lda #E.NODATA
|
||
|
||
READWRITE.9 plp
|
||
sec
|
||
rts
|
||
*--------------------------------------
|
||
WRITE php
|
||
sei
|
||
|
||
jsr GET.IOCTLBUFPTR
|
||
|
||
ldy #S.IOCTL.BYTECNT
|
||
lda (ZPIOCTL),y
|
||
|
||
sec
|
||
sbc #S.IP
|
||
|
||
sta RXTX.Size
|
||
eor #$ff
|
||
sta Counter
|
||
|
||
iny
|
||
lda (ZPIOCTL),y
|
||
|
||
sbc /S.IP
|
||
|
||
sta RXTX.Size+1
|
||
eor #$ff
|
||
sta Counter+1
|
||
|
||
ldy #S.IP.PROTOCOL
|
||
lda (ZPBufPtr),y
|
||
|
||
ldy #Sn.cnt-1
|
||
|
||
.10 cmp Sn.IP.PROTOCOL,y
|
||
beq .11
|
||
|
||
dey
|
||
bne .10
|
||
|
||
plp
|
||
lda #MLI.E.IO
|
||
sec
|
||
rts
|
||
|
||
.11 lda Sn.IO.BASE,y
|
||
sta Sn.IO
|
||
* ora #$30
|
||
* sta $426
|
||
lda Sn.TX.BASE,y
|
||
sta Sn.BASE
|
||
lda Sn.RXTX.MASK,y
|
||
sta Sn.MASK
|
||
|
||
ldx DEVSLOTx0
|
||
|
||
ldy #S.IP.DST
|
||
lda (ZPBufPtr),y
|
||
beq .12
|
||
|
||
cmp #$ff
|
||
bne .13
|
||
|
||
.12
|
||
* >AR.Sn.SELECT S0.DHAR
|
||
|
||
* ldy #6
|
||
* lda #$ff
|
||
|
||
*.20 sta W5100.DR,x
|
||
* dey
|
||
* bne .20
|
||
|
||
>AR.Sn.SELECT S0.DIPR
|
||
|
||
* lda #$ff
|
||
* ldy #3
|
||
|
||
*.21 sta W5100.DR,x
|
||
* dey
|
||
* bpl .21
|
||
|
||
lda #255
|
||
sta W5100.DR,x
|
||
lda #255
|
||
sta W5100.DR,x
|
||
lda #255
|
||
sta W5100.DR,x
|
||
lda #255
|
||
sta W5100.DR,x
|
||
|
||
bra .14
|
||
|
||
.13 >AR.Sn.SELECT S0.DIPR
|
||
|
||
ldy #S.IP.DST
|
||
|
||
.1 lda (ZPBufPtr),y
|
||
sta W5100.DR,x
|
||
iny
|
||
cpy #S.IP.DST+4
|
||
bne .1
|
||
|
||
.14 >AR.Sn.SELECT S0.TX.FSR
|
||
lda W5100.DR,x get send size HI
|
||
ldy W5100.DR,x LO
|
||
cpy RXTX.Size
|
||
sbc RXTX.Size+1
|
||
bcc .9
|
||
|
||
>AR.Sn.SELECT S0.TX.WR
|
||
lda W5100.DR,x Get HI
|
||
ldy W5100.DR,x Get LO
|
||
and Sn.MASK
|
||
ora Sn.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 (ZPBufPtr),y
|
||
sta W5100.DR,x
|
||
iny
|
||
bne .2
|
||
|
||
inc ZPBufPtr+1
|
||
bra .2
|
||
|
||
.8 >AR.Sn.SELECT S0.TX.WR
|
||
lda Offset
|
||
clc
|
||
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.Sn.SELECT S0.CR
|
||
lda #W5100.AR.Sn.CR.SEND
|
||
sta W5100.DR,x
|
||
|
||
plp
|
||
clc
|
||
rts
|
||
|
||
.9 lda #E.NODATA
|
||
|
||
plp
|
||
sec
|
||
rts
|
||
*--------------------------------------
|
||
GET.IOCTLBUFPTR >STYA ZPIOCTL
|
||
ldy #S.IOCTL.BUFPTR
|
||
lda (ZPIOCTL),y
|
||
sta ZPBufPtr
|
||
iny
|
||
lda (ZPIOCTL),y
|
||
sta ZPBufPtr+1
|
||
rts
|
||
*--------------------------------------
|
||
DRV.CS.END
|
||
Sn.cnt .EQ 4
|
||
Sn.IP.PROTOCOL .DA #0,#S.IP.PROTOCOL.ICMP,#S.IP.PROTOCOL.TCP,#S.IP.PROTOCOL.UDP
|
||
Sn.IO.BASE .DA /W5100.AR.S0.MR,/W5100.AR.S1.MR,/W5100.AR.S2.MR,/W5100.AR.S3.MR
|
||
Sn.TX.BASE .DA /TX.BASE,/TX.BASE+$800,/TX.BASE+$1000,/TX.BASE+$1800
|
||
Sn.RX.BASE .DA /RX.BASE,/RX.BASE+$800,/RX.BASE+$1000,/RX.BASE+$1800
|
||
Sn.RXTX.MASK .DA /$7FF,/$7FF,/$7FF,/$7FF
|
||
DEVSLOTx0 .BS 1
|
||
*--------------------------------------
|
||
DIB .DA #0
|
||
.DA #0,#0,#0 size
|
||
.PS "UtherNetII/W5100"
|
||
.DA #S.DIB.T.NIC
|
||
.BS 1 Subtype
|
||
.DA K.VER Version
|
||
*--------------------------------------
|
||
DCB .DA #S.DCB.T.NIC
|
||
.DA #S.DCB.NIC.FLAGS.ARPOFFLOAD+S.DCB.NIC.FLAGS.IPOFFLOAD
|
||
.DA #S.DCB.NIC.LINK.OK+S.DCB.NIC.LINK.FD
|
||
.DA #S.DCB.NIC.SPEED.100
|
||
.HS 0008DC123456 MAC
|
||
.DA #0,#0,#0,#0 IP
|
||
.DA #0,#0,#0,#0 MASK
|
||
.DA #255,#255,#255,#255 GW
|
||
*--------------------------------------
|
||
FRM.HDR .HS 0800 S.ETH.EII.TYPE
|
||
.HS 4500
|
||
FRM.HDR.IPLEN .BS 2 TOTAL LEN
|
||
.DA 0 ID
|
||
.DA 0 FLAGS
|
||
.DA #64 TTL
|
||
FRM.HDR.PROTO .BS 1 IP.PROTO
|
||
.DA 0 CHECKSUM
|
||
FRM.HDR.LEN .EQ *-FRM.HDR
|
||
*FRM.HDR.SRC .BS 4 IP.SRC
|
||
* .BS 4 IP.DST
|
||
*--------------------------------------
|
||
DRV.END
|
||
MAN
|
||
SAVE usr/src/drv/uther2.ai.drv.s
|
||
ASM
|