A2osX/SBIN/DHCPCLNT.S.txt

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NEW
PREFIX /A2OSX.BUILD
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AUTO 4,1
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.LIST OFF
.OP 65C02
.OR $2000
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.TF SBIN/DHCPCLNT
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*--------------------------------------
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.INB INC/MACROS.I
.INB INC/A2OSX.I
.INB INC/ETH.I
.INB INC/LIBTCPIP.I
.INB INC/NET.DHCP.I
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*--------------------------------------
TIMEOUT.MAX .EQ 200 20 sec.
*--------------------------------------
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ZPIPCfgPtr .EQ ZPBIN
ZPFrameBase .EQ ZPBIN+2
ZPFramePtr .EQ ZPBIN+4
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*--------------------------------------
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* File Header (16 Bytes)
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*--------------------------------------
CS.START cld
jmp (.1,x)
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.DA #$61 6502,Level 1 (65c02)
.DA #1 BIN Layout Version 1
.DA 0
.DA CS.END-CS.START CS
.DA DS.END-DS.START DS
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.DA #64 SS
.DA #6 ZP
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.DA 0
*--------------------------------------
* Relocation Table
*--------------------------------------
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.1 .DA CS.INIT
.DA CS.RUN
.DA CS.DOEVENT
.DA CS.QUIT
L.LIBTCPIP .DA LIBTCPIP
L.IPCFG .DA IPCFG
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L.Socket .DA Socket
L.MSG.CFG1 .DA MSG.CFG1
L.MSG.CFG2 .DA MSG.CFG2
L.MSG.CFG.KO .DA MSG.CFG.KO
L.MSG.CFG.OK .DA MSG.CFG.OK
L.MSG.CFG.ND .DA MSG.CFG.ND
L.MSG.CFG.NA .DA MSG.CFG.NA
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L.DHCP.DISC .DA DHCP.DISC
L.DHCP.REQ .DA DHCP.REQ
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.DA 0
*--------------------------------------
CS.INIT >LDYA L.LIBTCPIP
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>SYSCALL LoadLib
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sta hLIBTCPIP
>LIBCALL hLIBTCPIP,LIBTCPIP.GET.IPCFG
bcs .9
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>STYA ZPIPCfgPtr
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lda (ZPIPCfgPtr)
and #S.IPCFG.STATUS.OK
bne .99 Already Configured, exit
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ldy #S.IPCFG.hFD
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lda (ZPIPCfgPtr),y
beq .98
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ldy #S.IPCFG-1
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.1 lda (ZPIPCfgPtr),y
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sta IPCFG,y
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dey
bne .1
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stz IPCFG+S.IPCFG.STATUS
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ldx #3
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.11 lda A2osX.TIMER16,x
sta DHCP.DISC.XID,x
sta DHCP.REQ.XID,x
dex
bpl .11
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ldx #5
.2 lda IPCFG+S.IPCFG.MAC,x
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sta DHCP.DISC.CHADDR,x
sta DHCP.REQ.CHADDR,x
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dex
bpl .2
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lda (pPs)
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ora #S.PS.F.EVENT Now accept events
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sta (pPs)
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clc
.9 rts
.98 >LDYA L.MSG.CFG.ND
bra .90
.99 >LDYA L.MSG.CFG.NA
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.90 >SYSCALL puts
lda #0
sec
rts
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*--------------------------------------
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CS.RUN >PUSHW L.Socket
>LIBCALL hLIBTCPIP,LIBTCPIP.SKT.New
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bcc .1
jmp CS.RUN.KO
.1 txa
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>STA.G hSocket
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>LDYA L.MSG.CFG1
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>SYSCALL puts
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jsr Init.Timeout
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CS.RUN.SDISC >PUSHB.G hSocket
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>PUSHW L.DHCP.DISC
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>PUSHWI DHCP.DISC.LEN
>LIBCALL hLIBTCPIP,LIBTCPIP.SKT.Write
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bcc .1
jmp CS.RUN.KO
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.1 lda #S.IPCFG.STATUS.SDISC
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sta IPCFG
CS.RUN.ROFFER >SLEEP
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jsr CS.RUN.SKT.RCVD
bcc .1
jsr Wait.Timeout
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bne CS.RUN.ROFFER
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lda #1
jmp CS.RUN.KO
.1 jsr CheckDHCPOffer
bcs CS.RUN.ROFFER
lda #S.IPCFG.STATUS.ROFFER
sta IPCFG
CS.RUN.SREQ ldx #3
.1 >PUSHB IPCFG+S.IPCFG.DHCPSRVR,x
dex
bpl .1
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>PUSHBI 4
>LDYA L.MSG.CFG2
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>SYSCALL printf
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>PUSHB.G hSocket
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>PUSHW L.DHCP.REQ
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>PUSHWI DHCP.REQ.LEN
>LIBCALL hLIBTCPIP,LIBTCPIP.SKT.Write
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bcs CS.RUN.KO
lda #S.IPCFG.STATUS.SREQ
sta IPCFG
CS.RUN.RACK >SLEEP
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jsr CS.RUN.SKT.RCVD
bcc .1
jsr Wait.Timeout
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bne CS.RUN.RACK
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lda #2
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bra CS.RUN.KO
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.1 jsr CheckDHCPAck
bcs CS.RUN.RACK
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CS.RUN.OK lda #S.IPCFG.STATUS.OK
sta IPCFG
>PUSHW L.IPCFG
>LIBCALL hLIBTCPIP,LIBTCPIP.SET.IPCFG
ldx #3
.1 lda IPCFG+S.IPCFG.MASK,x
>PUSHA
dex
bpl .1
ldx #3
.2 lda IPCFG+S.IPCFG.IP,x
>PUSHA
dex
bpl .2
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>PUSHBI 8
>LDYA L.MSG.CFG.OK
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>SYSCALL printf
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lda #0 Leave with NO ERROR
sec
rts
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CS.RUN.KO pha
>PUSHA
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>PUSHBI 1
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>LDYA L.MSG.CFG.KO
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>SYSCALL printf
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pla
sec
rts
*--------------------------------------
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CS.RUN.SKT.RCVD >LDA.G hSocket
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>LIBCALL hLIBTCPIP,LIBTCPIP.SKT.ReadFrame
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bcs .9
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>STA.G hFrame
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>SYSCALL GetMemPtr
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>STYA ZPFrameBase
.9 rts
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*--------------------------------------
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CS.DOEVENT lda (pEvent)
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bpl .9 is it a TIMER event?
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ldy #TimeOut
lda (pData),y
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beq .9
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dec
sta (pData),y
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.9 sec do not discard TIMER event
rts
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*--------------------------------------
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CS.QUIT >LDA.G hSocket
beq .1
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>LIBCALL hLIBTCPIP,LIBTCPIP.SKT.Close
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.1 lda hLIBTCPIP
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>SYSCALL UnloadLib
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clc
rts
*--------------------------------------
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CheckDHCPOffer jsr CheckDHCPXID
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bcs .9
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lda ZPFrameBase
clc
adc #S.DHCP.OPTIONS
sta ZPFramePtr
lda ZPFrameBase+1
adc /S.DHCP.OPTIONS
sta ZPFramePtr+1
lda (ZPFramePtr)
cmp #S.DHCP.OPTIONS.MSGTYPE
bne .9
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ldy #2
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lda (ZPFramePtr),y
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cmp #S.DHCP.OPTIONS.DHCPOffer
bne .9
ldy #S.DHCP.GIADDR+3
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ldx #3
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.1 lda (ZPFrameBase),y
sta DHCP.REQ.GIADDR,x
dey
dex
bpl .1
ldy #S.DHCP.YIADDR+3
ldx #3
.2 lda (ZPFrameBase),y
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sta DHCP.REQ.OPT.REQIP,x
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sta IPCFG+S.IPCFG.IP,x
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dey
dex
bpl .2
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ldy #S.IP.SRC+3
ldx #3
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.3 lda (ZPFrameBase),y
sta DHCP.REQ.OPT.SVRIP,x
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sta IPCFG+S.IPCFG.DHCPSRVR,x
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dey
dex
bpl .3
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.5 inc ZPFramePtr skip Option 53 (DHCPOffer:530102)
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bne .6
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inc ZPFramePtr+1
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.6 lda (ZPFramePtr)
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sec
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adc ZPFramePtr add option len + 1
sta ZPFramePtr
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bcc .7
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inc ZPFramePtr+1
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.7 lda (ZPFramePtr)
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cmp #S.DHCP.OPTIONS.END
beq .8
jsr GetDHCPOption
bra .5
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.8 jsr CS.RUN.DISCARD
clc
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rts
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.9 jsr CS.RUN.DISCARD
sec
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rts
*--------------------------------------
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CS.RUN.DISCARD >LDA.G hFrame
>SYSCALL FreeMem
rts
*--------------------------------------
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GetDHCPOption cmp #S.DHCP.OPTIONS.MASK
bne .1
ldx #S.IPCFG.MASK
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bra GetDHCPOption.CopyIP
.1 cmp #S.DHCP.OPTIONS.GW
bne .2
ldx #S.IPCFG.GW
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bra GetDHCPOption.CopyIP
.2 cmp #S.DHCP.OPTIONS.DNS
bne .3
ldx #S.IPCFG.DNS1
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bra GetDHCPOption.CopyIP
.3 cmp #S.DHCP.OPTIONS.DOMAIN
bne .9
ldy #1
lda (ZPFramePtr),y Get String len
cmp #80
bcc .4
lda #79
.4 sta IPCFG+S.IPCFG.DOMAIN store len
tax
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.5 iny
lda (ZPFramePtr),y
sta IPCFG+S.IPCFG.DOMAIN-1,y
dex
bne .5
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.9 rts
*--------------------------------------
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GetDHCPOption.CopyIP
ldy #1
lda (ZPFramePtr),y Get Byte count
cmp #9
bcc .1
lda #8 max 8 bytes (2 DNS)
.1 iny
.2 pha
lda (ZPFramePtr),y
sta IPCFG,x
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iny
inx
pla
dec
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bne .2
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rts
*--------------------------------------
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CheckDHCPAck jsr CheckDHCPXID
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bcs .9
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lda ZPFrameBase
clc
adc #S.DHCP.OPTIONS
sta ZPFramePtr
lda ZPFrameBase+1
adc /S.DHCP.OPTIONS
sta ZPFramePtr+1
lda (ZPFramePtr)
cmp #S.DHCP.OPTIONS.MSGTYPE
bne .9
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ldy #2
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lda (ZPFramePtr),y
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cmp #S.DHCP.OPTIONS.DHCPAck
bne .9
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jsr CS.RUN.DISCARD
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clc
rts
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.9 jsr CS.RUN.DISCARD
sec
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rts
*--------------------------------------
CheckDHCPXID ldy #S.DHCP.XID+3
ldx #3
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.1 lda (ZPFrameBase),y
cmp DHCP.DISC.XID,x same XID ?
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bne .9
dey
dex
bpl .1
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clc
rts
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.9 sec
rts
*--------------------------------------
Init.Timeout ldy #TimeOut
lda #TIMEOUT.MAX
sta (pData),y
rts
*--------------------------------------
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Wait.TimeOut ldy #TimeOut
lda (pData),y
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rts
*--------------------------------------
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CS.END
LIBTCPIP .AZ "libtcpip.o"
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MSG.CFG1 .AZ "DHCPCLNT:Searching for DHCP servers..."
MSG.CFG2 .AZ "DHCPCLNT:Reply from DHCP Server at %d.%d.%d.%d, requesting...\r\n"
MSG.CFG.KO .AZ "DHCPCLNT:Time Out [%h].\r\n"
MSG.CFG.OK .AZ "DHCPCLNT:Success:[IP=%d.%d.%d.%d/%d.%d.%d.%d]\r\n"
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MSG.CFG.ND .AZ "DHCPCLNT:No Device, exiting."
MSG.CFG.NA .AZ "DHCPCLNT:TCPIP Already configured, exiting."
hLIBTCPIP .BS 1
IPCFG .BS S.IPCFG
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*--------------------------------------
Socket .DA #S.SOCKET.SOCK.DGRAM
.BS 3
.HS 00.00.00.00 Socket.Src.Addr
.DA UDP.PORT.DHCPC Socket.Src.Port
.HS FF.FF.FF.FF Socket.Dst.Addr
.DA UDP.PORT.DHCPS Socket.Dst.Port
*--------------------------------------
DHCP.DISC .HS 01010600 OP,HTYPE,HLEN,HOPS
DHCP.DISC.XID .BS 4
.HS 0000 SECS
.DA S.DHCP.FLAGS.BRDCST
.HS 00000000 CIADDR
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DHCP.DISC.YIADDR .HS 00000000
.HS 00000000 SIADDR
DHCP.DISC.GIADDR .HS 00000000
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DHCP.DISC.CHADDR .HS 00000000.00000000.00000000.00000000
.BS 64 SNAME
.BS 128 FILE
.HS 63825363 COOKIE
.HS 3501 OPT
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.DA #S.DHCP.OPTIONS.DHCPDiscover
.HS 37040103060FFF
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DHCP.DISC.LEN .EQ *-DHCP.DISC
*--------------------------------------
DHCP.REQ .HS 01010600 OP,HTYPE,HLEN,HOPS
DHCP.REQ.XID .BS 4
.HS 0000 SECS
.DA S.DHCP.FLAGS.BRDCST
.HS 00000000 CIADDR
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DHCP.REQ.YIADDR .HS 00000000
.HS 00000000 SIADDR
DHCP.REQ.GIADDR .HS 00000000
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DHCP.REQ.CHADDR .HS 00000000.00000000.00000000.00000000
.BS 64 SNAME
.BS 128 FILE
.HS 63825363 COOKIE
.HS 3501 OPT
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.DA #S.DHCP.OPTIONS.DHCPRequest
.HS 3204
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DHCP.REQ.OPT.REQIP .BS 4
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.HS 3604
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DHCP.REQ.OPT.SVRIP .BS 4
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.HS FF
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DHCP.REQ.LEN .EQ *-DHCP.REQ
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*--------------------------------------
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DS.START
TimeOut .BS 1
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hSocket .BS 1
hFrame .BS 1
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DS.END
MAN
SAVE /A2OSX.SRC/SBIN/DHCPCLNT.S
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ASM