A2osX/SBIN/GETTY.S.txt

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NEW
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AUTO 3,1
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.LIST OFF
.OP 65C02
.OR $2000
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.TF sbin/getty
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*--------------------------------------
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.INB inc/macros.i
.INB inc/a2osx.i
.INB inc/net.telnet.i
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*--------------------------------------
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TIMEOUT.MAX .EQ 40 4 sec.
IAC.BUF.MAX .EQ 20
*--------------------------------------
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.DUMMY
.OR ZPBIN
ZS.START
ZPPtr1 .BS 2
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TimeOut .BS 1
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ArgIndex .BS 1
ArgDev .BS 1
ArgProg .BS 1
hFILE .BS 1
bExitOnClose .BS 1
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IAC.CMD .BS 1
IAC.SUBCMD .BS 1
IAC.SB.CMD .BS 1
IAC.SB.LEN .BS 1
IAC.BUF .BS IAC.BUF.MAX
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ZS.END .ED
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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
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.DA #S.PS.F.EVENT S.PS.F
.DA #0
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.DA CS.END-CS.START Code Size (without Constants)
.DA DS.END-DS.START Data SegmentSize
.DA #16 Stack Size
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.DA #ZS.END-ZS.START Zero Page Size
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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.MSG.USAGE .DA MSG.USAGE
L.MSG.GREETINGS .DA MSG.GREETINGS
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L.TELNETOPTS .DA TELNETOPTS
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L.TELNETOPT.TTYPE .DA TELNETOPT.TTYPE
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L.TELNETOPT.LMODE .DA TELNETOPT.LMODE
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L.ENV.TERM .DA ENV.TERM
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.DA 0 End Of Reloc Table
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*--------------------------------------
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CS.RUN ldy #S.PS.ARGC
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lda (pPS),y
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cmp #2
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bcc .9
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.1 inc ArgIndex
lda ArgIndex
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>SYSCALL ArgV
bcs .8
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>STYA ZPPtr1
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jsr CkeckOption
bcs .9
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beq .1 valid option, check next arg
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ldx ArgIndex
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lda ArgDev
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bne .2
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stx ArgDev
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bra .1
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.2 lda ArgProg
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bne .9
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stx ArgProg
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bra .1
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.9 >LDYA L.MSG.USAGE
>SYSCALL PutS
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lda #E.SYN
sec
.99 rts
*--------------------------------------
.8 lda ArgProg
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beq .9
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lda ArgDev
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beq .9
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>SYSCALL ArgV
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>PUSHYA
>PUSHBI O.RDWR
>PUSHBI 0 type
>PUSHWZ auxtype
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>SYSCALL FOpen
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bcs .99
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sta hFILE
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ldy #S.PS.hStdIn
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sta (pPS),y
iny #S.PS.hStdOut
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sta (pPS),y
iny #S.PS.hStdErr
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sta (pPS),y
*--------------------------------------
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CS.RUN.LOOP0 >SLEEP
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>PUSHW L.ENV.TERM
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>SYSCALL UnsetEnv
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ldy #S.PS.hStdOut
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lda (pPS),y
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>PUSHA
>PUSHW L.TELNETOPTS
>PUSHWI TELNETOPTS.LEN
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>SYSCALL FWrite
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bcs CS.RUN.EXIT I/O error
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lda #TIMEOUT.MAX
sta TimeOut
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CS.RUN.LOOP1 >SLEEP
ldy #S.PS.hStdIn
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lda (pPS),y
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>SYSCALL FEOF
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bcs CS.RUN.9 I/O error
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tay
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bne .1 no char
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>SYSCALL GetChar
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bcs CS.RUN.9
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cmp #IAC
beq CS.RUN.IACMODE
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>SYSCALL PutChar
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bcs CS.RUN.EXIT
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bra CS.RUN.LOOP1
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.1 lda TimeOut
bne CS.RUN.LOOP1
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jsr CS.RUN.GREETINGS
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bcs CS.RUN.EXIT unable to send greetings...
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.2 lda ArgProg
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>SYSCALL ArgV
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>PUSHYA
>PUSHBI S.PS.F.HOLD
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>SYSCALL ExecV
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>SLEEP
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CS.RUN.EXIT lda bExitOnClose
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bmi .8
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ldy #S.PS.S
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lda (pPS),y
cmp #S.PS.S.QUIT I've been killed :-(
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beq .8
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jmp CS.RUN.LOOP0
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.8 lda #0
sec
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CS.RUN.9 rts
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*--------------------------------------
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CS.RUN.IACMODE >SYSCALL GetChar Wait for IAC CMD (or SB)
bcs CS.RUN.9
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sta IAC.CMD
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>SYSCALL GetChar Wait for IAC SUBCMD
bcs CS.RUN.9
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sta IAC.SUBCMD
tax
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lda IAC.CMD
cmp #SB
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beq CS.RUN.IAC.SB
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*--------------------------------------
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CS.RUN.IAC.CMD cmp #WILL
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bne .8
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cpx #TN.O.TTYPE
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bne .2
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ldy #S.PS.hStdOut
lda (pPS),y
>PUSHA
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>PUSHW L.TELNETOPT.TTYPE
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>PUSHWI TELNETOPT.TTYPE.LEN
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bra .7
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.2 cpx #TN.O.LINEMODE
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bne .8
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ldy #S.PS.hStdOut
lda (pPS),y
>PUSHA
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>PUSHW L.TELNETOPT.LMODE
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>PUSHWI TELNETOPT.LMODE.LEN
.7 >SYSCALL FWrite
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.8 jmp CS.RUN.LOOP1
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*--------------------------------------
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CS.RUN.IAC.SB >SYSCALL GetChar Wait for IAC SB.IS or SEND
bcs .9
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sta IAC.SB.CMD
stz IAC.SB.LEN
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.2 >SYSCALL GetChar
bcs .9
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cmp #IAC
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beq .4 end of DATA, go wait SE
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ldy IAC.SB.LEN
sta IAC.BUF,y
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iny
lda #0
sta IAC.BUF,y
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sty IAC.SB.LEN
cpy #IAC.BUF.MAX
bne .2
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bra .8
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.4 >SYSCALL GetChar
bcs .9
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cmp #SE
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bne .8
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lda IAC.SUBCMD
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cmp #TN.O.TTYPE
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bne .8
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lda IAC.SB.CMD
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cmp #SB.IS
bne .8
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>PUSHW L.ENV.TERM
>PUSHWI IAC.BUF
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>SYSCALL SetEnv
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.8 jmp CS.RUN.LOOP1
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.9 rts
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*--------------------------------------
CS.RUN.GREETINGS
>PUSHW L.MSG.GREETINGS
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>PUSHW A2osX.KVER
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lda ArgDev
>SYSCALL ArgV
>PUSHYA
>PUSHBI 4
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>SYSCALL PrintF
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rts
*--------------------------------------
CS.DOEVENT lda (pEvent)
bpl .9 is it a TIMER event?
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lda TimeOut
beq .9
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dec TimeOut
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.9 sec do not discard TIMER event
rts
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*--------------------------------------
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CS.QUIT lda hFILE
beq .8
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>SYSCALL FClose
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.8
CS.INIT clc
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rts
*--------------------------------------
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CkeckOption lda (ZPPtr1)
cmp #'-'
bne .8
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ldy #2
lda (ZPPtr1),y
bne .8
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dey
lda (ZPPtr1),y
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ldx #OptionVars-OptionList-1
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.2 cmp OptionList,x
beq .3
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dex
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bpl .2
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sec invalid option
rts
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.3 ldy OptionVars,x
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eor #$80 toggle option
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sta $0,y
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lda #0 exit with 0
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.8 clc !0 if not an option
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rts
*--------------------------------------
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CS.END
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OptionList .AS "Ee"
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OptionVars .DA #bExitOnClose,#bExitOnClose
*--------------------------------------
MSG.GREETINGS .CZ "\r\nA2osX-GeTTY %d.%d on %s\r\n"
MSG.USAGE .CS "Usage : GETTY <DEV> <PROGRAM>\r\n"
.CZ " -E : Exit on disconnect"
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*--------------------------------------
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TELNETOPTS .DA #IAC,#WILL,#TN.O.BINARY
.DA #IAC,#WILL,#TN.O.ECHO
.DA #IAC,#WILL,#TN.O.SGA
.DA #IAC,#DO,#TN.O.SGA
.DA #IAC,#DO,#TN.O.NAWS
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.DA #IAC,#DO,#TN.O.TTYPE
.DA #IAC,#DO,#TN.O.LINEMODE
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TELNETOPTS.LEN .EQ *-TELNETOPTS
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*--------------------------------------
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TELNETOPT.TTYPE .DA #IAC,#SB,#TN.O.TTYPE,#SB.SEND,#IAC,#SE
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TELNETOPT.TTYPE.LEN .EQ *-TELNETOPT.TTYPE
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*--------------------------------------
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TELNETOPT.LMODE .DA #IAC,#SB,#TN.O.LINEMODE,#SB.SEND,#0,#IAC,#SE
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TELNETOPT.LMODE.LEN .EQ *-TELNETOPT.LMODE
ENV.TERM .AZ "TERM"
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*--------------------------------------
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.DUMMY
.OR 0
DS.START
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DS.END .ED
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MAN
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SAVE usr/src/sbin/getty.s
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ASM