A2osX/SBIN/GETTY.S.txt

NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
				.LIST OFF
				.OP	65C02
				.OR	$2000
				.TF /A2OSX.BUILD/SBIN/GETTY
*--------------------------------------
				.INB /A2OSX.BUILD/INC/MACROS.I
				.INB /A2OSX.BUILD/INC/A2OSX.I
				.INB /A2OSX.BUILD/INC/NET.TELNET.I
*--------------------------------------
TIMEOUT.MAX		.EQ 100					1 sec.
*--------------------------------------
*			File Header (16 Bytes)
*--------------------------------------
CS.START		cld
				jmp (.1,x)
				.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
				.DA #64					SS
				.DA #0					ZP
				.DA 0
*--------------------------------------
* Relocation Table
*--------------------------------------
.1				.DA CS.INIT
				.DA CS.RUN
				.DA CS.DOEVENT
				.DA	CS.QUIT
L.MSG.USAGE		.DA MSG.USAGE
L.MSG.TELNETOPT	.DA MSG.TELNETOPT
L.MSG.GREETINGS .DA MSG.GREETINGS
L.ENV.TERM		.DA ENV.TERM
				.DA 0					End Of Reloc Table
*--------------------------------------
CS.INIT			ldy #S.PS.ARGC
				lda (pPs),y
				cmp #2
				bne .90
				
				lda #1
				>SYSCALL GetArg
				
				>SYSCALL MkNod
				bcs .9

				ldy #S.PS.hStdIn
				sta (pPs),y
				iny						#S.PS.hStdOut
				sta (pPs),y
				iny						#S.PS.hStdErr
				sta (pPs),y
				
				>STA.G hNode
				
				lda #2
				>SYSCALL GetArg
				bcs .9

				>SYSCALL ExpandStr
				bcs .9

				txa
				
				>STA.G hBinName
				
				lda (pPs)
				ora #S.PS.F.EVENT		Now accept events
				sta (pPs)

				clc
				rts
				
.90				>LDYA L.MSG.USAGE
				>SYSCALL printf
				lda #0
				sec
.9				rts
*--------------------------------------
CS.RUN			>SLEEP
				
				>SYSCALL GetChar
				bcs CS.RUN

				
.11				>SLEEP
				>SYSCALL GetChar
				bcc .11 
				
				jsr Init.Timeout

				ldy #0

.1				lda MSG.TELNETOPT,y
				phy
				>SYSCALL PutChar
				ply
				iny
				cpy #MSG.TELNETOPT.LEN
				bne .1
				
CS.RUN.LOOP		
.1				>SLEEP
				>SYSCALL GetChar
				bcs .4
				
				cmp #IAC
				beq CS.RUN.IACMODE
				


.4				jsr Wait.Timeout
				bcc .1				
				>PUSHWI KVER
				>LDYA L.MSG.GREETINGS
				>SYSCALL printf
				
				bcs .8					unable to send greetings...reset..
				
				>LDA.G hBinName
				>SYSCALL GetMemPtr
				>SYSCALL ExecPS
				
.9				rts

.8				clc
				rts
*--------------------------------------
CS.RUN.IACMODE	>SLEEP			Wait for IAC VERB (or SB)
				>SYSCALL GetChar
				bcs CS.RUN.IACMODE

				>STA.G IAC.VERB
				
.1				>SLEEP			Wait for IAC OPT
				>SYSCALL GetChar
				bcs .1
				
				>STA.G IAC.OPT
				
				>LDA.G IAC.VERB
				cmp #SB
				beq CS.RUN.IACSB
*--------------------------------------			
CS.RUN.IACVERB	

				jmp CS.RUN.LOOP							
*--------------------------------------
CS.RUN.IACSB  				
.1				>SLEEP
				>SYSCALL GetChar
				bcs .1

				>STA.G IAC.SB
				
				lda #0
				sta (pData)				reset IAC.SB.DATA
				
.2				>SLEEP
				>SYSCALL GetChar
				bcs .2

				cmp #IAC
				beq .4					end of DATA, go wait SE
				
				pha
				
				ldy #IAC.SB.DATA-1
				
.3				iny
				lda (pData),y
				bne .3
				
				pla
				sta (pData),y
				iny
				lda #0
				sta (pData),y
				bra .2
				
.4				>SLEEP
				>SYSCALL GetChar
				bcs .4
				
				cmp #SE
				bne .8

				>LDA.G IAC.OPT
				cmp #TELOPT.TTYPE
				bne .8
				
				>LDA.G IAC.SB
				cmp #SB.IS
				bne .8

				>PUSHEA.G IAC.SB.DATA
				>PUSHW L.ENV.TERM
				>SYSCALL SetEnv
				
.8				jmp CS.RUN.LOOP
*--------------------------------------
CS.DOEVENT		lda (pEvent)
				bpl .9					is it a TIMER event?

				ldy #TimeOut
				lda (pData),y
				beq .9
				
				dec 
				sta (pData),y
				
.9				sec						do not discard TIMER event
				rts	
*--------------------------------------
CS.QUIT			>LDA.G hBinName
				beq .1
				>SYSCALL FreeMem
				
.1				>LDA.G hNode
				beq .8

				>PUSHA
				>PUSHBI IOCTL.CLOSE
				>PUSHBI 0
				
				>SYSCALL IOCTL
				
.8				clc
				rts
*--------------------------------------
Init.Timeout	ldy #TimeOut
				lda #TIMEOUT.MAX
				sta (pData),y
				rts
*--------------------------------------
Wait.TimeOut	sec
				ldy #TimeOut
				lda (pData),y
				beq .9
				clc
.9				rts
*--------------------------------------
CS.END
MSG.USAGE		.AZ "Usage : GETTY <DEV> <PROGRAM>\r\n"
MSG.TELNETOPT	.DA #IAC,#WILL,#TELOPT.BINARY
				.DA #IAC,#DO,#TELOPT.LINEMODE
				.DA #IAC,#SB,#TELOPT.LINEMODE,#SB.SEND,#0,#IAC,#SE
				.DA #IAC,#DONT,#TELOPT.ECHO
				.DA #IAC,#WILL,#TELOPT.ECHO
				.DA #IAC,#WILL,#TELOPT.SGA
				.DA #IAC,#DO,#TELOPT.SGA
*				.DA #IAC,#DO,#TELOPT.NAWS
				.DA #IAC,#DO,#TELOPT.TTYPE
				.DA #IAC,#SB,#TELOPT.TTYPE,#SB.SEND,#IAC,#SE
MSG.TELNETOPT.LEN	.EQ *-MSG.TELNETOPT
MSG.GREETINGS	.AZ "\r\nA2osX-GeTTY %d.%d\r\n"
ENV.TERM		.AZ "TERM"
*--------------------------------------
				.DUMMY
				.OR 0
DS.START
IAC.SB.DATA		.BS 64				
IAC.VERB		.BS 1
IAC.OPT			.BS 1
IAC.SB			.BS 1
hNode			.BS 1
hBinName		.BS 1
TimeOut			.BS 1
DS.END			.ED
MAN
SAVE /A2OSX.SRC/SBIN/GETTY.S
ASM