A2osX/BIN/ARP.S.txt

PR#3
PREFIX /A2OSX.BUILD
NEW
INC 1
AUTO 6
				.LIST OFF
				.OP	65C02
				.OR	$2000
				.TF /A2OSX.BUILD/BIN/ARP
*--------------------------------------
				.INB /A2OSX.BUILD/INC/MACROS.I
				.INB /A2OSX.BUILD/INC/A2OSX.I
				.INB /A2OSX.BUILD/INC/LIBTCPIP.I
*--------------------------------------
TIMEOUT.MAX		.EQ 40					40*100ms = 4 sec.
*--------------------------------------
ZPPTR1			.EQ ZPBIN
*--------------------------------------
*			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
				.DA DS.END-DS.START		Data Segment to Allocate
				.DA 0
				.DA 0
*--------------------------------------
* Relocation Table
*--------------------------------------
.1				.DA CS.INIT
				.DA CS.RUN
				.DA CS.DOEVENT		
				.DA	CS.QUIT
L.LIBTCPIP		.DA LIBTCPIP
L.SSCANF.IP		.DA SSCANF.IP
L.DST.IP		.DA DST.IP
L.DST.MAC		.DA DST.MAC
L.MSG0			.DA MSG0
L.MSG1			.DA MSG1
L.MSG2			.DA MSG2
				.DA 0
*--------------------------------------
CS.INIT			>LDYA L.LIBTCPIP
				>SYSCALL LoadLibYA
				sta hLIBTCPIP
				
				lda (pPs)
				ora #S.PS.F.EVENT		Now accept events
				sta (pPs)
				clc	
				rts
*--------------------------------------
CS.RUN			>SYSCALL GetArgC
				cmp #1
				bne .1
				jmp CS.RUN.DUMP
			
.1				>PUSHW L.DST.IP
				>PUSHW L.SSCANF.IP
				lda #1
				>SYSCALL GetArg.A
				>PUSHYA
				
				>SYSCALL SSCANF
				bcc CS.RUN.QUERY
					
				lda #K.E.SYN
				sec
				rts
*--------------------------------------
CS.RUN.QUERY	jsr Init.Timeout

.1				>PUSHW L.DST.MAC
				>PUSHW L.DST.IP
				>LIBCALL hLIBTCPIP,LIBTCPIP.ARP.QUERY
				bcc .2					success, print & exit
				
				jsr Wait.TimeOut
				bcs .9
				
				>SYSCALL Sleep
				>SYSCALL GetC
				bcs .1
				cmp #3
				beq .8
				bra .1
				
.2				ldx #5
.3				>PUSHB DST.MAC,x
				dex
				bpl .3
				
				ldx #3
.4				>PUSHB DST.IP,x
				dex
				bpl .4
				
				>LDYA L.MSG2
				>SYSCALL PrintF.YA
				
.8				lda #0
				
.9				sec
				rts
*--------------------------------------
CS.RUN.DUMP		>LIBCALL hLIBTCPIP,LIBTCPIP.ARP.GetC.ACHE
				>STYA ZPPTR1
				
				>LDYA L.MSG0
				>SYSCALL PrintF.YA

				ldx #K.ARPCACHE.SIZE
				
.1				lda (ZPPTR1)
				beq .4
				
				ldy #S.ARPCACHE.IP+4
.2				dey
				>PUSHB (ZPPTR1),y
				cpy #S.ARPCACHE.IP
				bne .2
				
				ldy #S.ARPCACHE.MAC+6
.3				dey
				>PUSHB (ZPPTR1),y
				cpy #S.ARPCACHE.MAC
				bne .3
				
				ldy #S.ARPCACHE.TTL+1
				>PUSHB (ZPPTR1),y
				dey
				>PUSHB (ZPPTR1),y
				
				>PUSHB (ZPPTR1)
				
				>LDYA L.MSG1
				phx
				>SYSCALL PrintF.YA
				plx
				
.4				lda ZPPTR1
				clc
				adc #S.ARPCACHE
				sta ZPPTR1
				bcc .5
				inc ZPPTR1+1
.5				dex
				bne .1
				
.8				lda #0					tell TSKMGR that all done ok, but 
				sec						we do not want to stay in memory
				rts
*--------------------------------------
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 hLIBTCPIP
				>SYSCALL UnloadLibA
				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
LIBTCPIP		>PSTR "libtcpip.o"
SSCANF.IP		>PSTR "%d.%d.%d.%d"
MSG0			>CSTR "STS TTL   MAC Address       IP Address\r\n"
MSG1			>CSTR "$%h %5D %h:%h:%h:%h:%h:%h %d.%d.%d.%d\r\n"
MSG2			>CSTR "%d.%d.%d.%d is at %h:%h:%h:%h:%h:%h\r\n"
*--------------------------------------
DS.START
hLIBTCPIP		.BS 1
DST.IP			.BS 4
DST.MAC			.BS 6
TimeOut			.BS 1
DS.END
*--------------------------------------
MAN
SAVE /A2OSX.SRC/BIN/ARP.S
ASM