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59 lines
1.0 KiB
Plaintext
59 lines
1.0 KiB
Plaintext
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PR#3
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PREFIX /A2OSX.SRC
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NEW
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INC 1
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AUTO 6
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.LIST OFF
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*--------------------------------------
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ICMPListener ldy #S.ICMP.TYPE
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lda (ZPFrameBase1),y
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cmp #S.ICMP.TYPE.ECHOREQ
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bne .9
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jsr GetIPCFG
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ldy #S.IP.DST
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ldx #S.IPCFG.IP
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.10 lda (ZPFrameBase1),y
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cmp IPCFG,x
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bne .9
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iny
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inx
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cpx #S.IPCFG.IP+4
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bne .10
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>LIBCALL hLIBTCPIP,LIBTCPIP.NEW.ICMP.FRAME
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bcs .9
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phx
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>STYA ZPFrameBase2
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ldy #S.ICMP.TYPE
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lda #S.ICMP.TYPE.ECHOREP
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sta (ZPFrameBase2),y
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jsr MakeIPReply
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ldy #S.ICMP.IDENTIFIER
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.1 lda (ZPFrameBase1),y
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sta (ZPFrameBase2),y
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iny
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cpy #ZPFrameLen1
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bne .1
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>PUSHW ZPFrameLen1
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>PUSHW ZPFrameBase2
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>LIBCALL hLIBTCPIP,LIBTCPIP.SEND.ICMP.FRAME
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pla
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>SYSCALL SYS.FreeMemA
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clc
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rts
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.9 sec
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rts
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*--------------------------------------
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*--------------------------------------
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MAN
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SAVE SBIN/TCPIP.S.ICMP
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LOAD SBIN/TCPIP.S
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ASM
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