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75 lines
1.1 KiB
ArmAsm
75 lines
1.1 KiB
ArmAsm
; ip65 main routines
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.include "../inc/common.i"
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.export ip65_init
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.export ip65_process
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.export ip65_ctr
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.export ip65_ctr_arp
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.export ip65_ctr_ip
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.import eth_init
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.import timer_init
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.import arp_init
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.import ip_init
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.import eth_inp
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.import eth_rx
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.import ip_process
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.import arp_process
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.importzp eth_proto_arp
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.bss
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ip65_ctr: .res 1 ; incremented for every incoming packet
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ip65_ctr_arp: .res 1 ; incremented for every incoming arp packet
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ip65_ctr_ip: .res 1 ; incremented for every incoming ip packet
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.code
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; initialize stack
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ip65_init:
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jsr eth_init ; initialize ethernet driver
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bcs @fail
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jsr timer_init ; initialize timer
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jsr arp_init ; initialize arp
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jsr ip_init ; initialize ip, icmp, udp, and tcp
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clc
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@fail:
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rts
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; maintenance routine
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; polls for packets, and dispatches to listeners
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ip65_process:
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jsr eth_rx ; check for incoming packets
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bcs @done
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lda eth_inp + 12 ; type should be 08xx
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cmp #8
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bne @done
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lda eth_inp + 13
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; cmp #eth_proto_ip ; ip = 00
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beq @ip
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cmp #eth_proto_arp ; arp = 06
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beq @arp
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@done:
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rts
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@arp:
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inc ip65_ctr_arp
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jmp arp_process
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@ip:
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inc ip65_ctr_ip
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jmp ip_process
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