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56 lines
766 B
ArmAsm
56 lines
766 B
ArmAsm
;originally from Per Olofsson's IP65 library - http://www.paradroid.net/ip65
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; Common ethernet driver code
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.include "../inc/common.i"
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.export eth_set_broadcast_dest
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.export eth_set_my_mac_src
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.export eth_set_proto
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.exportzp eth_proto_ip
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.exportzp eth_proto_arp
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.import eth_outp
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.import cfg_mac
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; ethernet packet offsets
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eth_dest = 0 ; destination address
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eth_src = 6 ; source address
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eth_type = 12 ; packet type
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eth_data = 14 ; packet data
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; protocols
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eth_proto_ip = 0
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eth_proto_arp = 6
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.code
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eth_set_broadcast_dest:
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ldx #5
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lda #$ff
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: sta eth_outp,x
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dex
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bpl :-
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rts
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eth_set_my_mac_src:
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ldx #5
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: lda cfg_mac,x
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sta eth_outp + 6,x
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dex
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bpl :-
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rts
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eth_set_proto:
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sta eth_outp + eth_type + 1
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lda #8
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sta eth_outp + eth_type
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rts
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