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Assembly

inet_aton

Description

Convert ip str to int 32, returns 255 255 255 255 if error

Input

  • Accumulator : Low addr of string
  • X Register : high addr

Modify

  • RESB
  • RES
  • TR0
  • TR1; TR0 indexed
  • TR2; TR0 indexed
  • TR3; TR0 indexed

Returns

  • X Register : X = 1 error, is not an ip

  • TR4 : First byte

  • TR5 : Second byte

  • TR6 : Third byte

  • TR7 : Last byte

Example

 lda #<ip_str
 ldx #>ip_str
 jsr inet_aton
 rts
ip_str:
 .asciiz 192.168.1.1
Last update: 2024-04-06