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   1         ;; Generic crt0.s for a Z80
   2         .globl  __main
   3
   4         .area _HEADER (ABS)
   5         ;; Reset vector
   6         .org    0
   7         jp      init
   8
   9         .org    0x08
  10         reti
  11         .org    0x10
  12         reti
  13         .org    0x18
  14         reti
  15         .org    0x20
  16         reti
  17         .org    0x28
  18         reti
  19         .org    0x30
  20         reti
  21         .org    0x38
  22         reti
  23
  24         .org    0x150
  25 init:
  26         ;; Stack at the top of memory.
  27         ld      sp,#0xffff
  28
  29         ;; Use _main instead of main to bypass sdcc's intelligence
  30         ei
  31         call    __main
  32         jp      _exit
  33
  34         ;; Ordering of segments for the linker.
  35         .area   _CODE
  36         .area   _DATA
  37
  38 __clock::
  39         ld      a,#2
  40         out     (0xff),a
  41         ret
  42
  43 _getsp::
  44         ld      hl,#0
  45         add     hl,sp
  46         ret
  47
  48 __printTStates::
  49         ld      a,#3
  50         out     (0xff),a
  51         ret
  52
  53 _exit::
  54         ;; Exit - special code to the emulator
  55         ld      a,#1
  56         out     (0xff),a
  57 1$:
  58         halt
  59         jr      1$