hexed/sega_gcc.s

   1         dc.l 0x0,0x200\r
   2         dc.l INT,INT,INT,INT,INT,INT,INT\r
   3         dc.l INT,INT,INT,INT,INT,INT,INT,INT\r
   4         dc.l INT,INT,INT,INT,INT,INT,INT,INT\r
   5         dc.l INT,INT,INT,HBL,INT,VBL,INT,INT\r
   6         dc.l INT,INT,INT,INT,INT,INT,INT,INT\r
   7         dc.l INT,INT,INT,INT,INT,INT,INT,INT\r
   8         dc.l INT,INT,INT,INT,INT,INT,INT,INT\r
   9         dc.l INT,INT,INT,INT,INT,INT,INT\r
  10         .ascii "SEGA GENESIS                    "\r
  11         .ascii "hexed (c) notaz, 2009                           "\r
  12         .ascii "HEXED (C) NOTAZ, 2009                           "\r
  13         .ascii "GM 00000000-00"\r
  14         .byte 0x00,0x00\r
  15         .ascii "JD              "\r
  16         .byte 0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00\r
  17         .byte 0x00,0xff,0x00,0x00,0xff,0xff,0xff,0xff\r
  18         .ascii "               "\r
  19         .ascii "                        "\r
  20         .ascii "                         "\r
  21         .ascii "JUE             "\r
  22 \r
  23 * Check Version Number\r
  24         move.b  (0xa10000),%d0\r
  25         andi.b  #0x0f,%d0\r
  26         beq     WrongVersion\r
  27 * Sega Security Code (SEGA)\r
  28         move.l  #0x53454741,(0xa14000)\r
  29 WrongVersion:\r
  30         moveq   #0,%d0\r
  31         movea.l %d0,%a7\r
  32         move    %a7,%usp\r
  33 \r
  34         tst.w   0xC00004\r
  35         bra     main\r
  36 \r
  37 * INT:\r
  38 *       rte\r
  39 \r
  40 HBL:\r
  41         rte\r
  42 \r
  43 * VBL:\r
  44 *       addq.l #1,(vtimer).l\r
  45 *       rte\r
  46 \r