script_rom/trunk/vrc4b.ud

   1 #VRCIV A0,A1 swap + A1 invert
   2 #VRC - CPU
   3 #A0  = A1
   4 #A1  ^ A0
   5 #RC832, RC842
   6 #¤¬¤ó¤Ð¤ì¥´¥¨¥â¥ó³°ÅÁ¾Ã¤¨¤¿²«¶â¥¥»¥ë
   7 MAPPER 25
   8 CPU_ROMSIZE 0x40000
   9 PPU_ROMSIZE 0x40000
  10 #$9001 bit2:0  $a000 switch $8000-$9fff
  11 #$9001 bit2:1  $a000 switch $c000-$dfff
  12 DUMP_START
  13 #PROGRAM ROM 0x00000-0x3bfff
  14 CPU_WRITE $9001 $00
  15 STEP_START i 0 0x1e 2
  16         CPU_WRITE $8000 i
  17         CPU_WRITE $a000 i | 1
  18         CPU_READ $8000 0x4000
  19 STEP_END
  20 #PROGRAM ROM 0x3c000-0x3ffff
  21 CPU_WRITE $9001 $02
  22 CPU_WRITE $8000 $1e
  23 CPU_READ $c000 0x4000
  24
  25 #CHRROM 0x00000-0x3ffff
  26 STEP_START up 0 0x100 0x10
  27         STEP_START v 0 0x10 8
  28                 CPU_WRITE $b002 up >> 4
  29                 CPU_WRITE $b000 v | 0
  30                 CPU_WRITE $b003 up >> 4
  31                 CPU_WRITE $b001 v | 1
  32                 CPU_WRITE $c002 up >> 4
  33                 CPU_WRITE $c000 v | 2
  34                 CPU_WRITE $c003 up >> 4
  35                 CPU_WRITE $c001 v | 3
  36                 CPU_WRITE $d002 up >> 4
  37                 CPU_WRITE $d000 v | 4
  38                 CPU_WRITE $d003 up >> 4
  39                 CPU_WRITE $d001 v | 5
  40                 CPU_WRITE $e002 up >> 4
  41                 CPU_WRITE $e000 v | 6
  42                 CPU_WRITE $e003 up >> 4
  43                 CPU_WRITE $e001 v | 7
  44                 PPU_READ 0 0x2000
  45         STEP_END
  46 STEP_END
  47 DUMP_END