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  1. #ifndef MEM_H_
  2. #define MEM_H_
  3.  
  4.  
  5. ////           ////
  6. // Z80 MEMORYMAP //
  7. ////           ////
  8.  
  9. /*
  10.  * 0x0000-0x3fff: Z80 RAM
  11.  * 0000-1FFFh : RAM
  12.  * 2000-3FFFh : RAM (mirror)
  13.  */
  14. #define Z80_RAM_START 0x0000
  15. #define Z80_RAM_END 0x3fff
  16.  
  17. /*
  18.  * 0x4000-0x5fff: YM2612
  19.  * The YM2612 has two address lines, so it is available at 4000-4003h and
  20.  * is mirrored repeatedly up to 5FFFh.
  21.  */
  22. #define YM2612_RAM_START 0x4000
  23. #define YM2612_RAM_END 0x5fff
  24.  
  25. /* 0x6000-0x6fff: bank register */
  26. #define BANK_RAM_START 0x6000
  27. #define BANK_RAM_END 0x6fff
  28.  
  29. /* 0x7000-0x7fff: PSG/VDP */
  30. #define PSGVDP_RAM_START 0x7000
  31. #define PSGVDP_RAM_END 0x7fff
  32.  
  33. /* 0x8000-0xffff: M68K bank */
  34. #define M68K_RAM_START 0x8000
  35. #define M68K_RAM_END 0xffff
  36.  
  37.  
  38. ////            ////
  39. // m68K MEMORYMAP //
  40. ////            ////
  41.  
  42. /* 0x000000-0x7fffff: Rom */
  43. #define M68K_ROM_START 0x000000
  44. #define M68K_ROM_END 0x7fffff
  45.  
  46. /* 0x800000-0x9fffff: empty area1 */
  47. #define M68K_EMPTY1_START 0x800000
  48. #define M68K_EMPTY1_END 0x9fffff
  49.  
  50. /* 0xa00000-0xafffff: system I/O and control */
  51. #define M68K_IO_START 0xa00000
  52. #define M68K_IO_END 0xafffff
  53.  
  54. /* 0xb00000-0xbfffff: empty area */
  55. #define M68K_EMPTY2_START 0xb00000
  56. #define M68K_EMPTY2_END 0xbfffff
  57.  
  58. /* 0xc00000-0xdfffff: VDP/PSG */
  59. #define M68K_VDP_START 0xc00000
  60. #define M68K_VDP_END 0xdfffff
  61.  
  62. #endif
  63.