git.sur5r.net Git - cc65/blob - src/sim65/addrspace.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                addrspace.h                                */
   4 /*                                                                           */
   5 /*                 CPU address space for the 6502 simulator                  */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2003-2012, Ullrich von Bassewitz                                      */
  10 /*                Roemerstrasse 52                                           */
  11 /*                D-70794 Filderstadt                                        */
  12 /* EMail:         uz@cc65.org                                                */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #ifndef ADDRSPACE_H
  37 #define ADDRSPACE_H
  38
  39
  40
  41 /*****************************************************************************/
  42 /*                                   Data                                    */
  43 /*****************************************************************************/
  44
  45
  46
  47 /* Forwards */
  48 struct CPUData;
  49 struct ChipInstance;
  50
  51 /* Forwards */
  52 typedef struct AddressSpace AddressSpace;
  53 struct AddressSpace {
  54
  55     struct CPU*                 CPU;      /* Backpointer to CPU */
  56     unsigned                    Size;     /* Address space size */
  57     struct ChipInstance*        Data[1];  /* Pointer to chips, dynamically! */
  58
  59 };
  60
  61
  62
  63 /*****************************************************************************/
  64 /*                                   Code                                    */
  65 /*****************************************************************************/
  66
  67
  68
  69 AddressSpace* NewAddressSpace (unsigned Size);
  70 /* Allocate a new address space and return it */
  71
  72 void ASWrite (AddressSpace* AS, unsigned Addr, unsigned char Val);
  73 /* Write a byte to a given location */
  74
  75 unsigned char ASRead (AddressSpace* AS, unsigned Addr);
  76 /* Read a byte from a location */
  77
  78 void ASWriteCtrl (AddressSpace* AS, unsigned Addr, unsigned char Val);
  79 /* Write a byte to a given location */
  80
  81 unsigned char ASReadCtrl (AddressSpace* AS, unsigned Addr);
  82 /* Read a byte from a location */
  83
  84 void ASAssignChip (AddressSpace* AS, struct ChipInstance* CI,
  85                    unsigned Addr, unsigned Range);
  86 /* Assign a chip instance to memory locations */
  87
  88 struct ChipInstance* ASGetChip (const AddressSpace* AS, unsigned Addr);
  89 /* Get the chip that is located at the given address (may return NULL). */
  90
  91
  92
  93 /* End of addrspace.h */
  94
  95 #endif
  96
  97
  98
  99