AppleWin/source/Memory.h

105 lines
3.6 KiB
C++

#pragma once
// Memory Flag
#define MF_80STORE 0x00000001
#define MF_ALTZP 0x00000002
#define MF_AUXREAD 0x00000004 // RAMRD
#define MF_AUXWRITE 0x00000008 // RAMWRT
#define MF_BANK2 0x00000010 // Language Card Bank 2 $D000..$DFFF
#define MF_HIGHRAM 0x00000020 // Language Card RAM is active $D000..$DFFF
#define MF_HIRES 0x00000040
#define MF_PAGE2 0x00000080
#define MF_SLOTC3ROM 0x00000100
#define MF_SLOTCXROM 0x00000200
#define MF_WRITERAM 0x00000400 // Language Card RAM is Write Enabled
#define MF_IMAGEMASK 0x000003F7
enum
{
// Note: All are in bytes!
APPLE_SLOT_SIZE = 0x0100, // 1 page = $Cx00 .. $CxFF (slot 1 .. 7)
APPLE_SLOT_BEGIN = 0xC100, // each slot has 1 page reserved for it
APPLE_SLOT_END = 0xC7FF, //
FIRMWARE_EXPANSION_SIZE = 0x0800, // 8 pages = $C800 .. $CFFF
FIRMWARE_EXPANSION_BEGIN = 0xC800, // [C800,CFFF)
FIRMWARE_EXPANSION_END = 0xCFFF //
};
enum MemoryInitPattern_e
{
MIP_ZERO
, MIP_RANDOM
, MIP_FF_FF_00_00
, MIP_FF_00_FULL_PAGE
, MIP_00_FF_HALF_PAGE
, MIP_FF_00_HALF_PAGE
, MIP_PAGE_ADDRESS_LOW
, MIP_PAGE_ADDRESS_HIGH
, NUM_MIP
};
enum MemoryType_e
{
MEM_TYPE_NATIVE = 0,
MEM_TYPE_RAMWORKS = 1,
MEM_TYPE_SATURN = 2,
NUM_MEM_TYPE = 3
};
// TODO-TC: Refactor codebase by renaming /nCyclesLeft/ to /uExecutedCycles/
typedef BYTE (__stdcall *iofunction)(WORD nPC, WORD nAddr, BYTE nWriteFlag, BYTE nWriteValue, ULONG nCyclesLeft);
extern MemoryType_e g_eMemType;
extern iofunction IORead[256];
extern iofunction IOWrite[256];
extern LPBYTE memwrite[0x100];
extern LPBYTE mem;
extern LPBYTE memdirty;
extern DWORD memmode;
#ifdef RAMWORKS
const UINT kMaxExMemoryBanks = 127; // 127 * aux mem(64K) + main mem(64K) = 8MB
extern UINT g_uMaxExPages; // user requested ram pages (from cmd line)
extern UINT g_uActiveBank;
#endif
#ifdef SATURN
extern UINT g_uSaturnTotalBanks;
extern UINT g_uSaturnActiveBank; // Saturn 128K Language Card Bank 0 .. 7
#endif // SATURN
void RegisterIoHandler(UINT uSlot, iofunction IOReadC0, iofunction IOWriteC0, iofunction IOReadCx, iofunction IOWriteCx, LPVOID lpSlotParameter, BYTE* pExpansionRom);
void MemDestroy ();
bool MemCheckSLOTC3ROM();
bool MemCheckSLOTCXROM();
LPBYTE MemGetAuxPtr(const WORD);
LPBYTE MemGetMainPtr(const WORD);
LPBYTE MemGetBankPtr(const UINT nBank);
LPBYTE MemGetCxRomPeripheral();
bool MemIsAddrCodeMemory(const USHORT addr);
void MemInitialize ();
void MemInitializeROM(void);
void MemInitializeCustomF8ROM(void);
void MemInitializeIO(void);
void MemInitializeCardExpansionRomFromSnapshot(void);
BYTE MemReadFloatingBus(const ULONG uExecutedCycles);
BYTE MemReadFloatingBus(const BYTE highbit, const ULONG uExecutedCycles);
void MemReset ();
void MemResetPaging ();
void MemUpdatePaging(BOOL initialize);
LPVOID MemGetSlotParameters (UINT uSlot);
void MemSetSnapshot_v1(const DWORD MemMode, const BOOL LastWriteRam, const BYTE* const pMemMain, const BYTE* const pMemAux);
std::string MemGetSnapshotUnitAuxSlotName(void);
void MemSaveSnapshot(class YamlSaveHelper& yamlSaveHelper);
bool MemLoadSnapshot(class YamlLoadHelper& yamlLoadHelper);
void MemSaveSnapshotAux(class YamlSaveHelper& yamlSaveHelper);
bool MemLoadSnapshotAux(class YamlLoadHelper& yamlLoadHelper, UINT version);
BYTE __stdcall IO_Null(WORD programcounter, WORD address, BYTE write, BYTE value, ULONG nCycles);
BYTE __stdcall MemCheckPaging (WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
BYTE __stdcall MemSetPaging(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);