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new memory handling, but asm and mappers need update.

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Some cleanup and magic bit removal as a bonus.


git-svn-id: file:///home/notaz/opt/svn/PicoDrive@768 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-09-02 16:05:54 +00:00
parent c238eec8f5
commit af37bca858
20 changed files with 1173 additions and 1720 deletions
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37
pico/pico_int.h
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@ -255,7 +255,7 @@ struct PicoMisc
char dirtyPal; // 06 Is the palette dirty (1 - change @ this frame, 2 - some time before)
unsigned char hardware; // 07 Hardware value for country
unsigned char pal; // 08 1=PAL 0=NTSC
unsigned char sram_reg; // SRAM mode register. bit0: allow read? bit1: deny write? bit2: EEPROM? bit4: detected? (header or by access)
unsigned char sram_status; // 09 SRAM status. See SRS_* below
unsigned short z80_bank68k; // 0a
unsigned short z80_lastaddr; // this is for Z80 faking
unsigned char z80_fakeval;
@ -293,6 +293,11 @@ struct Pico
};
// sram
#define SRS_MAPPED (1 << 0)
#define SRS_READONLY (1 << 1)
#define SRS_EEPROM (1 << 2)
#define SRS_DETECTED (1 << 4)
struct PicoSRAM
{
unsigned char *data; // actual data
@ -435,25 +440,23 @@ void PicoDrawSetColorFormatMode4(int which);
// memory.c
PICO_INTERNAL void PicoInitPc(unsigned int pc);
PICO_INTERNAL unsigned int PicoCheckPc(unsigned int pc);
PICO_INTERNAL_ASM unsigned int PicoRead32(unsigned int a);
PICO_INTERNAL void PicoMemSetup(void);
PICO_INTERNAL_ASM void PicoMemReset(void);
PICO_INTERNAL void PicoMemResetHooks(void);
PICO_INTERNAL int PadRead(int i);
PICO_INTERNAL int ym2612_write_local(unsigned int a, unsigned int d, int is_from_z80);
void z80_mem_setup(void);
extern unsigned int (*PicoRead16Hook)(unsigned int a, int realsize);
extern void (*PicoWrite8Hook) (unsigned int a,unsigned int d,int realsize);
extern void (*PicoWrite16Hook)(unsigned int a,unsigned int d,int realsize);
// cd/memory.c
PICO_INTERNAL void PicoMemSetupCD(void);
PICO_INTERNAL_ASM void PicoMemResetCD(int r3);
PICO_INTERNAL_ASM void PicoMemResetCDdecode(int r3);
unsigned int PicoRead8_io(unsigned int a);
unsigned int PicoRead16_io(unsigned int a);
void PicoWrite8_io(unsigned int a, unsigned int d);
void PicoWrite16_io(unsigned int a, unsigned int d);
// pico/memory.c
PICO_INTERNAL void PicoMemSetupPico(void);
PICO_INTERNAL unsigned int ym2612_read_local_68k(void);
// cd/memory.c
PICO_INTERNAL void PicoMemSetupCD(void);
PICO_INTERNAL_ASM void PicoMemRemapCD(int r3);
PICO_INTERNAL_ASM void PicoMemResetCDdecode(int r3);
// pico.c
extern struct Pico Pico;
@ -534,9 +537,9 @@ PICO_INTERNAL_ASM unsigned int PicoVideoRead8(unsigned int a);
extern int (*PicoDmaHook)(unsigned int source, int len, unsigned short **srcp, unsigned short **limitp);
// misc.c
PICO_INTERNAL void SRAMWriteEEPROM(unsigned int d);
PICO_INTERNAL void SRAMUpdPending(unsigned int a, unsigned int d);
PICO_INTERNAL_ASM unsigned int SRAMReadEEPROM(void);
PICO_INTERNAL void EEPROM_write(unsigned int d);
PICO_INTERNAL void EEPROM_upd_pending(unsigned int a, unsigned int d);
PICO_INTERNAL_ASM unsigned int EEPROM_read(void);
PICO_INTERNAL_ASM void memcpy16(unsigned short *dest, unsigned short *src, int count);
PICO_INTERNAL_ASM void memcpy16bswap(unsigned short *dest, void *src, int count);
PICO_INTERNAL_ASM void memcpy32(int *dest, int *src, int count); // 32bit word count
@ -548,8 +551,6 @@ PICO_INTERNAL void z80_pack(unsigned char *data);
PICO_INTERNAL void z80_unpack(unsigned char *data);
PICO_INTERNAL void z80_reset(void);
PICO_INTERNAL void z80_exit(void);
void z80_map_set(unsigned long *map, int start_addr,
int end_addr, void *func_or_mh, int is_func);
// cd/misc.c
PICO_INTERNAL_ASM void wram_2M_to_1M(unsigned char *m);
@ -595,6 +596,8 @@ void PicoFrameDrawOnlyMS(void);
#define EL_SVP 0x00004000 /* SVP stuff */
#define EL_PICOHW 0x00008000 /* Pico stuff */
#define EL_IDLE 0x00010000 /* idle loop det. */
#define EL_CDREGS 0x00020000 /* MCD: register access */
#define EL_CDREG3 0x00040000 /* MCD: register 3 only */
#define EL_STATUS 0x40000000 /* status messages */
#define EL_ANOMALY 0x80000000 /* some unexpected conditions (during emulation) */