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Implemented preliminary S3 ViRGE 2D blitter emulation.

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Misc ViRGE fixes.
Changes to memory mapping.
Changes to PCI handling.
Disabled 'AMI WinBIOS 486 PCI' due to incomplete chipset emulation.
Invalid GUS register reads no longer kill the emulator.
This commit is contained in:
TomW 2014-03-20 14:03:55 +00:00
commit 2ca4ead570
49 changed files with 2078 additions and 700 deletions
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33
src/mem.h
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@ -14,10 +14,19 @@ typedef struct mem_mapping_t
void (*write_w)(uint32_t addr, uint16_t val, void *priv);
void (*write_l)(uint32_t addr, uint32_t val, void *priv);
uint8_t *exec;
uint32_t flags;
void *p;
} mem_mapping_t;
extern uint8_t *ram,*rom,*vram,*vrom;
/*Only present on external bus (ISA/PCI)*/
#define MEM_MAPPING_EXTERNAL 1
/*Only present on internal bus (RAM)*/
#define MEM_MAPPING_INTERNAL 2
extern uint8_t *ram,*rom;
extern uint8_t romext[32768];
extern int readlnum,writelnum;
extern int memspeed[11];
@ -34,6 +43,8 @@ void mem_mapping_add(mem_mapping_t *mapping,
void (*write_b)(uint32_t addr, uint8_t val, void *p),
void (*write_w)(uint32_t addr, uint16_t val, void *p),
void (*write_l)(uint32_t addr, uint32_t val, void *p),
uint8_t *exec,
uint32_t flags,
void *p);
void mem_mapping_set_handler(mem_mapping_t *mapping,
uint8_t (*read_b)(uint32_t addr, void *p),
@ -44,10 +55,22 @@ void mem_mapping_set_handler(mem_mapping_t *mapping,
void (*write_l)(uint32_t addr, uint32_t val, void *p));
void mem_mapping_set_p(mem_mapping_t *mapping, void *p);
void mem_mapping_set_addr(mem_mapping_t *mapping, uint32_t base, uint32_t size);
void mem_mapping_set_exec(mem_mapping_t *mapping, uint8_t *exec);
void mem_mapping_disable(mem_mapping_t *mapping);
void mem_mapping_enable(mem_mapping_t *mapping);
void mem_bios_set_state(uint32_t base, uint32_t size, int read_ram, int write_ram);
void mem_set_mem_state(uint32_t base, uint32_t size, int state);
#define MEM_READ_ANY 0x00
#define MEM_READ_INTERNAL 0x10
#define MEM_READ_EXTERNAL 0x20
#define MEM_READ_MASK 0xf0
#define MEM_WRITE_ANY 0x00
#define MEM_WRITE_INTERNAL 0x01
#define MEM_WRITE_EXTERNAL 0x02
#define MEM_WRITE_DISABLED 0x03
#define MEM_WRITE_MASK 0x0f
extern int mem_a20_alt;
extern int mem_a20_key;
@ -68,6 +91,8 @@ uint8_t mem_read_bios(uint32_t addr, void *priv);
uint16_t mem_read_biosw(uint32_t addr, void *priv);
uint32_t mem_read_biosl(uint32_t addr, void *priv);
FILE *romfopen(char *fn, char *mode);
void mem_write_null(uint32_t addr, uint8_t val, void *p);
void mem_write_nullw(uint32_t addr, uint16_t val, void *p);
void mem_write_nulll(uint32_t addr, uint32_t val, void *p);
int mem_load_video_bios();
FILE *romfopen(char *fn, char *mode);