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cd: switch to CD controller code from genplus

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same license, much cleaner code
using own dma code though..
This commit is contained in:
notaz 2013-10-05 04:14:45 +03:00
parent a6523294e2
commit 3f23709ef3
14 changed files with 1212 additions and 807 deletions
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83
pico/pico_int.h
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@ -417,38 +417,44 @@ struct mcd_misc
typedef struct
{
unsigned char bios[0x20000]; // 000000: 128K
union { // 020000: 512K
unsigned char prg_ram[0x80000];
unsigned char prg_ram_b[4][0x20000];
};
union { // 0a0000: 256K
struct {
unsigned char word_ram2M[0x40000];
unsigned char unused0[0x20000];
};
struct {
unsigned char unused1[0x20000];
unsigned char word_ram1M[2][0x20000];
};
};
union { // 100000: 64K
unsigned char pcm_ram[0x10000];
unsigned char pcm_ram_b[0x10][0x1000];
};
// FIXME: should be short
unsigned char s68k_regs[0x200]; // 110000: GA, not CPU regs
unsigned char bram[0x2000]; // 110200: 8K
struct mcd_misc m; // 112200: misc
struct mcd_pcm pcm; // 112240:
_scd_toc TOC; // not to be saved
CDD cdd;
CDC cdc;
_scd scd;
int pcm_mixbuf[PCM_MIXBUF_LEN * 2];
int pcm_mixpos;
char pcm_mixbuf_dirty;
char pcm_regs_dirty;
unsigned char bios[0x20000]; // 000000: 128K
union { // 020000: 512K
unsigned char prg_ram[0x80000];
unsigned char prg_ram_b[4][0x20000];
};
union { // 0a0000: 256K
struct {
unsigned char word_ram2M[0x40000];
unsigned char unused0[0x20000];
};
struct {
unsigned char unused1[0x20000];
unsigned char word_ram1M[2][0x20000];
};
};
union { // 100000: 64K
unsigned char pcm_ram[0x10000];
unsigned char pcm_ram_b[0x10][0x1000];
};
union {
unsigned char s68k_regs[0x200]; // 110000: GA, not CPU regs
union {
struct {
unsigned char h;
unsigned char l;
} byte;
} regs[0x200/2];
};
unsigned char bram[0x2000]; // 110200: 8K
struct mcd_misc m; // 112200: misc
struct mcd_pcm pcm; // 112240:
_scd_toc TOC; // not to be saved
CDD cdd;
_scd scd;
int pcm_mixbuf[PCM_MIXBUF_LEN * 2];
int pcm_mixpos;
char pcm_mixbuf_dirty;
char pcm_regs_dirty;
} mcd_state;
// XXX: this will need to be reworked for cart+cd support.
@ -610,6 +616,18 @@ void PicoWrite16_io(unsigned int a, unsigned int d);
// pico/memory.c
PICO_INTERNAL void PicoMemSetupPico(void);
// cd/cdc.c
void cdc_init(void);
void cdc_reset(void);
int cdc_context_save(unsigned char *state);
int cdc_context_load(unsigned char *state);
int cdc_context_load_old(unsigned char *state);
void cdc_dma_update(void);
int cdc_decoder_update(unsigned char header[4]);
void cdc_reg_w(unsigned char data);
unsigned char cdc_reg_r(void);
unsigned short cdc_host_r(void);
// cd/gfx.c
void gfx_init(void);
void gfx_start(unsigned int base);
@ -706,6 +724,7 @@ void SekTrace(int is_s68k);
PICO_INTERNAL void SekInitS68k(void);
PICO_INTERNAL int SekResetS68k(void);
PICO_INTERNAL int SekInterruptS68k(int irq);
void SekInterruptClearS68k(int irq);
// sound/sound.c
PICO_INTERNAL void cdda_start_play();