Exemple #1
0
void __fastcall writemem_mapper_codies(UINT16 offset, UINT8 data)
{
    switch(offset & 0xC000)
    {
    case 0x0000:
        sms_mapper_w(1, data);
        return;
    case 0x4000:
        sms_mapper_w(2, data);
        return;
    case 0x8000:
        sms_mapper_w(3, data);
        return;
    }
}
Exemple #2
0
void __fastcall writemem_mapper_sega(UINT16 offset, UINT8 data)
{
    sms.wram[offset & 0x1fff] = data;

    if(offset >= 0xFFFC)
        sms_mapper_w(offset & 3, data);
}
Exemple #3
0
void system_load_state(void *fd)
{
    int i;
    uint8 reg[0x40];

    /* Initialize everything */
    cpu_reset();
    system_reset();

    /* Load VDP context */
    fread(&vdp, sizeof(t_vdp), 1, fd);

    /* Load SMS context */
    fread(&sms, sizeof(t_sms), 1, fd);

    /* Load Z80 context */
    fread(Z80_Context, sizeof(Z80_Regs), 1, fd);
    fread(&after_EI, sizeof(int), 1, fd);

    /* Load YM2413 registers */
    fread(reg, 0x40, 1, fd);

    /* Load SN76489 context */
    fread(&sn[0], sizeof(t_SN76496), 1, fd);

    /* Restore callbacks */
    z80_set_irq_callback(sms_irq_callback);

    cpu_readmap[0] = cart.rom + 0x0000; /* 0000-3FFF */
    cpu_readmap[1] = cart.rom + 0x2000;
    cpu_readmap[2] = cart.rom + 0x4000; /* 4000-7FFF */
    cpu_readmap[3] = cart.rom + 0x6000;
    cpu_readmap[4] = cart.rom + 0x0000; /* 0000-3FFF */
    cpu_readmap[5] = cart.rom + 0x2000;
    cpu_readmap[6] = sms.ram;
    cpu_readmap[7] = sms.ram;

    cpu_writemap[0] = sms.dummy;
    cpu_writemap[1] = sms.dummy;
    cpu_writemap[2] = sms.dummy;         
    cpu_writemap[3] = sms.dummy;
    cpu_writemap[4] = sms.dummy;         
    cpu_writemap[5] = sms.dummy;
    cpu_writemap[6] = sms.ram;           
    cpu_writemap[7] = sms.ram;

    sms_mapper_w(3, sms.fcr[3]);
    sms_mapper_w(2, sms.fcr[2]);
    sms_mapper_w(1, sms.fcr[1]);
    sms_mapper_w(0, sms.fcr[0]);

    /* Force full pattern cache update */
    is_vram_dirty = 1;
    memset(vram_dirty, 1, 0x200);

    /* Restore palette */
    for(i = 0; i < PALETTE_SIZE; i += 1)
        palette_sync(i);

    /* Restore sound state */
    if(snd.enabled)
    {
        /* Clear YM2413 context */
        OPLL_reset(opll) ;
        OPLL_reset_patch(opll,0) ;            /* if use default voice data. */ 

        /* Restore rhythm enable first */
        ym2413_write(0, 0, 0x0E);
        ym2413_write(0, 1, reg[0x0E]);

        /* User instrument settings */
        for(i = 0x00; i <= 0x07; i += 1)
        {
            ym2413_write(0, 0, i);
            ym2413_write(0, 1, reg[i]);
        }

        /* Channel frequency */
        for(i = 0x10; i <= 0x18; i += 1)
        {
            ym2413_write(0, 0, i);
            ym2413_write(0, 1, reg[i]);
        }

        /* Channel frequency + ctrl. */
        for(i = 0x20; i <= 0x28; i += 1)
        {
            ym2413_write(0, 0, i);
            ym2413_write(0, 1, reg[i]);
        }

        /* Instrument and volume settings  */
        for(i = 0x30; i <= 0x38; i += 1)
        {
            ym2413_write(0, 0, i);
            ym2413_write(0, 1, reg[i]);
        }
    }
}
Exemple #4
0
int load_state_from_mem(void *stor)
{
    int i;

    /* Initialize everything */
    z80_reset(0);
    z80_set_irq_callback(sms_irq_callback);
    system_reset();
    if(snd.enabled)
        sound_reset();

    //davex: header is not saved in memory state
    

    // Load VDP context 
    memcpy(&vdp, stor, sizeof(vdp_t)); //VDP context
    stor += sizeof(vdp_t);
    
    
    //Load SMS context (1/3)
    memcpy(&sms, stor, sizeof(sms_t) );
    stor += sizeof(sms_t); 
    
    //Load SMS context (2/3)
    memcpy(&cart.fcr[0],stor, 1 );
    stor += 1; 
    memcpy(&cart.fcr[1],stor, 1 );
    stor += 1; 
    memcpy(&cart.fcr[2],stor, 1 );
    stor += 1; 
    memcpy(&cart.fcr[3],stor, 1 );
    stor += 1; 
        
    //Load SMS context (3/3)
    memcpy(&cart.sram, stor, 0x8000);
    stor += 0x8000;
    

    // Load Z80 context 
    memcpy(Z80_Context, stor, sizeof(Z80_Regs) );
    stor += sizeof(Z80_Regs);
    memcpy(&after_EI, stor,  sizeof(int) );
    stor += sizeof(int);
    
    
    // Load YM2413 context
    FM_SetContext(stor);
    stor += FM_GetContextSize();
    
    // Load SN76489 context
    SN76489_SetContext(0, stor);
   

    /* Restore callbacks */
    z80_set_irq_callback(sms_irq_callback);

    for(i = 0x00; i <= 0x2F; i++)
    {
        cpu_readmap[i]  = &cart.rom[(i & 0x1F) << 10];
        cpu_writemap[i] = dummy_write;
    }

    for(i = 0x30; i <= 0x3F; i++)
    {
        cpu_readmap[i] = &sms.wram[(i & 0x07) << 10];
        cpu_writemap[i] = &sms.wram[(i & 0x07) << 10];
    }

    sms_mapper_w(3, cart.fcr[3]);
    sms_mapper_w(2, cart.fcr[2]);
    sms_mapper_w(1, cart.fcr[1]);
    sms_mapper_w(0, cart.fcr[0]);

    /* Force full pattern cache update */
    bg_list_index = 0x200;
    for(i = 0; i < 0x200; i++)
    {
        bg_name_list[i] = i;
        bg_name_dirty[i] = -1;
    }

    /* Restore palette */
    for(i = 0; i < PALETTE_SIZE; i++)
        palette_sync(i, 1);
 
    viewport_check();

    return 1;
}
Exemple #5
0
void system_load_state(void *fd)
{
    int i;
    uint8 *buf;
    char id[4];
    uint16 version;

    /* Initialize everything */
    z80_reset(0);
    z80_set_irq_callback(sms_irq_callback);
    system_reset();
    if(snd.enabled)
        sound_reset();

    /* Read header */
    fread(id, 4, 1, fd);
    fread(&version, 2, 1, fd);

    /* Load VDP context */
    fread(&vdp, sizeof(vdp_t), 1, fd);

    /* Load SMS context */
    fread(&sms, sizeof(sms_t), 1, fd);

    cart.fcr[0] = fgetc(fd);
    cart.fcr[1] = fgetc(fd);
    cart.fcr[2] = fgetc(fd);
    cart.fcr[3] = fgetc(fd);
    fread(cart.sram, 0x8000, 1, fd);

    /* Load Z80 context */
    fread(Z80_Context, sizeof(Z80_Regs), 1, fd);
    fread(&after_EI, sizeof(int), 1, fd);

    /* Load YM2413 context */
    buf = malloc(FM_GetContextSize());
    fread(buf, FM_GetContextSize(), 1, fd);
    FM_SetContext(buf);
    free(buf);

    /* Load SN76489 context */
    buf = malloc(SN76489_GetContextSize());
    fread(buf, SN76489_GetContextSize(), 1, fd);
    SN76489_SetContext(0, buf);
    free(buf);

    /* Restore callbacks */
    z80_set_irq_callback(sms_irq_callback);

    for(i = 0x00; i <= 0x2F; i++)
    {
        cpu_readmap[i]  = &cart.rom[(i & 0x1F) << 10];
        cpu_writemap[i] = dummy_write;
    }

    for(i = 0x30; i <= 0x3F; i++)
    {
        cpu_readmap[i] = &sms.wram[(i & 0x07) << 10];
        cpu_writemap[i] = &sms.wram[(i & 0x07) << 10];
    }

    sms_mapper_w(3, cart.fcr[3]);
    sms_mapper_w(2, cart.fcr[2]);
    sms_mapper_w(1, cart.fcr[1]);
    sms_mapper_w(0, cart.fcr[0]);

    /* Force full pattern cache update */
    bg_list_index = 0x200;
    for(i = 0; i < 0x200; i++)
    {
        bg_name_list[i] = i;
        bg_name_dirty[i] = -1;
    }

    /* Restore palette */
    for(i = 0; i < PALETTE_SIZE; i++)
        palette_sync(i, 1);

    viewport_check();
}