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Transferpak: Add support for RAM saving, and RTC saving (Visual Boy Advance format) 

Remove UpdateRTC() till I can get a better idea if the RTC code works properly.
This commit is contained in:
Emmet Young 2016-02-01 19:58:37 +11:00
parent 74d3825870
commit 258a5a0eb8
3 changed files with 71 additions and 81 deletions
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144
Source/Project64-core/N64System/Mips/GBCart.cpp
View File

@ -38,11 +38,8 @@ bool load_file(const char* filename, void** buffer, size_t* size)
FILE* fd;
size_t l_size;
void* l_buffer;
int err;
bool ret;
/* open file */
ret = false;
fd = fopen(filename, "rb");
if (fd == NULL)
{
@ -50,51 +47,48 @@ bool load_file(const char* filename, void** buffer, size_t* size)
}
/* obtain file size */
ret = false;
err = fseek(fd, 0, SEEK_END);
if (err != 0)
if (fseek(fd, 0, SEEK_END) != 0)
{
goto close_file;
fclose(fd);
return false;
}
err = ftell(fd);
if (err == -1)
l_size = (size_t)ftell(fd);
if (l_size == -1)
{
goto close_file;
fclose(fd);
return false;
}
l_size = (size_t)err;
err = fseek(fd, 0, SEEK_SET);
if (err != 0)
if (fseek(fd, 0, SEEK_SET) != 0)
{
goto close_file;
fclose(fd);
return false;
}
/* allocate buffer */
l_buffer = malloc(l_size);
if (l_buffer == NULL)
{
goto close_file;
fclose(fd);
return false;
}
/* copy file content to buffer */
ret = false;
err = fread(l_buffer, 1, l_size, fd);
if (err != l_size)
if (fread(l_buffer, 1, l_size, fd) != l_size)
{
free(l_buffer);
goto close_file;
fclose(fd);
return false;
}
/* commit buffer,size */
ret = true;
*buffer = l_buffer;
*size = l_size;
/* close file */
close_file:
fclose(fd);
return ret;
return true;
}
//--------------------------------------------------------------------------------------
@ -407,7 +401,6 @@ static void write_gb_cart_mbc3(struct gb_cart* gb_cart, uint16_t address, const
//Implement RTC timer / latch
if (gb_cart->rtc_latch == 0 && data[0] == 1)
{
correctRTC(gb_cart);
gb_cart->rtc_latch_second = gb_cart->rtc_second;
gb_cart->rtc_latch_minute = gb_cart->rtc_minute;
gb_cart->rtc_latch_hour = gb_cart->rtc_hour;
@ -475,6 +468,8 @@ static void write_gb_cart_mbc4(struct gb_cart* gb_cart, uint16_t address, const
static void read_gb_cart_mbc5(struct gb_cart* gb_cart, uint16_t address, uint8_t* data)
{
size_t offset;
if ((address < 0x4000)) //Rom Bank 0
{
memcpy(data, &gb_cart->rom[address], 0x20);
@ -760,43 +755,8 @@ static const struct parsed_cart_type* parse_cart_type(uint8_t cart_type)
}
}
void correctRTC(struct gb_cart* gb_cart)
bool GBCart::init_gb_cart(struct gb_cart* gb_cart, const char* gb_file)
{
time_t now, dif;
int days;
now = time(NULL);
dif = now - gb_cart->rtc_last_time;
gb_cart->rtc_second += (BYTE)(dif % 60);
dif /= 60;
gb_cart->rtc_minute += (BYTE)(dif % 60);
dif /= 60;
gb_cart->rtc_hour += (BYTE)(dif % 24);
dif /= 24;
days = (int)(gb_cart->rtc_day + ((gb_cart->rtc_day_carry & 1) << 8) + dif);
gb_cart->rtc_day = (days & 0xFF);
if (days > 255)
{
if (days > 511)
{
days &= 511;
gb_cart->rtc_day_carry |= 0x80;
}
if (days > 255)
{
gb_cart->rtc_day_carry = (gb_cart->rtc_day_carry & 0xFE) | (days > 255 ? 1 : 0);
}
}
gb_cart->rtc_last_time = now;
}
int GBCart::init_gb_cart(struct gb_cart* gb_cart, const char* gb_file)
{
int err;
const struct parsed_cart_type* type;
uint8_t* rom = NULL;
size_t rom_size = 0;
@ -804,16 +764,15 @@ int GBCart::init_gb_cart(struct gb_cart* gb_cart, const char* gb_file)
size_t ram_size = 0;
/* load GB cart ROM */
err = load_file(gb_file, (void**)&rom, &rom_size);
if (err == 0)
if (!load_file(gb_file, (void**)&rom, &rom_size))
{
return err;
return false;
}
if (rom_size < 0x8000)
{
err = 0;
goto free_rom;
free(rom);
return false;
}
/* get and parse cart type */
@ -821,8 +780,8 @@ int GBCart::init_gb_cart(struct gb_cart* gb_cart, const char* gb_file)
type = parse_cart_type(cart_type);
if (type == NULL)
{
err = 0;
goto free_rom;
free(rom);
return false;
}
/* load ram (if present) */
@ -840,21 +799,26 @@ int GBCart::init_gb_cart(struct gb_cart* gb_cart, const char* gb_file)
if (ram_size != 0)
{
ram = (uint8_t*)malloc(ram_size);
if (ram == NULL)
if (type->extra_devices & GED_RTC)
{
err = 0;
goto free_rom;
ram_size += 0x30;
}
read_from_file("C:/Users/death/Desktop/pokemonsilver.sav", ram, ram_size + ((type->extra_devices & GED_RTC ) ? 0x30 : 0x00));
ram = (uint8_t*)malloc(ram_size );
if (ram == NULL)
{
free(rom);
return false;
}
read_from_file("C:/Users/death/Desktop/pokemonsilver.sav", ram, ram_size );
}
//If we have RTC we need to load in the data, we assume the save will use the VBA-M format
if (type->extra_devices & GED_RTC)
{
gbCartRTC rtc;
memcpy(&rtc, &ram[ram_size], 0x30);
memcpy(&rtc, &ram[ram_size-0x30], 0x30);
gb_cart->rtc_second = rtc.second;
gb_cart->rtc_minute = rtc.minute;
@ -867,8 +831,6 @@ int GBCart::init_gb_cart(struct gb_cart* gb_cart, const char* gb_file)
gb_cart->rtc_latch_day = rtc.latch_day;
gb_cart->rtc_latch_day_carry = rtc.latch_day_carry;
gb_cart->rtc_last_time = rtc.mapperLastTime;
correctRTC(gb_cart);
}
}
@ -882,11 +844,37 @@ int GBCart::init_gb_cart(struct gb_cart* gb_cart, const char* gb_file)
gb_cart->has_rtc = (type->extra_devices & GED_RTC) ? 1 : 0;
gb_cart->read_gb_cart = type->read_gb_cart;
gb_cart->write_gb_cart = type->write_gb_cart;
return 1;
return true;
}
free_rom:
free(rom);
return err;
void GBCart::save_gb_cart(struct gb_cart* gb_cart)
{
FILE *fRAM = fopen("C:/Users/death/Desktop/pokemonsilver.sav", "wb");
if (gb_cart->has_rtc)
{
fwrite(gb_cart->ram, 1, gb_cart->ram_size-0x30, fRAM);
gbCartRTC rtc;
rtc.second = gb_cart->rtc_second;
rtc.minute = gb_cart->rtc_minute;
rtc.hour = gb_cart->rtc_hour;
rtc.day = gb_cart->rtc_day;
rtc.day_carry = gb_cart->rtc_day_carry;
rtc.latch_second = gb_cart->rtc_latch_second;
rtc.latch_minute = gb_cart->rtc_latch_minute;
rtc.latch_hour = gb_cart->rtc_latch_hour;
rtc.latch_day = gb_cart->rtc_latch_day;
rtc.latch_day_carry = gb_cart->rtc_latch_day_carry;
rtc.mapperLastTime = gb_cart->rtc_last_time;
fwrite(&rtc, 1, 0x30, fRAM);
}
else
{
fwrite(gb_cart->ram, 1, gb_cart->ram_size, fRAM);
}
fclose(fRAM);
}
void GBCart::release_gb_cart(struct gb_cart* gb_cart)

3
Source/Project64-core/N64System/Mips/GBCart.h
View File

@ -63,8 +63,9 @@ struct gbCartRTC {
class GBCart
{
public:
static int init_gb_cart(struct gb_cart* gb_cart, const char* gb_file);
static bool init_gb_cart(struct gb_cart* gb_cart, const char* gb_file);
static void release_gb_cart(struct gb_cart* gb_cart);
static void save_gb_cart(struct gb_cart* gb_cart);
static void read_gb_cart(struct gb_cart* gb_cart, uint16_t address, uint8_t* data);
static void write_gb_cart(struct gb_cart* gb_cart, uint16_t address, const uint8_t* data);

3
Source/Project64-core/N64System/Mips/Trasferpak.cpp
View File

@ -22,7 +22,7 @@ uint16_t gb_cart_address(unsigned int bank, uint16_t address)
void Transferpak::Init()
{
memset(&tpak, 0, sizeof(tpak));
tpak.access_mode = (GBCart::init_gb_cart(&tpak.gb_cart, "C:/Users/death/Desktop/pokemonsilver.gbc") == 0) ? CART_NOT_INSERTED : CART_ACCESS_MODE_0;
tpak.access_mode = (!GBCart::init_gb_cart(&tpak.gb_cart, "C:/Users/death/Desktop/pokemonsilver.gbc")) ? CART_NOT_INSERTED : CART_ACCESS_MODE_0;
tpak.access_mode_changed = 0x44;
}
@ -113,6 +113,7 @@ void Transferpak::WriteTo(uint16_t address, uint8_t * data)
if (tpak.enabled)
{
GBCart::write_gb_cart(&tpak.gb_cart, gb_cart_address(tpak.bank, address), data);
GBCart::save_gb_cart(&tpak.gb_cart);
}
}
}