mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-10 21:05:12 +01:00
[Core/CD] added CD-AUDIO & CD+G support
This commit is contained in:
parent
1ee664873e
commit
a07f7a3d24
@ -514,7 +514,7 @@ void sms_cart_init(void)
|
||||
if (config.bios & 1)
|
||||
{
|
||||
/* load BIOS file */
|
||||
int bios_size = load_bios();
|
||||
int bios_size = load_bios(system_hw);
|
||||
|
||||
if (bios_size > 0xC000)
|
||||
{
|
||||
|
814
core/cd_hw/cdd.c
814
core/cd_hw/cdd.c
File diff suppressed because it is too large
Load Diff
@ -58,9 +58,6 @@
|
||||
#define CD_STOP 0x09
|
||||
#define CD_END 0x0C
|
||||
|
||||
/* CD blocks scanning speed */
|
||||
#define CD_SCAN_SPEED 30
|
||||
|
||||
#define CD_MAX_TRACKS 100
|
||||
|
||||
/* CD track */
|
||||
@ -73,6 +70,7 @@ typedef struct
|
||||
int offset;
|
||||
int start;
|
||||
int end;
|
||||
int type;
|
||||
} track_t;
|
||||
|
||||
/* CD TOC */
|
||||
@ -81,6 +79,7 @@ typedef struct
|
||||
int end;
|
||||
int last;
|
||||
track_t tracks[CD_MAX_TRACKS];
|
||||
FILE *sub;
|
||||
} toc_t;
|
||||
|
||||
/* CDD hardware */
|
||||
|
@ -573,6 +573,13 @@ static unsigned int scd_read_byte(unsigned int address)
|
||||
s68k_poll_detect(1 << (address & 0x1f));
|
||||
}
|
||||
|
||||
/* Subcode buffer */
|
||||
else if (address >= 0xff8100)
|
||||
{
|
||||
/* 64 x 16-bit mirrored */
|
||||
address &= 0x17f;
|
||||
}
|
||||
|
||||
/* default registers */
|
||||
if (address & 1)
|
||||
{
|
||||
@ -663,6 +670,13 @@ static unsigned int scd_read_word(unsigned int address)
|
||||
s68k_poll_detect(3 << (address & 0x1e));
|
||||
}
|
||||
|
||||
/* Subcode buffer */
|
||||
else if (address >= 0xff8100)
|
||||
{
|
||||
/* 64 x 16-bit mirrored */
|
||||
address &= 0x17f;
|
||||
}
|
||||
|
||||
/* default registers */
|
||||
return scd.regs[(address >> 1) & 0xff].w;
|
||||
}
|
||||
|
145
core/loadrom.c
145
core/loadrom.c
@ -2,7 +2,7 @@
|
||||
* Genesis Plus
|
||||
* ROM Loading Support
|
||||
*
|
||||
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Charles Mac Donald (original code)
|
||||
* Copyright (C) 1998-2003 Charles Mac Donald (original code)
|
||||
* Copyright (C) 2007-2015 Eke-Eke (Genesis Plus GX)
|
||||
*
|
||||
* Redistribution and use of this code or any derivative works are permitted
|
||||
@ -389,11 +389,11 @@ void getrominfo(char *romheader)
|
||||
* Return loaded size (-1 if already loaded)
|
||||
*
|
||||
***************************************************************************/
|
||||
int load_bios(void)
|
||||
int load_bios(int system)
|
||||
{
|
||||
int size = 0;
|
||||
|
||||
switch (system_hw)
|
||||
switch (system)
|
||||
{
|
||||
case SYSTEM_MCD:
|
||||
{
|
||||
@ -532,10 +532,11 @@ int load_rom(char *filename)
|
||||
int i, size;
|
||||
|
||||
#ifdef USE_DYNAMIC_ALLOC
|
||||
/* allocate memory for Cartridge /CD hardware buffer if required */
|
||||
if (ext == NULL)
|
||||
if (!ext)
|
||||
{
|
||||
/* allocate memory for Cartridge / CD hardware if required */
|
||||
ext = (external_t *)malloc(sizeof(external_t));
|
||||
if (!ext) return (0);
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -550,30 +551,28 @@ int load_rom(char *filename)
|
||||
cdd.loaded = 0;
|
||||
}
|
||||
|
||||
/* auto-detect CD image files */
|
||||
/* auto-detect CD image file */
|
||||
size = cdd_load(filename, (char *)(cart.rom));
|
||||
if (size < 0)
|
||||
{
|
||||
/* error opening file */
|
||||
return 0;
|
||||
return (0);
|
||||
}
|
||||
|
||||
if (size > 0)
|
||||
/* CD image file ? */
|
||||
if (size)
|
||||
{
|
||||
/* CD image file loaded */
|
||||
/* enable CD hardware */
|
||||
system_hw = SYSTEM_MCD;
|
||||
|
||||
/* boot from CD hardware */
|
||||
scd.cartridge.boot = 0x00;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* load file into ROM buffer */
|
||||
char extension[4];
|
||||
size = load_archive(filename, cart.rom, sizeof(cart.rom), extension);
|
||||
if (!size)
|
||||
{
|
||||
/* mark all BOOTROM as unloaded since they could have been overwritten */
|
||||
system_bios &= ~(0x10 | SYSTEM_SMS | SYSTEM_GG);
|
||||
return 0;
|
||||
}
|
||||
size = load_archive(filename, cart.rom, cdd.loaded ? 0x800000 : MAXROMSIZE, extension);
|
||||
|
||||
/* mark BOOTROM as unloaded if they have been overwritten by cartridge ROM */
|
||||
if (size > 0x800000)
|
||||
@ -586,8 +585,16 @@ int load_rom(char *filename)
|
||||
/* Master System or Game Gear BIOS ROM are loaded within $400000-$4FFFFF area */
|
||||
system_bios &= ~(SYSTEM_SMS | SYSTEM_GG);
|
||||
}
|
||||
else if (size <= 0)
|
||||
{
|
||||
/* mark all BOOTROM as unloaded since they could have been overwritten */
|
||||
system_bios &= ~(0x10 | SYSTEM_SMS | SYSTEM_GG);
|
||||
|
||||
/* error loading file */
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* convert lower case to upper case */
|
||||
/* convert lower case file extension to upper case */
|
||||
*(uint32 *)(extension) &= 0xdfdfdfdf;
|
||||
|
||||
/* auto-detect system hardware from ROM file extension */
|
||||
@ -608,7 +615,7 @@ int load_rom(char *filename)
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Mega Drive hardware (Genesis mode) */
|
||||
/* default is Mega Drive / Genesis hardware (16-bit mode) */
|
||||
system_hw = SYSTEM_MD;
|
||||
|
||||
/* decode .MDX format */
|
||||
@ -641,7 +648,7 @@ int load_rom(char *filename)
|
||||
size -= 512;
|
||||
memcpy (cart.rom, cart.rom + 512, size);
|
||||
|
||||
/* assume interleaved Genesis ROM format (.smd) */
|
||||
/* assume interleaved Mega Drive / Genesis ROM format (.smd) */
|
||||
if (system_hw == SYSTEM_MD)
|
||||
{
|
||||
for (i = 0; i < (size / 0x4000); i++)
|
||||
@ -661,26 +668,9 @@ int load_rom(char *filename)
|
||||
/* set console region */
|
||||
get_region((char *)(cart.rom));
|
||||
|
||||
/* CD image file */
|
||||
if (system_hw == SYSTEM_MCD)
|
||||
{
|
||||
/* load CD BOOT ROM */
|
||||
if (!load_bios())
|
||||
{
|
||||
/* unmount CD image */
|
||||
cdd_unload();
|
||||
|
||||
/* error loading CD BOOT ROM */
|
||||
return (0);
|
||||
}
|
||||
|
||||
/* boot from CD */
|
||||
scd.cartridge.boot = 0x00;
|
||||
}
|
||||
|
||||
#ifdef LSB_FIRST
|
||||
/* 16-bit ROM specific */
|
||||
else if (system_hw == SYSTEM_MD)
|
||||
if (system_hw == SYSTEM_MD)
|
||||
{
|
||||
/* Byteswap ROM to optimize 16-bit access */
|
||||
for (i = 0; i < cart.romsize; i += 2)
|
||||
@ -701,14 +691,28 @@ int load_rom(char *filename)
|
||||
|
||||
/* Save auto-detected system hardware */
|
||||
romtype = system_hw;
|
||||
|
||||
/* CD image file */
|
||||
if (system_hw == SYSTEM_MCD)
|
||||
{
|
||||
/* try to load CD BOOTROM for selected region */
|
||||
if (!load_bios(SYSTEM_MCD))
|
||||
{
|
||||
/* unmount CD image */
|
||||
cdd_unload();
|
||||
|
||||
/* error booting from CD */
|
||||
return (0);
|
||||
}
|
||||
}
|
||||
|
||||
/* CD BOOTROM */
|
||||
if (strstr(rominfo.ROMType, "BR") != NULL)
|
||||
else if (strstr(rominfo.ROMType, "BR") != NULL)
|
||||
{
|
||||
/* enable CD hardware */
|
||||
system_hw = SYSTEM_MCD;
|
||||
|
||||
/* boot from CD */
|
||||
/* boot from CD hardware */
|
||||
scd.cartridge.boot = 0x00;
|
||||
|
||||
/* copy ROM to BOOTROM area */
|
||||
@ -721,7 +725,26 @@ int load_rom(char *filename)
|
||||
system_bios = (system_bios & 0xf0) | (region_code >> 4);
|
||||
}
|
||||
|
||||
/* ROM cartridges with CD support */
|
||||
/* ROM cartridge with CD loaded */
|
||||
else if (cdd.loaded)
|
||||
{
|
||||
/* try to load CD BOOTROM */
|
||||
if (load_bios(SYSTEM_MCD))
|
||||
{
|
||||
/* enable CD hardware */
|
||||
system_hw = SYSTEM_MCD;
|
||||
|
||||
/* boot from cartridge */
|
||||
scd.cartridge.boot = 0x40;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* unmount CD image */
|
||||
cdd_unload();
|
||||
}
|
||||
}
|
||||
|
||||
/* ROM cartridge with CD support */
|
||||
else if ((strstr(rominfo.domestic,"FLUX") != NULL) ||
|
||||
(strstr(rominfo.domestic,"WONDER LIBRARY") != NULL) ||
|
||||
(strstr(rominfo.product,"T-5740") != NULL))
|
||||
@ -729,33 +752,23 @@ int load_rom(char *filename)
|
||||
/* check if console hardware is set to AUTO */
|
||||
if (!config.system)
|
||||
{
|
||||
/* auto-enable CD hardware */
|
||||
system_hw = SYSTEM_MCD;
|
||||
|
||||
/* try to load CD BOOTROM */
|
||||
if (load_bios())
|
||||
if (load_bios(SYSTEM_MCD))
|
||||
{
|
||||
char fname[256];
|
||||
int len = strlen(filename);
|
||||
|
||||
/* automatically try to load associated .iso file */
|
||||
while ((len && (filename[len] != '.')) || (len > 251)) len--;
|
||||
strncpy(fname, filename, len);
|
||||
strcpy(&fname[len], ".iso");
|
||||
cdd_load(fname, (char *)cdc.ram);
|
||||
|
||||
/* enable CD hardware */
|
||||
system_hw = SYSTEM_MCD;
|
||||
|
||||
/* boot from cartridge */
|
||||
scd.cartridge.boot = 0x40;
|
||||
|
||||
/* change ROM filename extension to .iso */
|
||||
while (len && (filename[len-1] != '.')) len--;
|
||||
if (len < 253)
|
||||
{
|
||||
strncpy(fname, filename, len);
|
||||
strcpy(&fname[len], "iso");
|
||||
}
|
||||
|
||||
/* automatically load associated .iso image */
|
||||
cdd_load(fname, (char *)cdc.ram);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* if not found, disable CD hardware */
|
||||
system_hw = SYSTEM_MD;
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -980,19 +993,19 @@ void get_region(char *romheader)
|
||||
if (system_hw == SYSTEM_MCD)
|
||||
{
|
||||
/* security code */
|
||||
switch (romheader[0x20b])
|
||||
switch ((unsigned char)romheader[0x20b])
|
||||
{
|
||||
case 0x7a:
|
||||
region_code = REGION_USA;
|
||||
break;
|
||||
|
||||
case 0x64:
|
||||
region_code = REGION_EUROPE;
|
||||
break;
|
||||
|
||||
default:
|
||||
case 0xa1:
|
||||
region_code = REGION_JAPAN_NTSC;
|
||||
break;
|
||||
|
||||
default:
|
||||
region_code = REGION_USA;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -2,7 +2,7 @@
|
||||
* Genesis Plus
|
||||
* ROM Loading Support
|
||||
*
|
||||
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Charles Mac Donald (original code)
|
||||
* Copyright (C) 1998-2003 Charles Mac Donald (original code)
|
||||
* Copyright (C) 2007-2015 Eke-Eke (Genesis Plus GX)
|
||||
*
|
||||
* Redistribution and use of this code or any derivative works are permitted
|
||||
@ -64,7 +64,7 @@ extern ROMINFO rominfo;
|
||||
extern uint8 romtype;
|
||||
|
||||
/* Function prototypes */
|
||||
extern int load_bios(void);
|
||||
extern int load_bios(int system);
|
||||
extern int load_rom(char *filename);
|
||||
extern void get_region(char *romheader);
|
||||
extern char *get_company(void);
|
||||
|
Loading…
Reference in New Issue
Block a user