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megacd: support per-game cd_bios.rom and cart.rom

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This commit is contained in:
sorgelig
2020-06-01 08:55:27 +08:00
parent 509f39098a
commit a4ef4b6092
2 changed files with 42 additions and 30 deletions
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53
support/megacd/megacd.cpp
View File

@@ -8,11 +8,12 @@
#include "../../user_io.h"
#include "../../spi.h"
#include "../../hardware.h"
#include "../../menu.h"
#include "megacd.h"
#define SAVE_IO_INDEX 5 // fake download to trigger save loading
static int loaded = 0, unloaded = 0, need_reset=0;
static int need_reset=0;
static uint8_t has_command = 0;
void mcd_poll()
@@ -71,37 +72,63 @@ void mcd_poll()
DisableIO();
}
static char buf[1024];
static void mcd_mount_save(const char *filename)
{
user_io_set_index(SAVE_IO_INDEX);
user_io_set_download(1);
static char name[1024];
FileGenerateSavePath(filename, name);
user_io_file_mount(name, 0, 1);
if (strlen(filename))
{
FileGenerateSavePath(filename, buf);
user_io_file_mount(buf, 0, 1);
}
else
{
user_io_file_mount("");
}
user_io_set_download(0);
}
static int mcd_load_rom(const char *basename, const char *name, int sub_index)
{
strcpy(buf, basename);
char *p = strrchr(buf, '/');
if (p)
{
p++;
strcpy(p, name);
if (user_io_file_tx(buf, sub_index << 6)) return 1;
}
return 0;
}
void mcd_set_image(int num, const char *filename)
{
(void)num;
cdd.Unload();
unloaded = 1;
cdd.status = CD_STAT_OPEN;
if (*filename) {
mcd_mount_save("");
sprintf(buf, "%s/boot.rom", HomeDir());
int loaded = user_io_file_tx(buf);
if (!loaded) Info("CD BIOS not found!", 4000);
mcd_mount_save(filename);
if (cdd.Load(filename) > 0) {
loaded = 1;
if (loaded && *filename)
{
if (cdd.Load(filename) > 0)
{
cdd.status = cdd.loaded ? CD_STAT_STOP : CD_STAT_NO_DISC;
cdd.latency = 10;
cdd.SendData = mcd_send_data;
mcd_load_rom(filename, "cd_bios.rom", 0);
mcd_load_rom(filename, "cart.rom", 1);
mcd_mount_save(filename);
}
else {
else
{
cdd.status = CD_STAT_NO_DISC;
}
}

19
support/megacd/megacdd.cpp
View File

@@ -235,7 +235,7 @@ int cdd_t::LoadCUE(const char* filename) {
int cdd_t::Load(const char *filename)
{
//char fname[1024 + 10];
static char header[1024];
static char header[32];
fileTYPE *fd_img;
Unload();
@@ -255,22 +255,7 @@ int cdd_t::Load(const char *filename)
}
else
{
FileReadAdv(fd_img, header, 0x10);
if (!memcmp("SEGADISCSYSTEM", header, 14))
{
this->sectorSize = 2352;
}
}
if (this->sectorSize)
{
FileReadAdv(fd_img, header + 0x10, 0x200);
FileSeek(fd_img, 0, SEEK_SET);
}
else
{
FileClose(fd_img);
return (-1);
this->sectorSize = 2352;
}
printf("\x1b[32mMCD: Sector size = %u, Track 0 end = %u\n\x1b[0m", this->sectorSize, this->toc.tracks[0].end);