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PSX: allow custom BIOS load.

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This commit is contained in:
Sorgelig
2022-05-03 01:05:13 +08:00
parent 03d96b7904
commit f2caf20c6d
1 changed files with 33 additions and 0 deletions
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33
support/psx/psx.cpp
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@@ -631,6 +631,13 @@ static void mount_cd(int size, int index)
user_io_bufferinvalidate(1);
}
static int load_bios(const char* filename)
{
int sz = FileLoad(filename, 0, 0);
if (sz != 512 * 1024) return 0;
return user_io_file_tx(filename, 0xC0);
}
void psx_mount_cd(int f_index, int s_index, const char *filename)
{
static char last_dir[1024] = {};
@@ -670,6 +677,32 @@ void psx_mount_cd(int f_index, int s_index, const char *filename)
if (p) *p = 0;
else *last_dir = 0;
if (reset)
{
int bios_loaded = 0;
// load cd_bios.rom from game directory
sprintf(buf, "%s/", last_dir);
p = strrchr(buf, '/');
if (p)
{
strcpy(p + 1, "cd_bios.rom");
bios_loaded = load_bios(buf);
}
// load cd_bios.rom from parent directory
if (!bios_loaded) {
strcpy(buf, last_dir);
p = strrchr(buf, '/');
if (p)
{
strcpy(p + 1, "cd_bios.rom");
bios_loaded = load_bios(buf);
}
}
}
if (!(user_io_status(0, 0, 1) >> 31)) psx_mount_save(last_dir);
}
}