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Detect ps1 disks

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This commit is contained in:
kenshen112 2020-07-18 14:49:22 -07:00
parent 6893405486
commit 1306254688
2 changed files with 45 additions and 12 deletions
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1
.gitignore vendored
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@ -21,3 +21,4 @@ Makefile*
*.snp
*_log.txt
*.log
.vscode/settings.json

56
src/core/iop/cdvd/cdvd.cpp
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@ -294,24 +294,56 @@ bool CDVD_Drive::load_disc(const char *name, CDVD_CONTAINER a_container)
LBA = *(uint16_t*)&pvd_sector[128];
// Detecting disc type by abitrary variables
// 650MB (681574400 bytes) is the maximum disc size for CD's
// Just in case we can check if the path table is at sector 257 which is a forced location for DVD's
// However some CD's do use 257 for the path table location, but it's not common
if ((volume_size * LBA) <= 681574400 || path_table_sector != 257)
disc_type = CDVD_DISC_PS2CD;
else
disc_type = CDVD_DISC_PS2DVD;
printf("%s Detected\n", disc_type == CDVD_DISC_PS2CD ? "CD" : "DVD");
printf("[CDVD] PVD LBA: $%08X\n", LBA);
root_location = *(uint32_t*)&pvd_sector[156 + 2];
root_len = *(uint32_t*)&pvd_sector[156 + 10];
printf("[CDVD] Root dir len: %d\n", *(uint16_t*)&pvd_sector[156]);
printf("[CDVD] Extent loc: $%08lX\n", root_location * LBA);
printf("[CDVD] Extent len: $%08lX\n", root_len);
// Detecting disc type by abitrary variables
// 650MB (681574400 bytes) is the maximum disc size for CD's
// Just in case we can check if the path table is at sector 257 which is a forced location for DVD's
// However some CD's do use 257 for the path table location, but it's not common
if ((volume_size * LBA) <= 681574400 || path_table_sector != 257)
{
uint32_t cnf_size;
char* cnf = (char*)read_file("SYSTEM.CNF;1", cnf_size);
if (!cnf)
return "h";
char* pos = strstr(cnf, "BOOT ");
if (pos == NULL)
{
pos = strstr(cnf, "BOOT2 "); // PS2 disk
if (pos == NULL)
{
return false;
}
else
{
disc_type = CDVD_DISC_PS2CD;
return true;
}
}
else
{
printf("Detected PS1 \n");
disc_type = CDVD_DISC_PSCD;
return true;
}
}
else
disc_type = CDVD_DISC_PS2DVD;
printf("%s Detected\n", disc_type == CDVD_DISC_PS2CD ? "CD" : "DVD");
printf("[CDVD] PVD LBA: $%08X\n", LBA);
return true;
}