eaw/Main_MiSTer
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

SNES: add Competition Cart support. (#1075)

Browse Source 
* SNES: add Competition Cart support.

* SNES: add PowerFest 94 1m cart recognition.
This commit is contained in:
Sergiy Dvodnenko
2025-12-21 09:25:22 +02:00
committed by GitHub
parent d16bc7332f
commit 2e1653f803
1 changed files with 38 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
support/snes/snes.cpp
View File

@@ -127,6 +127,21 @@ static uint32_t find_header(const uint8_t *data, uint32_t size)
return score_ex ? 0x40ffc0 : 0;
}
const char snes_cc92_header[] = {
0x00, 0x08, 0x22, 0x02, 0x1C, 0x00, 0x10, 0x00, 0x08, 0x65, 0x80, 0x84, 0x20, 0x00, 0x22, 0x25,
0x00, 0x83, 0x0C, 0x80, 0x10, 0x00, 0x00, 0xA0, 0x80, 0x01, 0x80, 0x80, 0x00, 0x01, 0x02, 0x2D
};
const char snes_pf94_10k_header[] = {
0xC9, 0x80, 0x80, 0x44, 0x15, 0x00, 0x62, 0x09, 0x29, 0xA0, 0x52, 0x70, 0x50, 0x12, 0x05, 0x35,
0x31, 0x63, 0xC0, 0x22, 0x01, 0x80, 0xC2, 0x3A, 0x6C, 0xB0, 0xE8, 0x4A, 0x11, 0x20, 0xC0, 0xF8
};
const char snes_pf94_1m_header[] = {
0x50, 0x52, 0x45, 0x48, 0x49, 0x53, 0x54, 0x4F, 0x52, 0x49, 0x4B, 0x20, 0x4D, 0x41, 0x4E, 0x20,
0x20, 0x20, 0x20, 0x20, 0x20, 0x30, 0x00, 0x0A, 0x00, 0x01, 0x33, 0x00, 0xFF, 0xFF, 0x00, 0x00,
0xFF, 0xFF, 0xFF, 0xFF, 0x2B, 0x80, 0x2B, 0x80, 0x2B, 0x80, 0xFE, 0x91, 0x2B, 0x80, 0xA4, 0xF7,
0xFF, 0xFF, 0xFF, 0xFF, 0x2B, 0x80, 0x2B, 0x80, 0x2B, 0x80, 0x75, 0xF7, 0x00, 0x80, 0xA4, 0xF7
};
uint8_t* snes_get_header(fileTYPE *f)
{
memset(hdr, 0, sizeof(hdr));
@@ -172,6 +187,15 @@ uint8_t* snes_get_header(fileTYPE *f)
}
}
bool is_cc92 = false, is_pf94 = false;
if (!memcmp(buf + 0x7FC0, snes_cc92_header, 32)) {
is_cc92 = true;
}
if (!memcmp(buf + 0x7FC0, snes_pf94_10k_header, 32) ||
!memcmp(buf + 0x7FC0, snes_pf94_1m_header, 64)) {
is_pf94 = true;
}
if (addr)
{
uint8_t ramsz = buf[addr + RamSize];
@@ -206,6 +230,7 @@ uint8_t* snes_get_header(fileTYPE *f)
if (is_bsx_bios) {
hdr[1] = 0x30;
}
//Sufami Turbo type 2
else if (is_sufami_base) {
hdr[1] = 0x20 | (is_sufami_turbo ? 8 : 0) | (is_sufami_bios ? 4 : 0);
const uint8_t rom_sz_tbl[9] = { 0,7,8,9,9,10,10,10,10 };
@@ -213,9 +238,19 @@ uint8_t* snes_get_header(fileTYPE *f)
romsz = buf[addr + 0x36] >= 8 ? rom_sz_tbl[8] : rom_sz_tbl[buf[addr + 0x36] & 0x0F];
ramsz = buf[addr + 0x37] >= 4 ? ram_sz_tbl[4] : ram_sz_tbl[buf[addr + 0x37] & 0x07];
}
//Campus Challenge '92, type E (DSP1A)
else if (is_cc92) {
hdr[1] = 0xE4;
ramsz = 3;
}
//PowerFest '94, type F (DSP1A)
else if (is_pf94) {
hdr[1] = 0xF4;
ramsz = 3;
}
else {
//DSPn types 8..B
//DSPn types 8..B, OBC1 type C
if (buf[addr + Mapper] == 0x20 && buf[addr + RomType] == 0x03)
{ //DSP1
hdr[1] |= 0x84;
@@ -294,13 +329,13 @@ uint8_t* snes_get_header(fileTYPE *f)
hdr[1] |= 0x70;
}
//1,E..F - reserved for other mappers.
//1 - reserved for other mappers.
}
hdr[2] = 0;
//PAL Regions
if (((buf[addr + CartRegion] >= 0x02 && buf[addr + CartRegion] <= 0x0C) || buf[addr + CartRegion] == 0x11) && !is_sufami_base)
if (((buf[addr + CartRegion] >= 0x02 && buf[addr + CartRegion] <= 0x0C) || buf[addr + CartRegion] == 0x11) && !is_sufami_base && !is_cc92 && !is_pf94)
{
hdr[3] |= 1;
}