ApacheThunder/GBA-Exploader
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Implement second SRAM bank for SuperCards.

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* Implemented unused second SRAM bank for SuperCards for storing
GBA-Exploader metadata. Note that game patches are not yet updated for
this so games like Pokémon can't use it yet.
This commit is contained in:
ApacheThunder 2025-05-25 13:39:52 -05:00
parent c779a90200
commit f9251ba0ce
6 changed files with 56 additions and 20 deletions
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2
Makefile
View File

@ -9,7 +9,7 @@ export TARGET := GBA_ExpLoader
export TOPDIR := $(CURDIR)
export VERSION_MAJOR := 0
export VERSION_MINOR := 66
export VERSION_MINOR := 67
export VERSTRING := $(VERSION_MAJOR).$(VERSION_MINOR)
# GMAE_ICON is the image used to create the game icon, leave blank to use default rule

1
arm9/include/dsCard.itcm.cpp
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@ -265,6 +265,7 @@ u32 CheckSuperCardID() {
// _SC_changeMode16(0x1510);
*(vu16*)(FlashBase) = 0x4D54;
if (*(vu16*)(FlashBase) == 0x4D54) {
_SC_changeMode(SC_MODE_RAM_RO);
ID = 0x227E2202;
return 0x227E0000;
}

2
arm9/include/io_sc_common.c
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@ -34,7 +34,7 @@
#endif
/*-----------------------------------------------------------------
_SC_changeMode (was SC_Unlock)
_SC_changeMode (was SC_Unlock) (toggling read/write of PSRAM also toggles SRAM bank!)
Added by MightyMax
Modified by Chishm
Modified again by loopy

12
arm9/source/ctrl_tbl.cpp
View File

@ -35,16 +35,16 @@ void ctrl_get() {
memset((u8*)&ctrl, 0, sizeof(struct ctrl_tbl));
if (((carttype != 5) && !isSuperCard && !isOmega) || isOmegaDE) {
if (((carttype != 5) && /*!isSuperCard &&*/ !isOmega) || isOmegaDE) {
_RamPG();
ReadSram(SRAM_ADDR, (u8*)&ctrl, sizeof(struct ctrl_tbl));
_RamSave(0);
return;
}
if (isSuperCard) {
/*if (isSuperCard) {
sprintf(expfile, "%s/SUPERCRD.dat", ini.sign_dir);
} else if (isOmega) {
} else */if (isOmega) {
sprintf(expfile, "%s/OMEGA.dat", ini.sign_dir);
} else {
sprintf(expfile, "%s/EXP128K.dat", ini.sign_dir);
@ -60,16 +60,16 @@ void ctrl_set() {
FILE *exp;
char expfile[64];
if (((carttype != 5) && !isSuperCard && !isOmega) || isOmegaDE) {
if (((carttype != 5) && /*!isSuperCard && */!isOmega) || isOmegaDE) {
_RamPG();
WriteSram(SRAM_ADDR, (u8*)&ctrl, sizeof(struct ctrl_tbl));
_RamSave(0);
return;
}
if (isSuperCard) {
/*if (isSuperCard) {
sprintf(expfile, "%s/SUPERCRD.dat", ini.sign_dir);
} else if (isOmega) {
} else */if (isOmega) {
sprintf(expfile, "%s/OMEGA.dat", ini.sign_dir);
} else {
sprintf(expfile, "%s/EXP128K.dat", ini.sign_dir);

45
arm9/source/gbaldr.itcm.cpp
View File

@ -28,6 +28,7 @@
#include "dsCard.h"
#include "sc_patches.h"
#include "sc_sram.h"
#include "io_sc_common.h"
//#include <nds/arm9/console.h> //basic print funcionality
@ -483,7 +484,7 @@ int checkFlashID() {
void _RamPG() {
if (isSuperCard)return;
// if (isSuperCard)return;
switch (carttype) {
case 3:
SetRampage(USE_SRAM_PG_EZ4);
@ -495,7 +496,11 @@ void _RamPG() {
SetEWINRam(USE_SRAM_PG_EWN128);
return;
case 6:
if (isSuperCard) {
_SC_changeMode(SC_MODE_RAM);
} else {
SetM3Ram(USE_SRAM_PG_M3);
}
return;
}
if (isOmega) {
@ -511,13 +516,21 @@ void _RamPG() {
}
void _RamSave(int bnk) {
if (isSuperCard)return;
if (isSuperCard && (bnk > 1))return;
switch (carttype) {
case 3:
SetRampage(USE_SRAM_PSR_EZ4 + bnk * 16);
return;
case 6:
if (isSuperCard) {
if (bnk == 0) {
_SC_changeMode(SC_MODE_RAM_RO);
} else {
_SC_changeMode(SC_MODE_RAM);
}
} else {
SetM3Ram(USE_SRAM_PSR_M3 + bnk);
}
return;
}
@ -590,6 +603,7 @@ int checkSRAM(char *name) {
}
// if (isOmega && (savesize > 0x10000))savesize = 0x10000;
if (isSuperCard && (savesize > 0x10000))savesize = 0x10000;
strcpy(name, (char *)ctrl.sav_nam[GBAmode]);
ln = strlen(name) - 3;
@ -708,8 +722,11 @@ void SRAMdump(int cmd) {
case 4: mx = 4; break;
case 5: mx = 2; break;
case 6:
if (isSuperCard) {
mx = 2;
} else {
mx = 16;
if (isSuperCard)mx = 1;
}
break;
}
@ -719,8 +736,16 @@ void SRAMdump(int cmd) {
dsp_bar(4, -1);
dmp = fopen(name, "wb");
for(i = 0; i < mx; i++) {
if((carttype == 6) && !isSuperCard) {
if (carttype == 6) {
if (isSuperCard) {
if (i == 0) {
_SC_changeMode(SC_MODE_RAM_RO);
} else {
_SC_changeMode(SC_MODE_RAM);
}
} else {
SetM3Ram(i);
}
} else if (!isSuperCard) {
if((carttype >= 4)) {
SetEWINRam(8 + i);
@ -767,8 +792,16 @@ void SRAMdump(int cmd) {
memset(rwbuf, 0, USE_SRAM / 2);
if(dmp != NULL)
fread(rwbuf, 1, USE_SRAM / 2, dmp);
if((carttype == 6) && !isSuperCard) {
if (carttype == 6) {
if (isSuperCard) {
if (i == 0) {
_SC_changeMode(SC_MODE_RAM_RO);
} else {
_SC_changeMode(SC_MODE_RAM);
}
} else {
SetM3Ram(i);
}
} else {
if((carttype >= 4) && !isSuperCard) {
SetEWINRam(8 + i);
@ -1081,6 +1114,8 @@ int writeFileToRam(int sel) {
Set_RTC_status(1);
SetPSRampage(0);
// Omega_InitFatBuffer(OMEGA_UNKNOWN, Omega_SetSaveSize(OMEGA_UNKNOWN), fs[sel].filesize);
} else if (isSuperCard) {
_SC_changeMode(SC_MODE_RAM);
}
// savesize = gba_check(gbaFile, fs[sel].filesize, rwbuf, 0x100000);

2
arm9/source/main.c
View File

@ -49,7 +49,7 @@ extern uint16* SubScreen;
#define BG_256_COLOR (BIT(7))
#define VERSTRING "v0.66"
#define VERSTRING "v0.67"
int numFiles = 0;
int numGames = 0;