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Properly allocate memory for RAM drive 1

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This commit is contained in:
RocketRobz 2021-10-09 19:58:14 -06:00
parent 7750ab47c0
commit b9fcd7fa54
3 changed files with 10 additions and 3 deletions
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3
arm9/source/driveOperations.cpp
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@ -339,7 +339,8 @@ void flashcardUnmount(void) {
} }
TWL_CODE void ramdrive1Mount(void) { TWL_CODE void ramdrive1Mount(void) {
LZ77_Decompress((u8*)__9MB_lz77, (u8*)0x02500000); ramdLoc = new u8[0x900200];
LZ77_Decompress((u8*)__9MB_lz77, ramdLoc);
fatMountSimple("ram1", &io_ram_drive); fatMountSimple("ram1", &io_ram_drive);
ramdrive1Mounted = (access("ram1:/", F_OK) == 0); ramdrive1Mounted = (access("ram1:/", F_OK) == 0);
} }

7
arm9/source/ramd.c
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@ -1,10 +1,13 @@
#include <nds.h> #include <nds.h>
#include <nds/ndstypes.h>
#include <nds/disc_io.h> #include <nds/disc_io.h>
#include "tonccpy.h" #include "tonccpy.h"
#define SECTOR_SIZE 512 #define SECTOR_SIZE 512
u8* ramdLoc = (u8*)NULL;
bool ramd_startup() { bool ramd_startup() {
return true; return true;
} }
@ -14,12 +17,12 @@ bool ramd_is_inserted() {
} }
bool ramd_read_sectors(sec_t sector, sec_t numSectors, void *buffer) { bool ramd_read_sectors(sec_t sector, sec_t numSectors, void *buffer) {
tonccpy(buffer, (void*)0x02500000+(sector << 9), numSectors << 9); tonccpy(buffer, ramdLoc+(sector << 9), numSectors << 9);
return true; return true;
} }
bool ramd_write_sectors(sec_t sector, sec_t numSectors, const void *buffer) { bool ramd_write_sectors(sec_t sector, sec_t numSectors, const void *buffer) {
tonccpy((void*)0x02500000+(sector << 9), buffer, numSectors << 9); tonccpy(ramdLoc+(sector << 9), buffer, numSectors << 9);
return true; return true;
} }

3
arm9/source/ramd.h
View File

@ -1,7 +1,10 @@
#pragma once #pragma once
#include <nds.h> #include <nds.h>
#include <nds/ndstypes.h>
#include <nds/disc_io.h> #include <nds/disc_io.h>
extern u8* ramdLoc;
extern const DISC_INTERFACE io_ram_drive; extern const DISC_INTERFACE io_ram_drive;
extern const DISC_INTERFACE io_ram_drive2; extern const DISC_INTERFACE io_ram_drive2;