1 files changed, 25 insertions, 4 deletions

diff --git a/src/core/src/mem_map.h b/src/core/src/mem_map.h
index 8ef6e58a2..3251fc416 100644
--- a/src/core/src/mem_map.h
+++ b/src/core/src/mem_map.h
@@ -32,13 +32,34 @@
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
+#define MEM_BOOTROM_SIZE		0x00010000	///< Bootrom (super secret code/data @ 0x8000) size
+#define MEM_MPCORE_PRIV_SIZE	0x00002000	///< MPCore private memory region size
+#define MEM_VRAM_SIZE			0x00600000	///< VRAM size
+#define MEM_DSP_SIZE			0x00080000	///< DSP memory size
+#define MEM_AXI_WRAM_SIZE		0x00080000	///< AXI WRAM size
+#define MEM_FCRAM_SIZE			0x08000000	///< FCRAM size
+
+#define MEMORY_SIZE				MEM_FCRAM_SIZE
+#define MEMORY_MASK				(MEM_FCRAM_SIZE - 1)	///< Main memory mask
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
 namespace Memory {
 
-extern u8* g_ram;
-extern u8* g_vram;
+// Base is a pointer to the base of the memory map. Yes, some MMU tricks
+// are used to set up a full GC or Wii memory map in process memory.  on
+// 32-bit, you have to mask your offsets with 0x3FFFFFFF. This means that
+// some things are mirrored too many times, but eh... it works.
+
+// In 64-bit, this might point to "high memory" (above the 32-bit limit),
+// so be sure to load it into a 64-bit register.
+extern u8 *g_base; 
 
-extern u32 g_memory_size;
-extern u32 g_memory_mask;
+// These are guaranteed to point to "low memory" addresses (sub-32-bit).
+// 64-bit: Pointers to low-mem (sub-0x10000000) mirror
+// 32-bit: Same as the corresponding physical/virtual pointers.
+extern u8* g_ram;			///< Main memory
+extern u8* g_vram;			///< Video memory (VRAM)
 
 void Init();
 void Shutdown();