98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
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//
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// GBA Memory map
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//
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//! \file tonc_memmap.h
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//! \author J Vijn
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//! \date 20060508 - 20060508
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//
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// === NOTES ===
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// * This is a _small_ set of typedefs, #defines and inlines that can
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// be found in tonclib, and might not represent the
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// final forms.
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#ifndef __MEMMAP__
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#define __MEMMAP__
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// === MEMORY SECTIONS ================================================
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// basic sections
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#define MEM_IO 0x04000000
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#define MEM_PAL 0x05000000 // no 8bit write !!
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#define MEM_VRAM 0x06000000 // no 8bit write !!
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#define MEM_OAM 0x07000000 // no 8bit write !!
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// basic sizes
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#define PAL_SIZE 0x00400
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#define VRAM_SIZE 0x18000
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#define OAM_SIZE 0x00400
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// sub sizes
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#define PAL_BG_SIZE 0x00200
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#define PAL_OBJ_SIZE 0x00200
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#define VRAM_BG_SIZE 0x10000
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#define VRAM_OBJ_SIZE 0x08000
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#define M3_SIZE 0x12C00
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#define M4_SIZE 0x09600
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#define M5_SIZE 0x0A000
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#define VRAM_PAGE_SIZE 0x0A000
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// sub sections
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#define REG_BASE MEM_IO
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#define MEM_PAL_OBJ (MEM_PAL + PAL_BG_SIZE)
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#define MEM_VRAM_BACK (MEM_VRAM+ VRAM_PAGE_SIZE)
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#define MEM_VRAM_OBJ (MEM_VRAM+ VRAM_BG_SIZE)
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// === STRUCTURED MEMORY MAP ==========================================
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// Heavily typedefed, watch your pointers
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// Should simplify memory accesses
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// --- PAL ---
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// pal_bg_mem[y] = COLOR (color y)
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#define pal_bg_mem ((COLOR*)MEM_PAL)
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#define pal_obj_mem ((COLOR*)MEM_PAL_OBJ)
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// pal_bg_bank[y] = COLOR[] (bank y)
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// pal_bg_bank[y][x] = COLOR (bank y, color x : color y*16+x)
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#define pal_bg_bank ((PALBANK*)MEM_PAL)
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#define pal_obj_bank ((PALBANK*)MEM_PAL_OBJ)
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// --- VRAM ---
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// tile_mem[y] = TILE[] (char block y)
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// tile_mem[y][x] = TILE (char block y, tile x)
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#define tile_mem ( (CHARBLOCK*)MEM_VRAM)
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#define tile8_mem ((CHARBLOCK8*)MEM_VRAM)
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#define tile_mem_obj ( (CHARBLOCK*)MEM_VRAM_OBJ)
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#define tile8_mem_obj ((CHARBLOCK8*)MEM_VRAM_OBJ)
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// vid_mem[a] = COLOR
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#define vid_mem ((COLOR*)MEM_VRAM)
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// --- OAM ---
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// oatr_mem[a] = OBJ_ATTR (oam entry a)
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#define oam_mem ((OBJ_ATTR*)MEM_OAM)
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#define obj_mem ((OBJ_ATTR*)MEM_OAM)
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#define obj_aff_mem ((OBJ_AFFINE*)MEM_OAM)
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// === REGISTER LIST ==================================================
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// === VIDEO REGISTERS ===
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#define REG_DISPCNT *(vu32*)(REG_BASE+0x0000) // display control
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#define REG_DISPSTAT *(vu16*)(REG_BASE+0x0004) // display interupt status
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#define REG_VCOUNT *(vu16*)(REG_BASE+0x0006) // vertical count
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// === KEYPAD ===
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#define REG_KEYINPUT *(vu16*)(REG_BASE+0x0130) // Key status
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#define REG_KEYCNT *(vu16*)(REG_BASE+0x0132)
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#endif // __MEMMAP__
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