mirror of https://github.com/mlaux/gb6.git
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
#ifndef _LCD_H
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#define _LCD_H
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#include "types.h"
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#define LCD_WIDTH 160
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#define LCD_HEIGHT 144
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#define REG_LCD_BASE 0xff40
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#define REG_LCDC 0xff40
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#define REG_STAT 0xff41
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#define REG_SCY 0xff42
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#define REG_SCX 0xff43
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#define REG_LY 0xff44
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#define REG_LYC 0xff45
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#define REG_DMA 0xff46
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#define REG_BGP 0xff47
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#define REG_OBP0 0xff48
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#define REG_OBP1 0xff49
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#define REG_WY 0xff4a
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#define REG_WX 0xff4b
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#define REG_LCD_LAST REG_WX
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#define STAT_FLAG_MATCH (1 << 2)
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#define STAT_INTR_SOURCE_HBLANK (1 << 3)
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#define STAT_INTR_SOURCE_VBLANK (1 << 4)
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#define STAT_INTR_SOURCE_MODE2 (1 << 5)
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#define STAT_INTR_SOURCE_MATCH (1 << 6)
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#define LCDC_ENABLE_BG (1 << 0)
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#define LCDC_ENABLE_OBJ (1 << 1)
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#define LCDC_OBJ_SIZE (1 << 2)
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#define LCDC_BG_TILE_MAP (1 << 3)
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#define LCDC_BG_TILE_DATA (1 << 4)
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#define LCDC_ENABLE_WINDOW (1 << 5)
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#define LCDC_WINDOW_TILE_MAP (1 << 6)
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#define LCDC_ENABLE (1 << 7)
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#define OAM_ATTR_PALETTE (1 << 4)
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#define OAM_ATTR_MIRROR_X (1 << 5)
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#define OAM_ATTR_MIRROR_Y (1 << 6)
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#define OAM_ATTR_BEHIND_BG (1 << 7)
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struct lcd {
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u8 oam[0xa0];
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u8 regs[0x0c];
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u8 *buf; // 256x256
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u8 *window;
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u8 *pixels; // the actual 160x144 visible area
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};
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void lcd_new(struct lcd *lcd);
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u8 lcd_is_valid_addr(u16 addr);
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u8 lcd_read(struct lcd *lcd, u16 addr);
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void lcd_write(struct lcd *lcd, u16 addr, u8 value);
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void lcd_put_pixel(struct lcd *lcd, u8 x, u8 y, u8 value);
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void lcd_set_bit(struct lcd *lcd, u16 addr, u8 bit);
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void lcd_clear_bit(struct lcd *lcd, u16 addr, u8 bit);
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int lcd_isset(struct lcd *lcd, u16 addr, u8 bit);
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void lcd_set_mode(struct lcd *lcd, int mode);
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int lcd_step(struct lcd *lcd);
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void lcd_apply_scroll(struct lcd *lcd, int use_window);
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// output the pixels to the screen
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void lcd_draw(struct lcd *lcd);
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#endif |