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- RAM_PIC = 0x0000 # Screen Picture, 64 x 64 = 4096 bytes
- RAM_CHR = 0x1000 # Screen Characters, 256 x 16 = 4096 bytes
- RAM_PAL = 0x2000 # Screen Character Palette, 256 x 8 = 2048 bytes
- IDENT = 0x2800
- REV = 0x2801
- FRAME = 0x2802
- VBLANK = 0x2803
- SCROLL_X = 0x2804
- SCROLL_Y = 0x2806
- JK_MODE = 0x2808
- J1_RESET = 0x2809
- SPR_DISABLE = 0x280a
- SPR_PAGE = 0x280b
- IOMODE = 0x280c
- BG_COLOR = 0x280e
- SAMPLE_L = 0x2810
- SAMPLE_R = 0x2812
- SCREENSHOT_Y = 0x281e
- PALETTE16A = 0x2840 # 16-color palette RAM A, 32 bytes
- PALETTE16B = 0x2860 # 16-color palette RAM B, 32 bytes
- PALETTE4A = 0x2880 # 4-color palette RAM A, 8 bytes
- PALETTE4B = 0x2888 # 4-color palette RAM A, 8 bytes
- COMM = 0x2890 # Communication buffer
- COLLISION = 0x2900 # Collision detection RAM, 256 bytes
- VOICES = 0x2a00 # Voice controls
- J1_CODE = 0x2b00 # J1 coprocessor microcode RAM
- SCREENSHOT = 0x2c00 # screenshot line RAM
- RAM_SPR = 0x3000 # Sprite Control, 512 x 4 = 2048 bytes
- RAM_SPRPAL = 0x3800 # Sprite Palettes, 4 x 256 = 2048 bytes
- RAM_SPRIMG = 0x4000 # Sprite Image, 64 x 256 = 16384 bytes
- def RGB(r, g, b):
- """ Return the 16-bit hardware encoding of color (R,G,B).
- :param R: red value 0-255
- :param G: green value 0-255
- :param B: blue value 0-255
- :rtype: int
- """
- return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3)
- TRANSPARENT = (1 << 15)
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