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x68000:video_ram_basics [2017/08/14 15:27]
neko68k
x68000:video_ram_basics [2017/08/16 16:17] (current)
neko68k
Line 28: Line 28:
  
  ADR = $c00000+Y×1024+X×2  ADR = $c00000+Y×1024+X×2
- BIT = P×8 ~ P×8+7 ​of 8 bits+ BIT = P×8 ~ P×8+7 ​for 8 bits
  
 **Real screen 512×512 pixels、16 colors** **Real screen 512×512 pixels、16 colors**
Line 39: Line 39:
  
  ADR = $c00000+Y×1024+X×2  ADR = $c00000+Y×1024+X×2
- BIT = P×4 ~ P×4+3 ​of 4 bits+ BIT = P×4 ~ P×4+3 ​for 4 bits
  
 **Real screen 1024×1024 pixels、16 colors:** **Real screen 1024×1024 pixels、16 colors:**
Line 48: Line 48:
  ADR = $c00000+(Y&511)×1024+(X&511)×2  ADR = $c00000+(Y&511)×1024+(X&511)×2
  BIT = (Y≧512)×8+(X≧512)×4 ~  BIT = (Y≧512)×8+(X≧512)×4 ~
-       (Y≧512)×8+(X≧512)×4+3 ​of 4 bits   ​+       (Y≧512)×8+(X≧512)×4+3 ​for 4 bits   ​
  
 ===== Text VRAM ===== ===== Text VRAM =====
 
 x68000/video_ram_basics.txt · Last modified: 2017/08/16 16:17 by neko68k
 
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