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39 bytes added ,  15:51, 7 May 2020
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|-
 
| 0x00
 
| 0x00
| Pixel clock
+
| H-total (V-total on not physically rotated screens).
| Higher values are slower, 12bits.
+
| 12bits.
    
Setting this value too low will make the screen not be able to sync any pixels other than a single one from the wrong location. The lowest the screen can handle is 0x1C2, at 0x1C1 the display loses a few scanlines worth of pixel clock (though not noticable).
 
Setting this value too low will make the screen not be able to sync any pixels other than a single one from the wrong location. The lowest the screen can handle is 0x1C2, at 0x1C1 the display loses a few scanlines worth of pixel clock (though not noticable).
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|-
 
|-
 
| 0x24
 
| 0x24
| Low: ???
+
| V-total (H-total on not physically rotated screens).
High: ???
   
| The low 12bit halfword seems to affect:
 
| The low 12bit halfword seems to affect:
   −
- the total amount of scanlines displayed
+
Total scanlines including porches/sync timing. Setting this to 494 lowers framerate to about 50.040660858 Hz.
 
  −
- vertical pixel data offset if the GPU can't VSync properly
  −
 
  −
- VSync length
   
|-
 
|-
 
| 0x28
 
| 0x28
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