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digic8:registers

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digic8:registers [2022/02/20 16:35] – [LV peaking (Highlights / zebra)] kitordigic8:registers [2022/02/20 17:04] – [LV peaking (Highlights / zebra)] kitor
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 Directly poking HDMI enable doesn't work. There's something running in DryOS that constantly overwrites this register with value saved in runtime. Directly poking HDMI enable doesn't work. There's something running in DryOS that constantly overwrites this register with value saved in runtime.
  
-On R180.739 I was able to follow xrefs to that register, and found a function that writes them - on R180.739 source value is stored in `b054`. If you apply the rules but write value to `b054` instead of register - it will get updated and zebras displayed on HDMI.+On R180.739 I was able to follow xrefs to that register, and found a function that writes them - on R180.739 source value is stored in ''b054''. If you apply the rules but write value to ''b054'' instead of register - it will get updated and zebras displayed on HDMI.
  
 __It is possible to have independent zebras configured on LCD and HDMI while running in Clean HDMI mode!__ __It is possible to have independent zebras configured on LCD and HDMI while running in Clean HDMI mode!__
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 Value written should be masked ''0x100'' with one read from ''reg + 0x2000'' Value written should be masked ''0x100'' with one read from ''reg + 0x2000''
 +
 +This register lies in **Display registers** range and most likely has more meanings.
  
 ===Threshold / style register=== ===Threshold / style register===
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 Value written should be masked ''0xB137FFFF'' with one read from ''reg + 0x2000'' Value written should be masked ''0xB137FFFF'' with one read from ''reg + 0x2000''
  
-^ Field      ^ Range ^ Description ^+^ Field        ^ Range ^ Description ^
 | visibility   | 0,1   | zebra visibility (do not confuse with Enable register)  | | visibility   | 0,1   | zebra visibility (do not confuse with Enable register)  |
 | speed        | 0-3   | lines/dots are moving slower -> faster                  | | speed        | 0-3   | lines/dots are moving slower -> faster                  |
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 | underexpo_th | 0-255 | Threshold on undexexpo register, ignored on overexpo    |  | underexpo_th | 0-255 | Threshold on undexexpo register, ignored on overexpo    | 
 | overexpo_th  | 0-255 | Threshold on overexpo register, ignored on underexpo    | | overexpo_th  | 0-255 | Threshold on overexpo register, ignored on underexpo    |
 +
 +**Note: On HDMI max threshold is 0xE8** Values above that are not displayed!
  
 ===Color register=== ===Color register===
digic8/registers.txt · Last modified: 2022/02/21 23:03 by kitor