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system_tools:rtg [2020/08/02 12:37]
127.0.0.1 external edit
system_tools:rtg [2021/01/01 10:22] (current)
renaudschweingruber_txg59n64 [Overview]
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 ===== Overview ===== ===== Overview =====
  
-''Jason Mac Mullan'' kindly develops and maintains the ''SAGA RTG driver'' to be used with the ''Digital Video Out'' of the ''Vampire'' boards. The driver is still in a beta stage.+Apollo Team develops and maintains the ''SAGA RTG driver'' to be used with the ''Digital Video Out'' of the ''Vampire'' boards  with Picasso96 installed on AmigaOS3For AROS, there is no need for that driver.
  
 ---- ----
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 ===== 2) Configure the SAGA monitor ===== ===== 2) Configure the SAGA monitor =====
 +
 +You can turn on/off scanlines for RTG screen modes using a tooltype in the ''DEVS:Monitors/vampiregfx.info'' file.
 +
 +**ToolType syntax:**
 +
 +  Scanlines=xxx
 +  ; where xxx can be Yes or No.
 +
 +----
  
 The ''SAGA Core'' uses the FastRAM of the Vampire board to display the video on the screen. The driver allows you to configure how much of the FastRAM will be reserved for the Video FrameBuffer. The default is 8MB. This means, after driver initialization, your available FastRAM is ( 128MB - 8MB ) = 120MB. You can configure this behavior by adding a tooltype to the ''DEVS:Monitors/vampiregfx.info'' file. This feature allows you to save unused memory by configuring the video memory size that fits your needs. Let's say someone will never use a screen larger than 960x540x24bits, then that person will need only 1.5MB. The ''SAGA Core'' uses the FastRAM of the Vampire board to display the video on the screen. The driver allows you to configure how much of the FastRAM will be reserved for the Video FrameBuffer. The default is 8MB. This means, after driver initialization, your available FastRAM is ( 128MB - 8MB ) = 120MB. You can configure this behavior by adding a tooltype to the ''DEVS:Monitors/vampiregfx.info'' file. This feature allows you to save unused memory by configuring the video memory size that fits your needs. Let's say someone will never use a screen larger than 960x540x24bits, then that person will need only 1.5MB.
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   * You can test RTG screen modes from the ''ScreenMode Preferences'' of AmigaOS.   * You can test RTG screen modes from the ''ScreenMode Preferences'' of AmigaOS.
-  * You should use resolutions and refresh rates that work best with your monitor or TV.+  * You should use resolutions and refresh rates that work best with your monitor or TV.  If you find a screen mode that does not work, then you can set it to ''inactive'' in the ''SYS:Prefs/Picasso96Mode'' tool, so that it does not get accidentally selected. 
 +    * Some monitors and TVs have trouble displaying resolutions that are lower than 640×480, which is the minimum allowed value for Digital Video. 
 +    * If the horizontal resolution is less than or equal to 500, then the RTG driver will pixel-double the resolution horizontally. If the vertical resolution is less than or equal to 300, then the RTG driver will pixel-double the resolution vertically. This will help most low RTG resolutions to reach the minimum allowed Digital Video resolution (640×480), with the notable exception of 320×200, which will only reach 640×400.
   * We recommend using 1280x720 or 960x540 for the best AmigaOS experience.   * We recommend using 1280x720 or 960x540 for the best AmigaOS experience.
   * If you have a Vampire Standalone, make sure you test 720x576@50Hz and 720x480@60Hz, to ensure that your monitor or TV works well with them. The Vampire Standalone outputs non-RTG screen modes to Digital Video in these two resolutions. (The former in PAL mode and the latter in NTSC mode.)   * If you have a Vampire Standalone, make sure you test 720x576@50Hz and 720x480@60Hz, to ensure that your monitor or TV works well with them. The Vampire Standalone outputs non-RTG screen modes to Digital Video in these two resolutions. (The former in PAL mode and the latter in NTSC mode.)
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         * Many monitors and TVs are flexible and support clock rates that are even lower than this minimum value.         * Many monitors and TVs are flexible and support clock rates that are even lower than this minimum value.
       * The clock rate must be at most 65MHz, which is the maximum allowed value on Vampire boards.       * The clock rate must be at most 65MHz, which is the maximum allowed value on Vampire boards.
 +      * The resolution should be at least 640x480, which is the minimum allowed value for Digital Video.
 +        * Many monitors and TVs are flexible and support resolutions that are even lower than this minimum value.
 +        * See "Test desired screen modes" above to understand how pixel-doubling helps low resolutions reach this minimum value.
       * The resolution, the horizontal frequency and the vertical frequency (refresh rate) should be within the specifications of your monitor or TV.       * The resolution, the horizontal frequency and the vertical frequency (refresh rate) should be within the specifications of your monitor or TV.
         * Usually, the monitor or TV supports a specific subset of standard refresh rates, like 24/25/30/50/60Hz.         * Usually, the monitor or TV supports a specific subset of standard refresh rates, like 24/25/30/50/60Hz.
Last modified: le 2020/08/02 12:37