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==LCD screen== | ==LCD screen== | ||
This is a 720p, 8-bits-per-channel LCD with a resistive touch-sensitive layer suitable for use with fingers as well as a high-precision passive stylus. Multi-touch detection is also possible to a limited degree. | This is a 720p, 8-bits-per-channel LCD with a resistive touch-sensitive layer suitable for use with fingers as well as a high-precision passive stylus. Multi-touch detection is also possible to a limited degree. | ||
The market for small LCDs is largely driven by smartphones, making it prohibitively difficult to source a native landscape display. As a result, the Pyra uses a portrait display, with a dedicated video rotation chip interfacing with the CPU/GPU | The market for small LCDs is largely driven by smartphones, making it prohibitively difficult to source a native landscape display. As a result, the Pyra uses a portrait display, <strike>with a dedicated video rotation chip</strike> interfacing with the CPU/GPU | ||
==Rotator== | ==<strike>Rotator</strike> (Not Used)== | ||
MIPI signal rotator by [http://www.solomon-systech.com/en/ Solomon Systech] | MIPI signal rotator by [http://www.solomon-systech.com/en/ Solomon Systech] | ||
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Sample images for comparison available here: | Sample images for comparison available here: | ||
[[https://pyra-handheld.com/boards/threads/beautiful-landscapes-are-prettier-than-portraits.74058/page-11#post-1296877]] | [[https://pyra-handheld.com/boards/threads/beautiful-landscapes-are-prettier-than-portraits.74058/page-11#post-1296877]] | ||
==TILER== | |||
The tiling and isometric lightweight engine for rotation (TILER) resides in the Memory Subsystem of the OMAP5 and Manages the virtual address, data, and byte-enable to match the requested 0-, 90-, 180-, or 270-degree orientation in a tiled 2D addressing space. Previously there was only an slow (because of Bugs) Driver Available, thus the decision above. Later an Community Member ([[Zmatt]]) wrote an new Driver, which performed perfectly. | |||
==Video Output== | ==Video Output== | ||
Revision as of 18:34, 14 April 2017
LCD screen
This is a 720p, 8-bits-per-channel LCD with a resistive touch-sensitive layer suitable for use with fingers as well as a high-precision passive stylus. Multi-touch detection is also possible to a limited degree.
The market for small LCDs is largely driven by smartphones, making it prohibitively difficult to source a native landscape display. As a result, the Pyra uses a portrait display, with a dedicated video rotation chip interfacing with the CPU/GPU
Rotator (Not Used)
MIPI signal rotator by Solomon Systech
This is allows software to have direct access to the display in its physical orientation (landscape) instead of its native logical orientation (portrait). Although not strictly necessary, this makes porting games easier and quicker, as well as reducing GPU load. The rotator chip uses image compression internally due to memory constraints. This is lossy, but of sufficiently high quality as to be generally imperceptible. Sample images for comparison available here: [[1]]
TILER
The tiling and isometric lightweight engine for rotation (TILER) resides in the Memory Subsystem of the OMAP5 and Manages the virtual address, data, and byte-enable to match the requested 0-, 90-, 180-, or 270-degree orientation in a tiled 2D addressing space. Previously there was only an slow (because of Bugs) Driver Available, thus the decision above. Later an Community Member (Zmatt) wrote an new Driver, which performed perfectly.
Video Output
The Pyra has an digital video output supporting HDMI 1.4a, HDCP 1.4, and DVI 1.0 which can be used independently of and at higher resolutions than the built-in LCD. (Confirmation Needed)
It uses a 19-pin Type-D micro connector.
See also: GPU