The Lyra has a 96 x 48 pixel (16 x 6 character) backlit LCD display. Upon startup, the Lyra displays the RCA logo, and then the bitmap contained in the "\PMP\SCREEN.BIT" file. Usually, this file is the splash screen for the Real Jukebox software, and is updated with each download to the player using the Real Jukebox software. Another splash screen is contained on the CompactFlash card, with the filename of "\PMP\SCREEN.BMT", and consists of the word "Lyra" handwritten, with a happy face to the right of it. This bitmap can be displayed by renaming the "screen.bit" file to something else (so as not to copy over it), then renaming the "screen.bmt" file to "screen.bit". The Lyra should display the new bitmap on startup. This can be reversed by restoring the files to their original filenames.
The bitmap is stored in a headerless format. The Lyra bitmap format has an unusual layout (shown below, fig 1), presumably because the display is optimized for (6 x 8 pixel) character display. Each bit in the file represents one pixel on the bitmap, for a total of 576 bytes ( 96 (pixels) X 48 (pixels) = 4608 (total pixels or bits) / 8 (bits per byte) = 576 bytes).
Above is a sample BMT file to upload to the Lyra
All source code and executables on this site are covered by the GPL unelss otherwise indicated.
Source and website (c) 2000-2005 Sean R. Wells
All trademarks are property of their respective owners
