display brightness

The SLIMP3's VFD had four brightness steps, plus off. The Rio Receiver has a backlight which is either on or off. So I've used the Brightness setting to select a couple of display variations:
  • normal display
  • line-swapped display, for double-height mode (see text size note below)
  • inverted (white text on black background)
  • backlight off
  • display off
These can be selected separately for playing, stopped and off states on the SqueezeCenter web interface (Player settings - Display - Brightness).

display text size

On the SqueezeCenter web interface, it is possible to change the display's text size (Player settings - Display - Text size). It's normally small, which uses the native character set of the VFD. Choosing large causes SqueezeCenter to try rendering a rather scrappy double-size text made up of bits of line-drawing characters. Because SLIMP3's two-line display is twice as wide and half as tall as the Rio Receiver's, slimrio has to split each line in two; this renders double-height text completely illegible. The second Brightness setting (see above) changes the order of lines on the display so the double-height mode comes out unscrambled (though I'd still hesitate to call it "legible"!).