PSP: Update README.PSP.in with the latest changes to README.PSP.

svn-id: r54384

backends/platform/psp/README.PSP.in

@@ -6,6 +6,7 @@ Installation
  - Copy the relevant game datafiles to your memory stick (location doesn't matter).
  - Install ScummVM like any other homebrew.
  - Run ScummVM and use the launcher to add games and run them.
+ - Press Start to return to the launcher and play another game.
 
 Controls
 ========
@@ -20,9 +21,10 @@ Cross					- Left Mouse Button (usually the main button)
 Circle					- Right Mouse Button (secondary button in some games)
 Square					- '.' (skip dialogue in some games e.g. Scumm)
 Right trigger + Square	- Spacebar (useful in Gobli*ns and SCI games)
-Start					- Global Menu. Allows you to 'Return To Launcher' to play another game
 Right trigger + Start	- F5 (Main Menu in some games)
 Select					- Show/Hide Virtual Keyboard. Hold down to move keyboard onscreen (with D-Pad).
+Right trigger + Select  - Show Image Viewer (see below)
+Start					- Global Menu. Allows you to 'Return To Launcher' to play another game
 
 Virtual Keyboard Mode
 =====================
@@ -37,6 +39,34 @@ Buttons/Triggers		- Choose a specific character in the square. The four center c
 Analog					- Moves in a direction (left/right/up/down) (Useful to keep moving
 						  while typing in AGI games among other things)
 
+
+Image Viewer
+============
+For your convenience, I've included a simple image viewer in the PSP port. 
+You can view anything you want while playing a game.
+There are a few simple rules to follow:
+
+- Images must be of PNG format. If you have images in another format, many 
+  graphics utilities will convert them for you.
+- Images must be named psp_image1.png, psp_image2.png etc. This is to make 
+  sure there's no possible conflict between image files and game files.
+- Images must be placed in the game directories. When using the image viewer,
+  only the images of the particular game being played will be available for viewing.
+- Don't place any images in the ScummVM directory, or you won't be able to see
+  the images in the game directories.
+- There's no guarantee that you'll be able to view your image. This is because
+  big images take a lot of memory (more than the size of the image on disk). If there
+  isn't enough memory left to show the image, ScummVM will tell you so. Try to make the
+  image smaller by either shrinking it or reducing the colors to 256 color palette mode.
+
+Image Viewer Controls:
+=====================
+Left/Right				- previous/next image (e.g. go from psp_image1.png to psp_image2.png)
+Up/down					- zoom in/out
+Analog					- move around the image
+Triggers, Start: 		- exit image viewer
+
+						  
 1st Person Game Mode (Can be ignored by most users)
 ====================
 This is a special mode built for 1st person games like Lands of Lore. If you don't have these games you can
@@ -49,9 +79,12 @@ Square					- Is the modifier key instead of Right Trigger.
 Left/Right Trigger		- Strafe left/right
 D-Pad Left/Right		- Turn left/right
 Square + D-Pad			- F1/F2/F3/F4
+Square + Select			- Image Viewer
 Square + Start			- Esc (shows game menu)
 
 
+
+						  
 Notes
 =====
 - Notice that you can switch between games! This is much faster than quitting