
    Welcome to GP2X-ZX81 - 1.0.1

Original Author of XZ81

  Russell Marks (russell.marks@ntlworld.com)

Author of the PSP and GP2X ports version

  Ludovic.Jacomme also known as Zx-81 (zx81.zx81@gmail.com)


1. INTRODUCTION
   ------------

  XZ81 is one of the best emulator of the Sinclair ZX81 computer
  running on Unix systems. 
  See http://rus.members.beeb.net/ for further informations.

  GP2X-ZX81 is a port on GP2X of the Unix version 2.1 of xz81.

  Thanks to Danzel and Jeff Chen for their virtual keyboard,
  and to all GP2X-SDK developpers.

  This package is under GPL Copyright, read COPYING file for
  more information about it.


2. INSTALLATION
   ------------

  Unzip the zip file, and copy the content of the directory game to your
  SD memory.

  Put your program image files on "prg" sub-directory.

  For any comments or questions on this version, please visit 
  http://zx81.zx81.free.fr or http://www.gp32x.com/

3. CONTROL
   ------------

  In the ZX81 emulator window

    PSP        ZX81 
  
    Up         Up
    Down       Down
    Left       Left
    Right      Right
    Y          NewLine
    B          Y
    X          N
    A          Rubout/Delete
    LTrigger   Graphics
    RTrigger   Space

    Pad        A,B,C,D
  
    Press Select to enter in emulator main menu.
    Press Start  open/close the On-Screen keyboard

  In the main menu

    R Trigger  Reset the ZX81

    Y   Go Up directory
    X   Valid
    B   Valid
    A   Go Back to the emulator window

  The On-Screen Keyboard of "Danzel" and "Jeff Chen"

    Use the stick to choose one of the 9 squares, and
    use A, B, X, Y to choose one of the 4 letters 
    of the highlighted square.

    Use LTrigger and RTrigger to see other 9 squares 
    figures.


4. LOADING ZX81 PROGRAM FILES
   ------------

  If you want to load program files in your emulator, you have to put your file
  (with .zip, or .p file extension) on your SD memory in the 'prg' 
  directory.

  Then, while inside GP2XZX81 emulator, just press SELECT to enter in 
  the emulator main menu, and then using the file selector choose one 
  program file to load in your emulator.

  Back to the emulator window, the program should stard automatically.

5. LOADING KEY MAPPING FILES
   ------------

  For given games, the default keyboard mapping between GP2X Keys and
  ZX81 keys, is not suitable, and the game can't be played on GP2XZX81.

  To overcome the issue, you can write your own mapping file. Using notepad for
  example you can edit a file with the .kbd extension and put it in the kbd 
  directory.

  For the exact syntax of those mapping files, have a look on sample files
  already presents in the kbd directory (default.kbd etc ...).

  After writting such keyboard mapping file, you can load them using the main
  menu inside the emulator.

  If the keyboard filename is the same as the program filename (.zip etc ...)
  then when you load this program, the corresponding keyboard file is
  automatically loaded !

  You can now use the Keyboard menu and edit, load and save your
  keyboard mapping files inside the emulator. The Save option save the .kbd
  file in the kbd directory using the "Game Name" as filename. The game name
  is displayed on the right corner in the emulator menu.

6. COMPILATION
   ------------

  It has been developped under Linux using gcc with GP2XSDK. 
  To rebuild the homebrew run the Makefile in the src archive.
