Aart's Blog

Remember this screen? Yes, that's right. I too became interested in computer science because of the Commodore 64. Although I still have my Commodore 64 somewhere, nowadays it is much easier to relive the good old times with an emulator, such as CCS64 (Per Håkan Sundell), VICE (the VICE team), or MP64 (an emulator under development by Michael Plet). A while back I wrote a 6510 cross-assembler win2c64 that converts an assembler source file into a target file that can run on one of these emulators or, with some work, on the real Commodore 64 (an assembler converts human readable mnemonics, labels, and simple expressions into machine code; win2c64 is a cross -assembler because it runs on a Windows platform but generates machine code for the Commodore 64). If you are interested, you can find the cross-assembler and some sample programs at Aart's C64 page .

Now that I am enthusiastic about textures, I also added a board texture to the other games. For Reversi for Android this hopefully also addresses complaints that the board was "too green". For Checkers for Android, I simply reused the coffee table texture, as shown below.

A user "dragonfish" suggested to add texture to the wooden chess board in Chess for Android. So I took a picture of my coffee table and used that as texture for the dark squares. See the result below. Together with a minor engine improvement, this new feature has been released in v2.2.

I am now working for Topeka .

Version 1.2.9 of Chess for Android will enable users to export a game to another application, such as an editor, email, or another chess program: copy all moves to the clipboard as PGN (Portable Game Notation) copy the position to the clipboard as FEN (Forsyth–Edwards Notation) To use these options, long-press anywhere in the move list area. Then, the following menu appears. Select one, then exit the chess application and go to the application where you want to paste the game. For example, I picked Copy Moves as PGN and went to messaging and long-pressed the text area. Then Paste the contents of the clipboard into the message, and the game appears in PGN format (note that, for convenience, I use a slightly more elaborate algebraic chess notation than strictly required; readers should still accept that format though). Likewise, using Copy Position as FEN , the contents would look as follows.