Welcome to the WUDSN ursel home page

WUDSN ursel - or short WUDSN - is a demo group founded in 1991. There is an explanation why the group and the site are named like that, but that's a different story you can find in the FAQ. For the time being it should be sufficient for you to know that me, aka JAC! am one of the members ever since. I have created this web site to offer my tools and productions and to share the fun I have had for more than 20 years now with my Atari-8 bit computer and other classic computers.

Site Update

FAQ Updates:

  • New question "Why are the errors and warnings from an include file assigned to the main source file in the problems view?" added.
  • Question "How do I compile into disk images?" extended with description and binaries for MacOS X users. The binaries have been provided by Fredrick Holst (freetz) and you can find the latest versions on his web site.

WUDSN IDE update 1.6.6 released

A new version of the IDE is available via the update site and as zero installation download. When I started recording the 7th part for the Programming the Atari XL/XE video tutorial I found that the graphics editor and hex editor are not as usable as they should be. So I decided to implement some improvements and fixes first. At the same time quite a number of Mac OS X users reported issues with installing Java 1.7 on their machines, making it difficult for them to use WUDSN IDE. Hence I invested quite some time in reworking the code, so it runs properly also with "good old" Java 1.6. 

General:

  • This version can run with Java 1.6 (JRE/JDK), so also a vanilla OS X Snow Leopard (10.6), Lion (10.7), Mountain Lion (10.8) and  Mavericks (10.9) can run it out of the box.
  • Improved handling of relative file paths in source and binary includes.
  • Zero installation download now uses Eclipse 4.3.2. You can of course keep on using Eclipse 4.3.1 in case you already have it installed.

Graphics Editor:

  • All buttons now have icons with tooltips.
  • Enabling of input fields and change detection is consistent now.
  • Typing into any file path of text field updates the dirty indicator immediately, so you see if there are unsaved changes.
  • Toggling the "Shrink" and "Zoom" buttons updates image size correctly now.
  • Line numbers have been added in the script editor.
  • The line with the cursor is highlighted in the script editor.
  • New default converter scripts for converting character sets have been added.
  • Error messages in case of script errors have been improved and the cursor is positioned to the error location in the source.

Hex Editor:

  • Performance when opening a file with the Hex Editor improved by a factor of 10 to 20. Now a file with 1 MB is opened in far less than 1 second.
  • Allowed maximum file size has been increased to 8 MB.
  • ATR files with 256 bytes boot sectors are now handled correctly because they are rather common even though they violate the ATR specification
  • ATR files created from single Atari COM files, so called "k-files", are now detected automatically. For them not only the sectors of the ATR are displayed, but also the segments of the contained Atari COM file are displayed in the outline and the editor.
  • C64-PRG files are now detected automatically.