Doors CS 7.0 is due for release by September 1st, 2010, so a month in advance, here is the Software Developers' Kit or SDK. Besides an exhaustive, 124-page summary of all the features and routines that Doors CS 7 offers to BASIC and ASM programmers, this SDK contains a full toolchain to compile and build z80 ASM source code into .8xp files, all the necessary tools and include files, and additional programs to simplify writing headers for BASIC programs. If you are interested in developing for Doors CS or even learning about what it offers to programmers, this SDK is a must-have.
I spent the last week or two working on this, but the compilation tools inside are the ones I have been using to develop programs over the past five years with great success. I've used it under a variety of platforms, and I think it will work to make ASM development a lot easier for newcomers to the community or to the language. In addition, the extremely detailed documentation on Doors CS' ASM and BASIC features should make it simple to find any information for which a developer may be searching. I look forward to many DCS programs being written soon, and I hope some of them will merit features here (besides of course being valuable entries in the upcoming contest!