Hi mjz0010,
You're right, CW 55xx v1.5 was a full product line including IDE, project management, build tools EPPC and ETPU and debug tools. Note that ETPU compiler was coming from Bycraft.
Current version CW 55xx v2.0 is a build only product line, and targetting EPPC only. It includes IDE, project manager and EPPC build tools. Every thing else has to come from different third parties, Bycraft, Lauterbach, I-Systems...
Between the 2 versions, the EPPC compiler has been updated to a newer FrontEnd, which is less permissive with Standard (ANSI-C) compliancy.
Hope this helps...
Best Regards