ON THE IMPLEMENTATION OF THE DESCRIPTIVE DATA BASE, BASED ON CDL1

In previous reports, CDL1 -- a computer description language -- has been defined and discussed. The report discusses the implementation of a system of programs, on the RCA Spectra 70 computers, to generate appropriate file structures from computer descriptions written in CDL1. This translation to a DDB -- descriptive data base -- involves syntactic analysis and a certain amount of checking for internal consistency, as well as the creation of directory entries, etc. Once the type of DDBs described in this report can be generated, a variety of design-aid systems can be based upon them, saving a duplication of effort, guaranteeing an integrated overall system, and avoiding built-in obsolescence.