BASIC-Plus decompiler

At 12:25 PM 8/6/2008, Paul Koning wrote: As has happened many times before, the same topics get rehashed on this list even by the same people. So Paul, we crossed this topic about three years ago. :-) http://www.classiccmp.org/pipermail/cctech/2005-May/044445.html There are two decompilers mentioned in this RSTS history: http://elvira.stacken.kth.se/rsts/rsts_80th_birthday.html 1974 February-Clark Baker, George Robbins, Dan Grim and Ed Baker write the PPCODE Basic Plus Decompiler. 1978: October-Nick de Smith returns to Dulwich College, where he had been a student between 1967 and 1976, to write the DECOMP Basic Plus Decompiler. 1990: July-SPL announces special anniversary ?offers? on various software products including The Link, BAS24K, BP3, RPM, DECOMP, SORT1 and REPGEN. (The name George Robbins caught my eye, as I knew him from Commodore and the Amiga. Other googling makes it apparent it's the same guy who worked on the 1974 decompiler, and sadly, it seems he passed away in 2002.) Perhaps we're just arguing about semantics. If BP2 was a true compiler, to me that means it was emitting native CPU code in an executable format - no interpretation needed. So you're saying this decompiler was reading CPU opcodes and mapping them correctly back to BASIC code? That it wasn't just detokenizing something that ran through an interpreter? It would probably be easier for us to find on the net the BASIC source code for this decompiler I'm thinking of, than for me to find my copy in my own archives. Then we could study the source code. The Spring '80 DECUS tape from Chicago RSTS SIG matches my timeframe and locale, as well as the tape being submitted by someone close to George's origin in Delaware: http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/decus/1… "[80,19] BASIC-PLUS-1 DECOMPILER: two programs, one data file BASIC-PLUS-1 reverse compiler" Bill Gunshannon was looking for it in 5/07 on comp.sys.dec, too. http://unix.derkeiler.com/Newsgroups/comp.sys.dec/2007-05/msg00008.html - John