Exercise 5.49 - read-compile-execute-print - ridiculously simple, because (compile) and (assemble) are admitted as 'primitives' in the register machine
cleaned up slightly
cleaned up and submitted to wiki
diction
start with unmodified ch4-mceval.scm
expunged exp keyword
mceval should be able to run factorial now
set up convenient regression test and desugared all (let) statements from mceval
it's compiled and running, and even running trivial functions, but addition is no good?
Exercise 5.50 - COMPILE AND RUN MCEVAL ON TOP OF ECEVAL