[Simh] Is the CDC 1700 FORTRAN compiler available?

Leo Broukhis leob at mailcom.com
Mon Jan 30 00:35:10 EST 2017


In the very first BESM-6 FORTRAN compiler -- the one derived from the CDC
1604 FORTRAN compiler by manually retargeting the assembly language source
-- there is a peculiar bug: the line
IF (X=Y) stmt
which should be rejected as syntactically incorrect (and is rejected by
another, independently written compiler), does compile, and the resulting
code is like
X=Y
IF(0.NE.0) stmt

I'd like to check if the bug was there in the CDC compiler, or was
introduced in the process of retargeting. As there is no CDC 1604 emulator
in SIMH, CDC 1700 is the closest thing available (I know that their
architectures are different; it's still worth checking in case the CDC 1700
compiler uses the same parsing algorithm).

Does anyone have the knowledge how to run FORTRAN on the CDC 1700 emulator?

Thanks,
Leo
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