16 Feb
2025
16 Feb
'25
1:13 p.m.
On Sun, 2025-02-16 at 20:44 +0000, Wayne S wrote:
Is it posted anywhere?
It's at http://vandyke.mynetgear.com/1401/progs/Fortran/ but not really
organized well.
The ones I reverse engineered are in directories named v3m0 and v3m4.
Gary's code is in Mokotoff. The version I revised for CHM is in v4.
There's a paper from IBM System Journal that describes it,
at http://vandyke.mynetgear.com/1401/docs/FortranII_1401_SerialCompiler_IBMJR&…
>
> The IBM 1401 FORTRAN II compiler consisted of 63 phases. It read
> the
> program into core, then loaded phases that massaged what it had in
> core
> until it eventually had machine code. It ran from a deck of about
> 2,500
> cards, or from one tape. I have source code for it, and for a
> version I
> revised for the Computer History Museum. I reverse engineered
> operational tapes for two versions. Then the original author, Gary
> Mokotoff, found listings he thought he had lost when he retired. I
> transcribed his listings and assembled them. My code has more
> comments.