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Andre,

Whilst Wikipedea says there was a 1401 emulator for DOS I have never seen a copy. I know the Turnkey MVS people have run the OS 1401 emulator under MVS. There was discussion here:-

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/g/turnkey-mvs/message/846

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but you will have to join the turnkey-mvs group to read it. Whilst I am not an expert moving code from OS to DOS isn’t trivial.

Around 20 years ago there was some discussion on 1401 emulation on the IBM-Main bitserv list which is in google groups here:-

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from what reading I have done the 1401 Fortran was somewhat limited.

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I expect that there was little use of Fortran II on 360. I can’t see what any Fortran II program wouldn’t run under one the 360 Fortran compilers. From what I remember there is nothing in Fortran II that isn’t in Fortran IV.

Even with the usual Fortran G compiler you would get quicker compiles and runs on a 360. In addition, if you were running Fortran H you would get much better performance.

So if you really want to torture yourself with Fortran II I think you for quickness you are down to the 1401 version either standalone or on Turnkey MVS.

If you want to run bigger programs, probably the 1620 on SIMH would be the best option. I will try and have a look at this later, but I always find producing working FORTRAN II code a challenge.

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Dave

p.s. there was also a 1620 emulator. There is info here:-

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