On Sat, May 30, 2020 at 3:27 PM Fred Cisin via cctalk <cctalk@classiccmp.org> wrote:
> >> One reaason why you don't hear much about that is because the first > >> version of Microsoft Fortran for the PC wasn't real great. > >> It was written in Microsoft Pascal. > > On Sat, 30 May 2020, John Foust via cctalk wrote: > > Really! > > How does this connect to Microsoft's FORTRAN-80 for CP/M circa 1977? > > unrelated product, with no apparent connections, that I'm aware of. The > 8080/Z80 FORTRAN-80 would have been a better starting point! > Bob Wallace wrote the original Microsoft Pascal; I don't know who wrote > the Fortran, other than being told that it was written in Microsoft > Pascal, and to avoid the run-time library. > I assume you mean that Microsoft Fortran for the PC was written in Pascal. I did some reverse-engineering of the Microsoft FORTRAN-80 compiler, and it appears to be hand-written in 8080 assembly. On the other hand, Intel also had a FORTRAN-80 product, which was unrelated to Microsoft FORTRAN-80. Intel FOTRAN-80 ran on their MDS development systems under the ISIS-II operating system, and the compiler was written in PL/M.