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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.arch
Subject: Re: Article on new mainframe use
Date: Sat, 31 Aug 2024 22:38:06 -0000 (UTC)
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On Fri, 30 Aug 2024 12:24:35 -0400, EricP wrote:

> VAX Fortran77 and other compilers and tools were developed concurrently
> with VAX hardware on the PDP-11 but emitting VAX instructions.

DEC was quite fond of BLISS at the time. Its high-performance “Fortran IV 
Plus” compiler for the PDP-11 was written in BLISS.

Trouble is, they were not able to get a decent BLISS compiler to fit 
within the limitations of the PDP-11. So the Fortran IV Plus compiler had 
to be built on a PDP-10.