4 months
Bell Labs 'Unix' Tape from 1974 Successfully Dumped to a Tarball - Slashdot
tech.slashdot.orgArchive.org now has a page with "the raw analog waveform and the reconstructed digital tape image (analog.tap), read at the Computer History Museum's Shustek Research Archives on 19 December 2025 by Al Kossow using a modified tape reader and analyzed with Len Shustek's readtape tool." A Berlin-based...
The real question might be whether the compiler was smart enough to change
var++andvar--into++varand--varwhen the initial values aren’t needed.As compiler optimisations go, it’s a fairly obvious one, but it was 1974 and putting checks like that in the compiler would increase its size and slow it down when both space and time were at a premium.
Well, good news, the source code is right there. Someone can go check (it probably won’t be me)
I was going to guess the same regarding the time period.