[TUHS] unix v4 tape found

[Thalia Archibald via TUHS]

On Dec 20, 2025, at 07:37, Al Kossow via TUHS <tuhs at tuhs.org> wrote:
> The two bad blocks on the image have been fixed, so
> I've pushed that .tap file to
> http://bitsavers.org/bits/ATT/U-Utah_V4_tape
> along with a contents.txt of what all the blocks
> were.

Thank you, Al! For this and the whole event yesterday!

How did you fix the blocks? Did you use the analog waveform?

Yufeng Gao got in touch with me and has also recovered those blocks. He did it
first by eyeballing the ASCII, then by hacking readtape to dump the CRC and LRC
of each block and fixing a mistake in one of them. His matches yours.

Thalia