Re: USB-serial adapter suggestions needed

From: John F Carr <jfc_at_mit.edu>
Date: Wed, 27 Dec 2023 13:48:33 UTC 

> On Dec 27, 2023, at 03:30, Mark Millard <marklmi@yahoo.com> wrote:
> 
> 0000: 6C 6F 67 69 6E 3A 20 C3 AF C2 BF C2 BD C3 AF C2  login: .........
> 0010: BF C2 BD C3 AF C2 BF C2 BD C3 AF C2 BF C2 BD C3  ................
> 0020: AF C2 BF C2 BD C3 AF C2 BF C2 BD C3 AF C2 BF C2  ................
> 0030: BD C3 AF C2 BF C2 BD 0A 50 61 73 73 77 6F 72 64  ........Password
> 0040: 3A                                               :
> 
> The byte pairs that start with C3 's and C2's look far from
> random to me --also they do not look like glitches.

Those byte pairs are valid UTF-8.

C3 AF = 000 1110 1111 = EF
C2 BF = 000 1011 1111 = BF
C2 BD = 000 1011 1101 = BD

What EF BF BD means, I can't say.  As Unicode it is "�".
Maybe UTF-8 encoded 8 bit line noise.