sequential (102) no realistic serial circuit (left shift)

https://wodewangzhishime.blogspot.com/2023/12/blog-post_13.html

.

Ref: https://wodewangzhishime.blogspot.com/2023/12/blog-post_13.html .

.

.

.

John: This article (https://wodewangzhishime.blogspot.com/2023/12/sequential-99.html) say that Left shift is a way of hacking.

Me: To some extent "Yes".

John: OK. In reality, we don't need "Left-Shift" to change the contents of (subject-interrupt-object).

Me: Then, what do we need?

John: We need to hack the clock line of RJ45. Read this article. ( https://wodewangzhishime.blogspot.com/2023/12/blog-post_14.html ). This article say "parallel in out line" is the branch of the clock line of RJ45.

Me: OK.
John: Look at the picture above. Originally, the output of the field of subject-interrupt-object is 0-1-0. . Because, the parallel out line is a branch of the clock line of RJ45, hacker hack the clock line of RJ45 and then hacker can control the parallel out line. Hacker let the output of subject-interrupt-object be 1-0-1 instead of 0-1-0.

.

Me: Oh! My God.

John: Correct. Indeed, we don't need to use left shift to change the contents of subject-interrupt-object.