Add a table with a registers

[vazhnov]

Thank you for a book!

What do you think about to add a table like here https://bronzebeard.readthedocs.io/en/latest/assembly_language.html#registers (MIT license) into your chapter "1.1.2.3 Registers"?

P.S.: If yes, I would recommend to expand this table with pc register.

[johnwinans]

Yeah, the intro chapter needs work. Maybe a table in there would help. I guess I could copy the table on page 58? I suppose I could add an extended box to the bottom showing the PC.

[vazhnov]

Oops, I see this table in "5.4 CPU Registers", on the page 58. Sorry :) But pc register can be added into this table, with the same alias.