[ale] Connecting to r-pi

[Alex Carver]

The CR also permitted the return so a row could be double struck for
bolding or multipart forms that required double striking to ensure
print-through. Not all teletypes were so slow but yes sliding back along
the row would be slightly slower than just rolling the paper up one line.

Additionally the independent LF allowed typing vertically (with a
backspace after the LF) as well as staggered lines. The two independent
control characters were quite valuable for basic typesetting.

On 2018-10-24 13:03, Scott Plante wrote:
> If you're inclined to believe Wikipedia, the early teletypes would
> actually perform a carriage return to the left and line feed the paper
> up one row on a LF, but the CR was necessary because of timing--it took
> longer than the gap between characters to physically return the print
> head so they added the CR to allow enough time. Apparently they
> sometimes had to add NULs as well. Even some CRT terminals took too long
> to scroll all the text up. Apparently they didn't have flow control back
> then.
> 
> I used to have a TRS-80 and a "Gorilla Banana" printer. I could never
> get the flow control to work with it, and had to write a program to
> print stuff. It would manually pause a fraction of a second after each
> line before sending the next one to the port. Those were the days! ha ha
> 
> https://en.wikipedia.org/wiki/Newline
> http://mrweese.blogspot.com/2007/06/gorilla-banana.html
> 
> --
> Scott Plante 
> 
> ------------------------------------------------------------------------
> *From: *"Alex Carver via Ale" <ale at ale.org>
> *To: *ale at ale.org
> *Sent: *Wednesday, October 24, 2018 3:34:26 PM
> *Subject: *Re: [ale] Connecting to r-pi
> 
> You do realize CRLF is older than Gates having come from the exact way a
> teletype machine works, right? CR and LF are distinct functions and *nix
> took a lazy approach to combine the two into a single character.