dos to unix CR/LF conversion?

James Knott james.knott-bJEeYj9oJeDQT0dZR+AlfA at public.gmane.org
Mon Nov 10 01:35:38 UTC 2003


Henry Spencer wrote:

>>Again with the old mechanical devices, it was often used to control the 
>>tape punch, though that was not the only use.  According to my trusty 
>>ASCII and Baudot card, from back in my tech days, it was called Device 
>>Control 2 (DC2).
> 
> 
> It was DC1 and DC3 that usually controlled the tape hardware, at least on
> the equipment I used.  But there may have been other variations.

DC1 & DC3 were used to control the tape reader and DC2 & DC4, the tape 
punch.  There were some Teletypes that had remote control punches, as 
well as readers.  Incidentally, I had an ASR 35 connected to my first 
computer, an IMSAI 8080.  I had it configured so that reading a byte 
from the UART would cause the reader to advance another character.

Those old machines had something called a "stunt box", which could 
detect various character combinations and either perform some mechanical 
funtion or operate a switch.  Some of them were quite complex.

Many years ago, I used to overhaul Teletype equipment.

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