[no subject]

[EAK at MIT-MC (Earl A. Killian)]

    Date: 18 January 1979 00:06-EST
    From: Mark L. Miller <MILLER at MIT-MC>
    To:   BUG-CRTSTY, BUG-LISP
    cc:   MILLER, MMCM, CBF, MOON, KLH at SU-AI

    I have some software that attempts to drive a peripheral device
    (a printer, usually) through the AUX port of a CRT.  It is nothing
    very elaborate, a bunch of LISP TYO's.  The critical thing is that
    they use IMAGE mode TTY file.

    When running under :CRTSTY IQ120 these do not work.  My hunch
    is that CRTSTY is intercepting the RAW CONTROL and ESCAPE CODES
    and "converting them to something harmless".  By opening the file
    in IMAGE mode, I have effectively told Lisp NOT to convert things
    to something harmless.  Isn't there some way it can pass this bit
    of advice on to CRTSTY?

Put a %TDQOT (octal 215) in front of each character to be sent
untouched.