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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% %%
%% A S C I I wall chart %%
%% %%
%% by Victor Eijkhout %%
%% victor@eijkhout.net %%
%% %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Copyright 2009 Victor Eijkhout
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3
% of this license or (at your option) any later version.
% The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is Victor Eijkhout.
%
% This work consists of this file.
%
%% Choose your favourite format:
%
\nopagenumbers %% 2 lines
\vsize=28cm %% for PLAIN TeX
%\documentstyle{article} %% 4 lines for LaTeX
%\begin{document} %% not that it matters anything,
%\pagestyle{empty} %% rest of the document
%\setlength{\textheight}{28cm} %% is 'pure' TeX.
%%%%%% and don't forget the \bye / \end{document} at the end!! %%%%%%%
%% fonts
\font\bitfont=cmr7 \fontdimen3\bitfont=3mm
\font\codefont=cmr5
\font\namefont=cmss10 scaled 1200
\font\titlefont=cmss10 scaled 1440
\font\commentfont=cmss10
%% counts and dimens
\newdimen\thinlinewidth \thinlinewidth=.25mm
\newdimen\fatlinewidth \fatlinewidth=.5mm
\newdimen\rowheight \rowheight=1cm
\newdimen\colwidth \colwidth=1.6cm
\newdimen\Colwidth \Colwidth=2\colwidth
\advance\Colwidth by \thinlinewidth
\newdimen\topwhite \topwhite=2pt
\newdimen\botwhite \botwhite=3pt
\newdimen\leftwhite \leftwhite=2pt
\newdimen\rightwhite \rightwhite=2pt
\newcount\rowcount \rowcount=-1 %% note!
\newcount\colcount \colcount=0
\newcount\thenumber
%% tidbits
\def\\{$\backslash$}
\def\thinline{\vrule width \thinlinewidth}
\def\fatline{\vrule width \fatlinewidth}
\tolerance=10000
\vbadness=10000
%% code conversion
\def\calcnumber{{\multiply\colcount by 16
\advance\colcount by \rowcount
\global\thenumber=\colcount}}
\def\deccode{\number\thenumber}
\def\octcode{{\ifnum\thenumber>63
\advance\thenumber by -64
\count0=\thenumber \divide\count0 by 8
1\number\count0
\else \count0=\thenumber \divide\count0 by 8
\ifnum\count0>0 \number\count0 \fi\fi
\multiply\count0 by 8
\advance\thenumber by -\count0
\number\thenumber}}
\def\hexdigit#1{\ifcase#1 0\or 1\or 2\or 3\or 4\or 5\or 6\or 7\or
8\or 9\or A\or B\or C\or D\or E\or F\or
\edef\tmp{\message{illegal hex digit
\number#1}}\tmp
\fi}
\def\hexcode{{\count0=\thenumber \divide\count0 by 16
\ifnum\count0>0 \hexdigit{\count0}\fi
\multiply\count0 by 16
\advance\thenumber by -\count0 \count0=\thenumber
\hexdigit{\count0}}}
%% the heading
\def\threebit#1#2#3{\vbox to 1.2\rowheight{\bitfont
\vskip\topwhite
\hbox to \colwidth{\hskip\leftwhite#1\hfil}
\vfil
\hbox to \colwidth{\hfil#2\hfil}
\vfil
\hbox to \colwidth{\hfil#3\hskip\rightwhite}
\vskip\botwhite}}
\def\comment#1{\vbox to \colwidth{\hrule height 0mm depth .25mm
\vfil
\hbox to \Colwidth{\commentfont\hfil#1\hfil}
\vfil}}
\def\dcomment#1#2{\vbox to \colwidth{\hrule height 0mm depth .25mm
\vfil
\hbox to \Colwidth{\commentfont\hfil#1\hfil}
\vskip \botwhite
\hbox to \Colwidth{\commentfont\hfil#2\hfil}
\vfil}}
\def\bithead{\vbox to \colwidth{\hsize=1.5\colwidth
\vskip\topwhite
\hbox to \hsize{\commentfont\hfil BITS\hfil}
\vfil
\hbox to \hsize{\bitfont\ b4 b3 b2 b1 }
\vskip\botwhite}}
%% routines for single chars
\def\fourbit#1\fb{\vbox to \rowheight{
\vfil
\hbox to 1.5\colwidth{\bitfont #1\ }
\vfil}%
\global\advance\rowcount by 1
\global\colcount=0}
\def\asc#1\ii{\calcnumber
\vbox to \rowheight{\offinterlineskip
\vskip\topwhite
\hbox to \colwidth{\codefont
\hskip\leftwhite
\deccode\hfil}
\vfil
\hbox to \colwidth{\vrule width 0cm
height 10pt depth 2pt
\namefont
\hfil#1\hfil}
\vfil
\hbox to \colwidth{\codefont
\hskip\leftwhite
\hexcode\hfil\octcode
\hskip\rightwhite}
\vskip\botwhite}%
\global\advance\colcount by 1}
%%%%%%%%%%%%%%%%% and now the table itself %%%%%%%%%%%%%%%%%%%%%%%%%
\vbox{
\halign{\fourbit#\fb&\fatline\asc#\ii&\thinline\asc#\ii&
\fatline\asc#\ii&\thinline\asc#\ii&
\fatline\asc#\ii&\thinline\asc#\ii&
\fatline\asc#\ii&\thinline\asc#\ii\fatline\cr
\omit&\multispan8 \hskip\thinlinewidth
\titlefont ASCII CONTROL CODE CHART\hfil\cr
\noalign{\vskip3mm \hrule}
\omit\hfil\threebit{b7}{b6}{b5}
&\omit\fatline\threebit000&\omit\thinline\threebit001%
&\omit\fatline\threebit010&\omit\thinline\threebit011%
&\omit\fatline\threebit100&\omit\thinline\threebit101%
&\omit\fatline\threebit110&\omit\thinline\threebit111%
\fatline\cr
\noalign{\vskip-.5mm} %brute force
\omit\bithead
&\omit\fatline\comment{CONTROL}\span\omit
&\omit\fatline\dcomment{SYMBOLS}{NUMBERS}\span\omit
&\omit\fatline\comment{UPPER CASE}\span\omit
&\omit\fatline\comment{LOWER CASE}\span\omit\hfil\fatline\cr
\noalign{\hrule}
{} 0 0 0 0&NUL&DLE&SP &0 &@ &P &` &p \cr\noalign{\hrule}
{} 0 0 0 1&SOH&DC1&! &1 &A &Q &a &q \cr\noalign{\hrule}
{} 0 0 1 0&STX&DC2&" &2 &B &R &b &r \cr\noalign{\hrule}
{} 0 0 1 1&ETX&DC3&\# &3 &C &S &c &s \cr\noalign{\hrule}
{} 0 1 0 0&EOT&DC4&\$ &4 &D &T &d &t \cr\noalign{\hrule}
{} 0 1 0 1&ENQ&NAK&\% &5 &E &U &e &u \cr\noalign{\hrule}
{} 0 1 1 0&ACK&SYN&\& &6 &F &V &f &v \cr\noalign{\hrule}
{} 0 1 1 1&BEL&ETB&' &7 &G &W &g &w \cr\noalign{\hrule}
{} 1 0 0 0&BS &CAN&( &8 &H &X &h &x \cr\noalign{\hrule}
{} 1 0 0 1&HT &EM &) &9 &I &Y &i &y \cr\noalign{\hrule}
{} 1 0 1 0&LF &SUB&* &: &J &Z &j &z \cr\noalign{\hrule}
{} 1 0 1 1&VT &ESC&+ &; &K &[ &k &$\{$\cr \noalign{\hrule}
{} 1 1 0 0&FF &FS &, &$<$&L &\\ &l &$|$ \cr \noalign{\hrule}
{} 1 1 0 1&CR &GS &$-$ &= &M &] &m &$\}$\cr \noalign{\hrule}
{} 1 1 1 0&SO &RS &. &$>$&N &\char94 &n &\char126\cr
\noalign{\hrule}
{} 1 1 1 1&SI &US &/ &? &O &\_$\!$\_&o &DEL\cr\noalign{\hrule}
\noalign{\vskip2mm}
\omit&\omit\namefont \hfil LEGEND:\hfil \span\omit
&\multispan4\hskip\fatlinewidth
\vtop{\vskip-10pt\hbox{\vrule
\vbox to \rowheight{
\offinterlineskip
\hrule\vskip \topwhite
\hbox to \colwidth{\codefont\hskip\leftwhite
dec\hfil}
\vfil
\hbox to \colwidth{\namefont\hfil CHAR\hfil}
\vfil
\hbox to \colwidth{\codefont\hskip\leftwhite
hex\hfil oct
\hskip\rightwhite}
\vskip\botwhite
\hrule }%
\vrule}}
\hfil
&\multispan2\bitfont \hskip\fatlinewidth
\vtop{\vskip-8pt\baselineskip=8.5pt
\hbox{Victor Eijkhout}
\rlap{Dept. of Comp. Sci.}
\rlap{University of Tennessee}
\rlap{Knoxville TN 37996, USA}
}\hfil\cr
}
}
%%%%%%%%%%%%%%%%%%%%%%% and that's it folks! %%%%%%%%%%%%%%%%%%%%%%%%%%
\bye %% PLAIN TeX
%\end{document} %% LaTeX
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