\newcount\bmhpoz
\newcount\bmwid
\newif \ifbmblack
\newdimen\bmrlen
\newdimen\bmpsiz
\catcode`,=\active
\def\Bitmap#1#2{\vskip0pt % tla
 \bgroup
 \bmpsiz=#2
 \baselineskip=\bmpsiz
 \parskip=0pt % tla
 \parindent=0pt
 \bmrlen=0pt
 \catcode`,=\active
 \def,##10x##2##3{%
  \HexFig{##3}\HexFig{##2}%
  \advance\bmhpoz 8
  \ifnum\bmhpoz>\bmwid
  \0\hfil \vskip 0pt
  \bmhpoz=1 \bmrlen=0pt
  \fi}
 \def\HexFig##1{%
  \uppercase{\ifcase "##1}
  \0\0\0\0\or
  \1\0\0\0\or
  \0\1\0\0\or
  \1\1\0\0\or
  \0\0\1\0\or
  \1\0\1\0\or
  \0\1\1\0\or
  \1\1\1\0\or
  \0\0\0\1\or
  \1\0\0\1\or
  \0\1\0\1\or
  \1\1\0\1\or
  \0\0\1\1\or
  \1\0\1\1\or
  \0\1\1\1\or
  \1\1\1\1\fi
 }
 \def\0{\ifbmblack
  \vrule width \bmrlen height \bmpsiz
  \bmrlen=\bmpsiz \bmblackfalse
  \else
  \advance \bmrlen\bmpsiz
  \fi}
 \def\1{\ifbmblack
  \advance \bmrlen\bmpsiz
  \else
  \vrule width \bmrlen height 0pt
  \bmrlen=\bmpsiz \bmblacktrue
  \fi}
 \def\BmContent
   ##1_width ##2 ##3[] ##4 ##5;{%
  \bmwid=##2
  \bmhpoz=1
  ,##5
  }% end of \BmContent
 \expandafter\BmContent\@@input #1 
\egroup}% end of \Bitmap
\catcode`,=12 % other