pnch(4)

NAME
     pnch - file format for card images

DESCRIPTION
     The PNCH format is a convenient representation for files consisting of
     card images in an arbitrary code.

     A PNCH file is a simple concatenation of card records.  A card record
     consists of a single control byte followed by a variable number of data
     bytes.  The control byte specifies the number (which must lie in the
     range 0-80) of data bytes that follow.  The data bytes are 8-bit codes
     that constitute the card image.  If there are fewer than 80 data bytes,
     it is understood that the remainder of the card image consists of
     trailing blanks.