pnch(4) UNIX System V 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.
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