Format of '.tap' files on bitsavers ...

Eric Smith eric at brouhaha.com
Sat Mar 12 01:56:38 CST 2005


John Sambrook wrote:
> Anyone know the format of ".tap" files found on
> www.bitsavers.org/bits/... ?

It's John Wilson's tape image file format.

A data record consists of a four byte record length, the data,
then another copy of the record length.  The record length is stored
in little-endian byte order.

A tape mark is fourbytes of zeros.

There are no extra padding bytes to force any alignment.

Bob Subnik's SIMH tape image file format is similar except that it
uses 16-bit alignment.  SIMH comes with utilities to convert the
formats.

There are also some simple tape image utilities at:
    http://www.brouhaha.com/~eric/software/tapeutils/

Eric




More information about the cctalk mailing list