Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!know!zaphod.mps.ohio-state.edu!swrinde!ucsd!ucbvax!WSMR-SIMTEL20.ARMY.MIL!WANCHO From: WANCHO@WSMR-SIMTEL20.ARMY.MIL ("Frank J. Wancho") Newsgroups: comp.sys.misc Subject: Mac Xmodem ??? Message-ID: Date: 29 Sep 90 02:52:00 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 17 Macbinary is a format for data transfer using the "xmodem" file transfer protocol. The file transferred appears as an ordinary binary file to the xmodem protocol machine. However, the data contains the information required in the embedded header for a receiving Macintosh to separate its component forks on-the-fly. Conversely, a sending Macintosh constructs the header and assembles the component forks into a single binary stream for the transfer. Such a stream can be stored on any intermediate machine as an ordinary 8-bit binary file using a conventional xmodem file transfer program on the intermediate machine. There are programs available for Unix and other systems to disassemble the single stream file into its component forks and reassemble them as well. The source for these programs contain the comments to describe the file structure. See PD2: here for several such files. --Frank