I've been processing some PDP-11 9 track (800 NRZI) tapes and run across something that I don't recognize.
Every file on the tape consists of a number of 512 byte blocks (okay, that's normal) but at the head of each file, there's a short block of 14 bytes. Usually, a short record like this is discarded as "noise" on many mainframe tape systems, but here it's consistently present. Here's what one of the records looks like: 15 34 fe 51 fe 76 01 01 00 00 01 80 10 00 Doesn't seem like a file name in RAD50 format, so I'm puzzled. Inquiring minds want to know... Thanks, Chuck
