This account contains BIGTPC which is used to make copies of the sig tape. BIGTPC can copy DOS,BRU, and DSC formatted tapes. First one uses BIGTPC to read a master tape into a big disk file. The file is as long as there are blocks on the tape. Then one uses BIGTPC to read that file and copy it back to a blank tape. The bugs in BIGTPC where it would hang up at the end are fixed. To read a master tape onto a disk one uses the following command line: RUN BIGTPC TPC> DN:RSXSP81.BRU=MT: To make a copy of the file onto a blank tape one uses the following command line: RUN BIGTPC TPC> MT:=DN:RSXSP81.BRU The only problem I know of with BIGTPC is that if you install it and use it as follows: TPC DN:RSXSP81.BRU=MT: It will work, but the file RSXSP81.BRU will be in directory [0,0].