I used the Initialize Tape (INZTAP) command to initialize a tape to 1600bpi and then used the Copy To Tape (CPYTOTAP) command to put data on the tape. Much to my surprise, when I dumped the tape, I found that the tape was initialized to 6250bpi instead of 1600bpi.
The CPYTOTAP command doesn't allow you to specify the density; it uses the density of the tape file you specify in the TOFILE parameter (QTAPE in my case). QTAPE is a default tape data device file found in QGPL library with the density set to *DEVTYPE, which in our case is 6250.
To get around the problem, I created a new tape file and specifically set the density to 1600bpi. I then referenced the new tape file in the TOFILE parameter of the CPYTOTAP command.
- Sharla Tolleson