Output blocksize on Fujitsu 9-track

[Henry Spencer]

In article <638 at brchh104.bnr.ca> mtxinu!sybase!sid at ucbvax.berkeley.edu (S. Cowles) writes:
>...When XX is 63 and smaller, the operation works
>fine, no surprises.  64 and larger blocksizes cause the error...

You don't specify what controller your magtape drive is on.  For a guess,
it's a Xylogics 472.  The byte-count field on that controller is 16 bits.
It is incapable of writing a block bigger than 64K-1 bytes.

"The average pointer, statistically,    |Henry Spencer at U of Toronto Zoology
points somewhere in X." -Hugh Redelmeier| henry at zoo.toronto.edu   utzoo!henry