sid@linus.UUCP (Sid Stuart) (04/04/84)
The following is from Bill Shannon in reply to my question about the TU80 screwing up dump. Since I received 15 letters on this, I thought it might be of general interest. Thanks Bill. Date: Sat, 24 Mar 84 21:21:26 pst From: decvax!decwrl!sun!shannon (Bill Shannon) Subject: Re: tu80 problem In-Reply-To: your article <834@linus.UUCP> The tu80 normally uses a 1.2" interrecord gap instead of .6" like most other tape drives. Dump assumes a .7" IRG. I believe you can change the tu80 to use a .6" IRG at the cost of giving up any chance of streaming (which you probably aren't doing anyway). The tu80 is really a CDC Keystone; if you can't get a manual from DEC try CDC. Bill Shannon P.S. 4.2 dump will assume a 1.2" IRG on a Sun, I believe the code is still ifdef-ed in there so it should be easy to change. It would be nice if there was an ioctl to return the IRG but the same tape controller can control drives of both tapes so there's no way of finding out the drive's IRG, you have to have some way of "knowing" it.