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- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!mips!mips!btr!thad
- From: thad@btr.BTR.COM (Thaddeus P. Floryan)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Tape SCSI medium error (HardFrame/Viper)
- Message-ID: <7585@public.BTR.COM>
- Date: 30 Jul 92 11:25:07 GMT
- References: <1992Jul22.082818.9753@rdg.dec.com> <1992Jul23.230804.2738@gtephx.UUCP> <62742@cup.portal.com>
- Organization: BTR Public Access UNIX, Mountain View CA
- Lines: 27
-
- In article <62742@cup.portal.com> TomK@cup.portal.com (Tom R Krotchko) writes:
- >Is the DC600 the correct tape for the Viper? I thought it took
- >6150/6250 type tapes. I realize they're the same form factor, but
- >there's a difference (I haven't a clue as to what).
-
- Depends which Viper! :-)
-
- The Viper 2060S is QIC-24, 9-track, 60MB with DC600A tapes; the Viper 2150S
- is QIC-150, 18-track, 150MB with DC6150 and 250MB with DC6250 tapes.
-
- Among other things, the media of the DC6150/DC6250 varieties is much more
- highly calendered (meaning: smoother). [and, yes, I did spell it correctly]
-
- In another newsgroup, someone commented that inserting a DC600A tape into
- a QIC-150 drive (such as the Viper 2150S) forces it to write in QIC-120
- mode. This sounds plausible, but I've been unable to verify it, though a
- recently-posted extract from the Viper manual in comp.periphs.scsi alludes
- the same.
-
- There don't appear to be any physical differences in the QIC cartridge
- housing itself between a DC600A and a DC6150, so "maybe" the hole pattern
- at BOT and EOT somehow encodes the tape type. In case people aren't aware,
- the reason for the mirror in the cartridge is for BOT and EOT sensing of
- the holes punched in the tape itself (since QIC tape doesn't have any
- clear leaders as do Compact Cassette tapes).
-
- Thad Floryan [ thad@btr.com (OR) {decwrl, mips, fernwood}!btr!thad ]
-