From: Christian Corti Sent: Wednesday, February 10, 2016 2:28 AM > On Tue, 9 Feb 2016, Pete Lancashire wrote:
>> There are a few odd balls in 9-track as well, but the 556 was a typo. > Really? > I actually *do* have a 9 track tape drive (HP 7970) that has 200/556/800 > bpi densities: > http://computermuseum.informatik.uni-stuttgart.de/pics/hp1000/hp7970_2.jpg > And it is a *9* track tape, I know for sure. Actually, what you have is a *dual-density* tape drive, an HP7970E. It will write 9-track tapes at 800bpi, or 7-track tapes at 200, 556, or 800. See the manual for the 7970 drive family at http://bitsavers.informatik.uni-stuttgart.de/pdf/hp/tape/7970/07970-90885_7970oper_Dec76.pdf Rich Rich Alderson Vintage Computing Sr. Systems Engineer Living Computer Museum 2245 1st Avenue S Seattle, WA 98134 mailto:ri...@livingcomputermuseum.org http://www.LivingComputerMuseum.org/
