Non-baking cure for sticky shed? (being serious for a moment)
elson at pico-systems.com
Mon Jan 18 13:48:26 CST 2016
On 01/18/2016 11:53 AM, js at cimmeri.com wrote:
> On 1/18/2016 12:46 PM, Jon Elson wrote:
>> Last year I read in some 1993 backups of my MicroVAX
>> system with no trouble at all. I did have to clean the
>> tape head after every tape, but that wasn't greatly
>> different from when the tapes were new.
> What media were those backups on (eg. TK70)?
9 track, 6250 BPI, recorded on CDC Keystone (92185)
streaming drives, and read back on the same type.
I built an interface so I could read the tapes in on a Linux
system, and then used some publicly available software to
unpack the BACKUP formatted images to native Linux files.
The Pertec formatted tape interface is quite simple. My
interface is pretty simple, though, and is controlled
through the parallel port, so the tapes are processed at 25
IPS start/stop mode.
If I were going to do it now, I'd use a Beagle Bone, and it
probably would stream at 75 IPS.
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