15 Nov
2019
15 Nov
'19
6:51 p.m.
On 11/15/19 1:29 PM, Chuck Guzis via cctalk wrote:
On 11/14/19 1:38 PM, Al Kossow via cctalk wrote:
I must have about 15 maybe more of the D540s and have found them
to be the fastest seeking of the MFM drives and also near unbreakable.
The oldest is about 36 years old. Use them in CP/M crates, DOS boxen,
PDP-11s (with RQDX2/3 controllers) and Local swap for net booted
uVAX2000 and swap file disks on uVAXII (61K blocks is more than
enough swap space) for VMS5.44.
I've not had stiction problems... likely because I have spares!
Its a Murphy's law thing.
Allison
These showed up on eBay, I'd been looking for
them for over twenty years
http://bitsavers.org/pdf/quantum/Q500/81-50466A_Q500_Technical_Reference_Ma…
http://bitsavers.org/pdf/qunatum/Q2000/81-49218A_Q2080_Technical_Reference_…
Thanks for that--I've had a Q540 in service for longer than I care to
speculate. Lately, it's gotten to be a little recalcitrant to start up,
but has yielded to repeated power cycling.
--Chuck