7 Sep
2016
7 Sep
'16
5:51 a.m.
From: Ethan Dicks
12-sector packs are abundant compared to 16-sector
packs
Really? Most of the RK05 packs I've seen for sale on eBay in the last couple
of years have been 16-sector - so I naturally assumed they were more common.
Well, I guess that explains why my offer to trade drew such a response! :-)
Noel
7 Sep
7 Sep
9:05 a.m.
On Sep 7, 2016, at 8:51 AM, Noel Chiappa <jnc at
mercury.lcs.mit.edu> wrote:
Interesting. They are best known as PDP-8 packs, but there's another use for them and
I wonder if that is relevant. Some IBM systems -- the 360 model 44 for example -- have a
"2315" drive which is an RK05. And I vaguely remember seeing 16 sector slots in
that pack the one time I pulled it out of our college 360/44. The IBM manual speaks of 8
sectors per track, 366 bytes per sector. Weird. But 200 cylinders plus 3 spare, just as
for the RK05s we know.
paul
From: Ethan Dicks
12-sector packs are abundant compared to
16-sector packs
Really? Most of the RK05 packs I've seen for sale on eBay in the last couple
of years have been 16-sector - so I naturally assumed they were more common.
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