28 Oct
2008
28 Oct
'08
7:53 p.m.
On 28 Oct 2008 at 16:23, Rick Bensene wrote:
Is there a difference between a QT-8 and (what the
original poster asked
about) the DT-8? I know that the DT-8 was a double-sided,
double-density drive.
The Bitsavers docs for the 842 identifies the 842 as the "Datatrak
8":
http://www.bitsavers.org/pdf/qume/30006_QumeTrak842pd_Apr79.pdf
My own drives are labeled as "QumeTrak 842", but match the (full-
height) drives described in the aforementioned (DT-8) document
perfectly. It could be that Qume models had a name change sometime
around 1980 or so.
The QumeTrak 242 is the half-height 8", but I don't believe it was
ever referred to as a "DataTrak 8". It used a DC spindle motor and
did not have native hard-sector (i.e. sector output and 32/16/8
sector selection; also, no optional on-board FM data separator.) As
far as built-like-a-battleship-ness goes, a poor relative to its full-
height 842 cousin. But if the OP has the 242, there's a document for
it also on bitsavers.
Cheers,
Chuck