QUME DT/8 - anyone have a manual/schematic for this?

[Rick Bensene]

Chuck Guzis wrote:


>The QT-8/842 even uses the same power connector as an SA-800 (i.e. 6 
>pin locking).  And the motor is indeed AC.  I have QT-8's with both 
>120v 60Hz and 220v 50Hz motors--and a pulley to convert the 50Hz 
>motor to spin the drive at 360 RPM.

>Generally, the QT-8 is a drop-in for the SA-800 drives.  It mostly 
>has the same jumpers, including HS and 8/16/32 sector selection as 
>well as the same bezel configuration.

---
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 DT-8 (DataTrak-8) did have a spindle motor
that ran on Mains AC.  Back in the long ago days, I designed a floppy
controller that worked with DT-8's (using an LSI controller chip and a
custom data separator circuit).  It was used in a proprietary bus
structure system, that ran with Motorola 6809 CPU.  I wrote drivers for
FLEX and OS-9.  They were nice, fast drives, as floppy drives go.  As I
recall (and this might be incorrect), they were "half height" (as
compared to an SA-800) drives.

Rick Bensene
http://oldcalculatormuseum.com