On Tue, Jul 29, 2014 at 1:52 PM, Marco Rauhut <marco at familie-rauhut.eu> wrote:
Yes, the tape is a PDP-8 formated DECtape.
And yes, the controller working well with an other drive.
I tested all five G888 boards output on the clock track. On all boards i see
the clock sine on the read amplifiers output. On your question i invetigated
that on of the G888 shown always high. At a closer look i think there is
somthing self oszilating on this board....
The G888 is deliberately designed to oscillate, IIRC.