On Wed, Mar 8, 2023 at 3:11 AM Chris Zach via cctalk <cctalk@classiccmp.org> wrote: > > I noticed in a Dectape 2 document that the tape drives are just DC100 > models. Are there any specific documents on what kinds of signals should > be coming out or into them? > > I'd like to fix this TU58.
The drive unit from a TU58 is just the head, motor, tacho sensor and a couple of microswitches. It contains no electronics at all (unless you count the LED and phototransistor in the tacho sensor). All the electronics to handle the signals from those is on the controller board. This consists of a simple 8085-based system (IIRC, 8085 processor, 8155 RAM/IO, ROM, serial interface, etc) and the analogue read amplifier etc. -tony
