Thanks for the reply. The K1000?guide does say an oscilloscope is needed to perform some of the troubleshooting. Unfortunately, ?I only have a cheap portable?scope with
?very limited functions.??
On Wednesday, February 10, 2021, 11:28 PM, mjkirk12 via groups.io <mjkirk12@...> wrote:
DTACK is Motorola 68000 CPU signal? for Data Transfer Acknowledge.? ? It is very fast signal? - a few tens of nanoseconds in duration.
To see it toggle, you would need an oscilloscope or logic analyzer set to edge trigger on the event.
Some info on the topic:?https://en.wikipedia.org/wiki/DTACK_Grounded
