Note e DELAY_ROLL procedure is used for deciding the rate at which rotation occurs.
For slow rotation, this delay can be made high.
9.11|Interfacing a Stepper Motor to the 8086
Introduction to Stepper MotorsA stepper motor is an electromechanical device which
converts electrical pulses into discrete mechanical movements. When electrical pulses are
applied to it, the shaft of the motor rotates in steps and this type of movement gives the motor
its name.
Principle of Operation
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