How was the value for parport.0.reset-time detrmined?

Stepconf and the examples use 5000 (nS) for this setting. Does anyone recall how this was determined?

Reset triggered and pins monitored on a scope on a LPT port on PC's made in circa 2000?

linuxcnc.org/docs/html/hal/parallel-port...ub:parport-functions

github.com/LinuxCNC/linuxcnc/blob/master...al/parallel-port.txt

The example shows: setp parport.0.reset-time 5000

Its set to match the step time requirements of the connected step motor
drives. The actual time will likely be longer depending on how the port
is interfaced (PCI would be faster than ISA which would be faster than LPC)

I didn't look into how the driver works with parport.0.reset-time.

Yes the bus and LPT used controller would determine what the reset time is for the pins. I am wondering why 5,000 (nS) is chosen in the examples and in stepconf.

When using stepconf the variables entered for step pulse forming are:

Step Time
Step Space
Direction Hold
Direction Setup

reset-time is not asked.

github.com/LinuxCNC/linuxcnc/blob/master...al/parallel-port.txt
explains the function 'parport.<p>.reset'

Normally reset is just used to set the step time