Re: [CAD_CAM_EDM_DRO] EMC/Gecko/Parallel Port interface

Alan Marconett KM6VV wrote:

> Hi Allan,
>
> You might want to check through previous posts for more info.
> Previously, it has been suggested that you "steal" +5v from either the
> joystick connector, or the keyboard connector. A wall wart can also be
> used. You do NOT want to just hang a 5v regulator on the MOTOR +40v (or
> whatever) supply!
>
> I would assume that standard parallel ports at 378h, 278h, possibly even
> 3BCh would be recognized, as they are initially recognized and "mapped"
> (addresses recorded) into six words at addresses 40:8 in memory.
> Linux/EMC could either use these, or find them on it's own. At any
> rate, these standard addresses are you best bet. After that, Linux/EMC
> *MIGHT* do even more for you!

You edit the .ini file to tell it what address is used for stepper control and
limit
switches (one address) and what address is used for auxilliary (estop,
spindle,
coolant, etc) (another address). These are not limited in any way to the
standard parallel port addresses, as long as they follow the convention of
which bits in which address are "data bits" and which are "control bits"
in the fashion of the standard parallel port.

Jon