Impulse response function in non-standard VAR

[DORNAS]

As far as the VAR object does not allow to handle restrictions on lag coefficients and E-VIEWS guide suggest to estimate these VAR as a sytem,

Is there a convenient way to create impulse response functions for a system or any other way to obtain an IRF for a non-standard VAR?

[EViews Gareth]

Unfortunately there is nothing built in to do it, nor do I know of any programs that can.