HP-IL and EMU71

[Sylvain Cote]

(03-04-2024 11:10 PM)rprosperi Wrote:  But also remember to treat the virtual Emu71 just like a real device, including doing OFF IO before you power off to change the loop configuration, make the changes, then power EMU71 On and use RESTORE IO again to configure the loop, and you should be OK.

It is not necessary to do a OFF IO before doing a loop change.

• IO disabled → POWER OFF send nothing.
• IO disabled → POWER ON send nothing.
• IO enabled → POWER OFF send nothing or send a LPD message (Loop Power Down).
• IO enabled → POWER ON send nothing.
• RESTORE IO → reconfigure the loop but does not query the devices for their Accessory ID.
  

When I decide to use the 71B unplugged and before removing the HP-IL cables, I normally do a OFF IO to prevent a delay at power on.