Running 4 local LPT (parallel) printers in WinXP. Can't Select in driver properties (port settings) LPT4
Posted on 2006-05-12
Hi im running a number of applications which are required to run off parallel ports, else the application developers will not support the application. They don't support printers running off USB.
Unfortunely I needed to install 4 printers, but after adding another parallel addon card which installed correctly, WinXp refuses to allow me to assign to the port a dedicated LPTX Number.
Other than (LPT1, LPT2 and LPT3), which the three other printers must run on.
Under the driver properties page, port settings tab:
LPT Port Number: [LPT1],[LPT2],[LPT3]
I have tried adding to the registry:
This did not work (tried rebooting ect). Driver properties page did not update. Only printer port page works where I can select LPT4, but this is not redirected to real LPT4 parallel port.
1) Now is there a registry hack to allow windows to support this?
2) Can I swap the driver properties pages dynamically, to link on port to LPT3 and another to null and back again without a reboot? (using devcon or someother application?)
3) Im am not intersted in a hardware switch.