🚀 go-pugleaf

In article <0095EBBC.51676F80@FHYDRA.FYSEL.UNIT.NO> dahls@fhydra.dnet.unit.no (Joern Yngve Dahl-Stamnes) writes:

>When is the IRQ required on a printer port. I have read that the DOS
>command 'print' need IRQ. What about windows. Does the print manager
>need IRQ? Or could I just remove my IRQ's from the LPTn ports and
>use them for my COM3 and COM4?

I know about only one place where you DO need an active IRQ on a printer 
port, namely, on a print server (or on a system running the RPRINTER 
program) under Novell's Netware 3.1.  You may get along without hardware 
interrupts on a dedicated print server, but you definitely need them in 
conjunction with RPRINTER.  (By the way, one of the major troubles there is 
that it is extremely difficult nowadays to get a printer card which (a) 
allows to enable/disable the hardware interrupt altogether, and (b) permits 
to select any other interrupt than IRQ7 (unless by using crude force and 
a soldering iron).  Therefore, you may have two printer cards in one system 
which work fine under DOS but which you hardly can get to work under 
Netware. -:()

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