Paul Sprague <[log in to unmask]> wrote:
> Hello all,
>         I have a situation(not a problem) on my system that has me puzzled and
> I
> was wondering if any of you could explain it to me. I have my LPT 1 port
> which comes off the motherboard (Baby AT Form Factor with a TX Chipset)
> using IRQ 7 and IO range 0378-037F. I also have a standard ISA expansion
> card from SIIG for LPT 2  which I use for my parallel port Zip drive
> using no IRQ and an IO range of 0278-027A. Everything works great. How is
> it possible for LPT 2 to function properly without an IRQ assigned to it?

Actually, Windows 95 doesn't use an IRQ for normal parallel port operation.
There is only one mode (I forget if it is ECP or EPP) that actually requires an
IRQ.

In many cases, you can use the LPT1 IRQ for another device without any problems.


--
Russ Poffenberger               Engineering Specialist
Schlumberger Technologies ATE   DOMAIN: [log in to unmask]
1601 Technology Drive           CIS:    72401,276
San Jose, Ca. 95110             Voice: (408)437-5254  FAX: (408)437-5246

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