On 30 May 97 10:45pm, Bruce Lane wrote to Andrew Grimsby:
 BL> Andrew Grimsby woke half the neighborhood at 03:12 by yelling
 BL> at All about network problems...
 AG> what exactly are the INT# settings for each pci slot ? the options
 AG> are either A B C or D, or auto, obvioiusly auto isnt working. (what
 AG> are these settings, what do they do?)
 BL>     The INT settings refer to the IRQ channels assigned to the
 BL>     PCI slots (yes, PCI cards do require an IRQ). The letters
 BL>     A=D actually are Hexadecimal digits. In decimal, they would
 BL>     equal out to 10-13 respectively.
Actually, that's not correct.  This was the old PCI IRQ assignment means
and the interrupt assigned to INT A, B, C, or D could be whatever you
defined it as (usually by jumpers on the MLB).  With the older MLBs and
the first PCI cards (typically IDE HD controllers), INT A was typically
assigned an IRQ of 14.  The card, could, however be configured to use any
one of the INTs by changing a jumper on the PCI card (usually not available
now).
Nowadays, newer MLBs either don't have the INT options at all or have
them AND allow you to define either the interrupt associated with a
particular INT option or allow you to define a first, second, third
and forth available interrupt setting which coincides with INT A, B, C,
or D.  Newer boards also have an AUTO setting which in some
implementations works extremely well whereas in others you might find
that you need to set this to MANUAL and specify which interrupts are
being used by ISA/Legacy hardware with exception of industry standards
(such as COM1/COM2 and IDE/IRQ 14/15).
George
... Even the best of friends cannot attend each other's funeral.
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