re soundblaster irq and port settings in article shaman wv tek com andrew frip wv tek com andrew klossner wrote these lpt com disk controller are call devices there are devices that requires exclusive interrupt ownership eg disk controller i and keyboard i there are also devices that does not require exclusive ownership ie it will share an interrupt with another device eg lpt no in a standard isa bus the one that almost all non laptop pcs use two separate interface cards cannot share an interrupt this is due to a screwup in the bus design for example if your soundblaster wants to drive interrupt number then it must hold a certain bus wire to or at all times depending on whether or not it wants an interrupt this precludes letting another card assert interrupt number when two or more devices in an isa bus pc share an interrupt it s because they re implemented by a single card interesting would you care to explain to me then how my soundblaster pro card and my printer card are sharing irq successfully i assure you that they are both set to irq and that i have no problem my computer is a dtk ibm clone paul bartholomew pdb ipl jpl nasa gov
