AndreBranco
09-02-1999, 05:13 AM
how many irqs does a computer have?? is it only 16? and can a device like a modem and a graphics adapter share the same irq?
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Carl Uman
09-02-1999, 09:13 AM
Yes 16 (0-15)
It kind of depends on the operating system. Back in the DOS days the SoundBlaster cards often shared IRQ 7 with LPT1. With Win9X being a multitasking system then no they cannot share IRQs. This is in my opinion one of the bigger issues with today's PCs. Any new external hardware that I buy now will be USB, except the printer so that I can use it in OSs besides Win9X. The reason for USB is that you can connect multiple devices without needing more IRQs.
Carl
It kind of depends on the operating system. Back in the DOS days the SoundBlaster cards often shared IRQ 7 with LPT1. With Win9X being a multitasking system then no they cannot share IRQs. This is in my opinion one of the bigger issues with today's PCs. Any new external hardware that I buy now will be USB, except the printer so that I can use it in OSs besides Win9X. The reason for USB is that you can connect multiple devices without needing more IRQs.
Carl
Yoda
09-03-1999, 02:51 AM
Some PCI-devices can share IRQs.
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