COM and LPT PORTS
From: http://www.techadvice.com/tech/C/ComPort_TS.htmCom1, IRQ 4, address: 3F8Com2, IRQ 3, address: 2F8Com3, IRQ 4, address: 3E8Com4, IRQ 3, address: 2E8
9 and 11 9 and 11 Try IRQ9 and IRQ10. IRQ 9, 10, and 11 have no default assignment (Chap 6 Network+ Guide to Networks)Read more: Which_two_irq's_can_you_assign_to_a_NIC_without_causing_a_conflict_with_preassigned_devices
To avoid conflicts with preassigned devices, you could typically assign IRQs 10 and 11 to a Network Interface Card (NIC). These IRQs are often available for use in modern systems, as many standard devices are assigned IRQs 1 through 9 or 12 through 15. However, it's always best to check the specific hardware configuration and the system's IRQ routing table to ensure there are no conflicts.
5
IRQ,DMA channels,I/O address and memory address
LTP1 should use IRQ7.
IRQ I/O address performance level
By default, the IRQ for the floppy disk controller is IRQ 6.
By default IRQ 7 is assigned to LPT1.
IRQ 1 is used exclusively for the keyboard controller.
IRQ 1
Hi, correct combination of default combination of COM ports and IRQ is given below: 1. com1 and com3 - IRQ4 2. com2 and com4 - IRQ3 below link can easily explain the answer in details. You can even see this in device manager properties. i.e. mycomputer > properties > device manager> IDE/ATA controller > resources > irq=20 link : http://www.webopedia.com/quick_ref/IRQnumbers.asp