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Q: What is the standard IRQ for COM 1?
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What is the standard IRQ setting for the system time?

IRQ 1


What is the IRQ for a keyboard?

IRQ 1 is used exclusively for the keyboard controller.


What is the standard IRQ setting for a math coprocessor?

What is the standard IRQ setting for a math coprocessor?


What type of resources do COM ports require?

IRQ and I/O


A preassigned combination of an IRQ and IO address is called what?

COM and LPT PORTS


What is the standard IRQ setting for primary IDE controller?

14


List interrupts used with the IBM PC type sytems?

IRQ 0 - System timer. IRQ 1 - Keyboard. IRQ 2 - Cascaded signals from IRQs 8-15. IRQ 3 - COM2 (Default) and COM4 (User) serial ports IRQ 4 - COM1 (Default) and COM3 (User) serial ports IRQ 5 - LPT2 Parallel Port 2 or sound card IRQ 6 - Floppy disk controller IRQ 7 - LPT1 Parallel Port 1 or sound card (8-bit Sound Blaster and compatibles) IRQ 8 - Real time clock IRQ 9 - Free / Open interrupt / Available / SCSI. Any devices configured to use IRQ 2 will actually be using IRQ 9. IRQ 10 - Free IRQ 11 - Free IRQ 12 - PS/2 connector Mouse. IRQ 13 - ISA / Math Co-Processor IRQ 14 - Primary IDE. If no Primary IDE this can be changed IRQ 15 - Secondary IDE These are just a set of standard IRQs. For much more detail check our Ralf Brown's list located at http://www.cs.cmu.edu/~ralf/files.html


Which is a correct default combination of COM ports and IRQ?

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


What is a correct default combination of com ports and irq for a typical ibm compatible computer?

COM1 and COM3, IRQ4


What IRQ does COM2 use?

IRQ 3.


What IRQ does LPT1 usually use?

LTP1 should use IRQ7.


What is the IRQ for the floppy disk drive controller?

By default, the IRQ for the floppy disk controller is IRQ 6.