What is the standard IRQ setting for a math coprocessor?
This interrupt is the first choice that most sound cards make when looking for an IRQ setting.
The standard form of 1 millionths is: 1.0 × 10-6The standard notation is: 0.000001
The standard deviation in a standard normal distribution is 1.
The standard deviation in a standard normal distribution is 1.
IRQ 1
IRQ 1 is used exclusively for the keyboard controller.
What is the standard IRQ setting for a math coprocessor?
IRQ and I/O
COM and LPT PORTS
14
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
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
COM1 and COM3, IRQ4
IRQ 3.
LTP1 should use IRQ7.
By default, the IRQ for the floppy disk controller is IRQ 6.