Dell Latitude CPi Service Manual - Page 12

C/Port APR or C/Dock Expansion Station is attached - cd rom

Page 12 highlights

IRQ0 IRQ1 IRQ2 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ8 IRQ9 IRQ10 IRQ11 IRQ12 IRQ13 IRQ14 IRQ15 Generated by the system timer Generated by the keyboard controller to signal that the keyboard output buffer is full Generated internally by the interrupt controller to enable IRQ8 through IRQ15 Available for use by a PC Card unless the built-in serial port or infrared port is configured for COM2 (the default) or COM4 Available for use by a PC Card unless the built-in serial port or infrared port is configured for COM1 (the default) or COM3 Available for use by the audio controller Generated by the diskette drive controller to indicate that the diskette drive requires the attention of the microprocessor Available for use by a PC Card or audio controller if the built-in parallel port is disabled Generated by the system I/O controller's RTC Generated by the video controller Available for use by a PC Card or audio controller unless the C/Port APR or C/Dock Expansion Station is attached Generated by the USB and PC Card controllers; available for use by a PC Card Generated by the keyboard controller to indicate that the output buffer of the integrated touch pad or external PS/2 mouse is full Reserved for use by the internal coprocessor Generated by the hard-disk drive to indicate that it requires the attention of the microprocessor Generated by the CD-ROM drive in the modular bay to indicate that the drive requires the attention of the microprocessor 1-6 Dell Latitude CP and CPi Service Manual

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1-6
Dell Latitude CP and CPi Service Manual
,QWHUUXSW±$VVLJQPHQWV
IRQ0
Generated by the system timer
IRQ1
Generated by the keyboard controller to signal that the keyboard
output buffer is full
IRQ2
Generated internally by the interrupt controller to enable IRQ8
through IRQ15
IRQ3
Available for use by a PC Card unless the built-in serial port or
infrared port is configured for COM2 (the default) or COM4
IRQ4
Available for use by a PC Card unless the built-in serial port or
infrared port is configured for COM1 (the default) or COM3
IRQ5
Available for use by the audio controller
IRQ6
Generated by the diskette drive controller to indicate that the
diskette drive requires the attention of the microprocessor
IRQ7
Available for use by a PC Card or audio controller if the built-in
parallel port is disabled
IRQ8
Generated by the system I/O controller’s RTC
IRQ9
Generated by the video controller
IRQ10
Available for use by a PC Card or audio controller unless the
C/Port APR or C/Dock Expansion Station is attached
IRQ11
Generated by the USB and PC Card controllers; available for use
by a PC Card
IRQ12
Generated by the keyboard controller to indicate that the output
buffer of the integrated touch pad or external PS/2 mouse is full
IRQ13
Reserved for use by the internal coprocessor
IRQ14
Generated by the hard-disk drive to indicate that it requires the
attention of the microprocessor
IRQ15
Generated by the CD-ROM drive in the modular bay to indicate
that the drive requires the attention of the microprocessor