EP812 Pentium
®
M All-in-One Capa Board User’s Manual
Hardware Description
27
3.5 Interrupt
Controller
The
EP812 Series
is a 100% PC compatible control board. It
consists of 16 interrupt request lines. Four out of the sixteen
can either be programmable. The mapping list of the 16
interrupt request lines is shown on the following table.
NMI
Parity check error
IRQ0
System timer output
IRQ1
Keyboard
IRQ2
Interrupt rerouting from IRQ8 through IRQ15
IRQ3
Serial port #2
IRQ4
Serial port #1
IRQ5
Reserved
IRQ6
Floppy disk controller
IRQ7
Parallel port #1
IRQ8
Real time clock
IRQ9
Reserved
IRQ10
IRQ11
IRQ12
PS/2 Mouse
IRQ13
Math coprocessor
IRQ14
Primary IDE channel
IRQ15
Secondary IDE Channel
Summary of Contents for EP812
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