rtd CMV6486DX100HR, User Manual, Page: 65 / 118

65
Hardware Interrupts
The cpuModule supports the standard PC interrupts listed below. Interrupts not in use by hardware
on the cpuModule itself are listed as 'available'.
1
Floppy disk interrupt, INT6, is available for use if no floppy disk is present in the system and flop-
py disk is disabled in Setup.
2
Hard disk interrupt, INT14, is available for use if no hard disk drive is present in the system and
hard disk is disabled in Setup.
If you add any PC/104 modules or other peripherals to the system you
must ensure they do not use interrupts needed by the cpuModule, or
malfunctions will occur
Hardware Interrupts Used on the cpuModule
Interrupt Normal Use Source
0 Timer 0 ACC chipset
1 Keyboard ACC chipset
2 Cascade of IRQ 8-15 ACC chipset
3 COM2 ACC chipset
4 COM1 ACC chipset
5 available XT bus
6
Floppy
1
XT bus
7 Printer ACC chipset
8 Real Time Clock ACC chipset
9 available Mapped to IRQ 2 on XT bus
10 available AT bus
11 available AT bus
12 Not available ACC chipset
14
IDE hard disk
2 AT bus
15 available AT bus