Lynx EPM-4 manual Interrupt Configuration, Components Group

Interrupt Configuration

Interrupt Configuration

Default interrupt settings on the Lynx have been selected to maintain PC/AT compatibility. They can be re-routed to satisfy customer constraints. Use the custom configuration screen in BIOS setup to configure IRQ’s on the Lynx Not all devices can use all IRQ’s. Refer to Figure 8 for a description of allowable IRQ assignments for each device.

Figure 8. Interrupt Circuit Diagram

Components Group:

COM1, COM2, GP Timers, Watchdog,

PCI Interrupts.

COM3, COM4, LPT1

Available on PC/104 (ISA) bus

Default IRQ assignments:

0	Timer 0
1	Keyboard
2	Slave PIC cascade
3	COM2
4	COM1
5	Unused
6	Floppy drive
7	Unused
8	Real-Time Clock
9	Unused
10	Unused
11	PCI Interrupt A,B,C,D
12	PS/2 Mouse
13	Math Co-processor
14	IDE controller
15	Unused

Reference – 38 EPM-4 Reference Manual