Acrosser AR-B1790 - Manual (Page 35)

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APPENDIX B. INTERRUPT REQUEST (IRQ)
SETTING HARDWARE USING THE SETTING
00 System timer
01 Standard 101/102-Key or Microsoft Natural Keyboard
02 Programmable interrupt controller
03 Serial Port (COM2)
04 Serial Port (COM1)
05 IRQ Holder for PCI Steering
06 Floppy Disk Controller
07 Parallel Port (LPT1)
08 RTC clock
09 ACPI
10 Serial Port (COM4)
11 Serial Port (COM3)
12 PS/2 Compatible Mouse Port
13 Numeric data processor
14 Primary IDE controller
15 Secondary IDE controller
Note: When CF and IDE2 (44pin) simultaneously connect to the Device, the Bios Auto-Detecting time will
become longer (approximately 40 seconds). But when it enters into Operating System, two Devices will
operate normally.