HP Workstation x2000 hp workstation x2000 - Technical Reference and Troublesho - Page 75

System Board Assigned Device Interrupts numbered sequentially, starting with the master controller, and followed by the slave (both of 82C59 type). Although you can use the Setup program to change some of the settings, the following address map isn't completely BIOS dependent but is determined partly by the operating system. Note that some of the interrupts are allocated dynamically. Interrupt Source APIC Controller Interrupt Signalling on of device INTA - PCI slot 3 (32/33) INTB - PCI slot 3 (32/33) INTC - PCI slot 3 (32/33) INTD - PCI slot 3 (32/33) INTA - PCI slot 4 (32/33) INTB - PCI slot 4 (32/33) INTC - PCI slot 4 (32/33) INTD - PCI slot 4 (32/33) INTA - onboard SCSI controller AGP - INTA, PCI Slot 1 - INTC, PCI Slot 2 - INTA, PCI Slot 5 - INTB PCI Audio - INTA, AGP - INTB, PCI Slot 1 - INTD, PCI Slot 2 - INTB, PCI Slot 5 - INTC BT_INT, PCI Slot 1 - INTA, PCI Slot 2 - INTC, PCI Slot 5 - INTD USB - INTA, PCI Slot 1 - INTB, PCI Slot 2 - INTD, PCI Slot 5 - INTA Device on Primary IDE Channel Device on Secondary IDE Channel Serial Interrupt from Super I/O P64H P64H P64H P64H P64H P64H P64H P64H P64H ICH2 ICH2 ICH2 ICH2 ICH2 ICH2 ICH2 Input IRQ0 IRQ1 IRQ2 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ8 INTA INTB (PIC mode)a BT_INT BT_INT BT_INT BT_INT BT_INT BT_INT BT_INT BT_INT BT_INT INT INT INTC INT INTD INT IRQ14 INT IRQ15 INT SERIRQ INT (APIC modes) APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus APIC bus a. In PIC mode, the interrupts signaled to the P64H are chained as INTC to the ICH2. Three major interrupt modes are available: • PIC mode: This mode uses only legacy interrupt controllers, so only one processor can be supported. Because this system has Chapter 2 75