HP HDX X18-1009TX HP HDX 18 Entertainment PC - Maintenance and Service Guide - Page 100
System memory map specifications, System interrupt specifications
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System memory map specifications Size 640 KB 128 KB 64 KB 64 KB Memory address 00000000-0009FFFF 000A0000-000BFFFF 000C0000-000CFFFF 000E8000-000FFFFF 00100000- XFFFFFFF (X+1)0000000-FEDFFFFF FED00000-FED003FF FEE01000-FFFFFFFF System function Base memory Video memory Video BIOS System BIOS Extended memory (based on memory installed) PCI bus High precision event timer PCI bus System interrupt specifications Hardware IRQ System function IRQ0 System timer IRQ1 Standard 101-/102-key or Microsoft Natural Keyboard IRQ8 System CMOS/real-time clock IRQ12 Synaptics PS/2 TouchPad IRQ13 Numeric data processor IRQ16 Intel ICH9 Family USB universal host controller 2937 Mobile Intel 4 Series Express Chipset Family IRQ17 High definition audio controller Intel ICH9 Family USB universal host controller 2938 Marvell Yukon 88E8072 PCIE-gigabit Ethernet controller IRQ18 Intel ICH9 Family USB universal host controller 2939 Intel ICH9 Family USB universal host controller 2936 IRQ19 Intel ICH9 Family USB2 enhanced controller 293C IRQ20 Intel ICH9 Family USB2 enhanced controller 293A Intel ICH9 Family USB universal host controller 2934 IRQ21 Intel ICH9M-E/M SATA AHCI controller IRQ22 Intel ICH9 Family USB universal host controller 2935 *Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none. ✎ PC Cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15. Either the infrared or the serial port may assert IRQ3 or IRQ4. ✎ For operating systems after Windows 2000, APIC (Advanced programming interrupt controller) is used. Specifications 6-6