Acer Aspire 7750Z Acer Aspire 7750, 7750G, 7750Z Notebook Service Guide - Page 52

Legacy Mode System DMA Specification (Continued) DMA6 Not Assigned DMA7 Not Assigned *ExpressCard controller can use DMA 1, 2, or 5. Power Management System Interrupt Specification Hardware IRQ System Function IRQ0 System timer IRQ1 Standard 101-/102-Key or Microsoft® Natural Keyboard IRQ2 Cascaded IRQ3 Intel 82801DB/DBM USB2 Enhanced Host Controller-24CD IRQ4 COM1 IRQ5*  Conexant AC-Link Audio Intel 82801DB/DBM SMBus Controller-24C3 Data Fax  Modem with SmartCP IRQ6 Diskette drive IRQ7* Parallel port IRQ8 System CMOS/real-time clock IRQ9* Microsoft ACPI-compliant system IRQ10*  Intel USB UHCI controller-24C2  Intel 82852/82855 GM/GME Graphic Controller  Realtek RTL8139 Family PCI Fast Ethernet Controller IRQ11  Intel USB EHCI controller-24CD  Intel USB UHCI controller-24C4  Intel USB UHCI controller-24C7  Intel Pro/Wireless 2200BG  TI OHCI 1394 host controller  TI PCI1410 CardBus controller IRQ12 Synaptics PS/2 Port Touchpad IRQ13 Numeric data processor IRQ14 Primary IDE channel IRQ15 Secondary IDE channel *Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none. NOTE: Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none. NOTE: ExpressCards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15. Either the infrared or the serial port may assert IRQ3 or IRQ4. 1-42 Hardware Specifications and Configurations