HP D315 Computer Setup (F10) Utility Guide - Page 19

Computer Setup (F10) Utility Guide Computer Setup (Continued) Heading Option Description Advanced* (continued) Power-On Options (continued) *These options should be used by advanced users only. • I/O APIC Mode (enable/disable). Enabling this feature will allow Microsoft Windows Operating Systems to run optimally. This feature must be disabled for certain non-Microsoft Operating Systems to work properly. • ACPI and USB Buffer @ Top of Memory (enable/disable). Enabling this feature places ACPI and USB memory buffers at the top of memory. The advantage is that some amount of memory below 1 MB is freed up for use by option ROMs. The disadvantage is that a popular memory manager, HIMEM.SYS, does not work properly when ACPI and USB buffers are at the top of memory AND the system has 64 MB or less of RAM. Onboard Devices Allows you to set resources for or disable onboard system devices (diskette controller, serial port, or parallel port). PCI Devices • Lists currently installed PCI devices and their IRQ settings. • Allows you to reconfigure IRQ settings for these devices or to disable them entirely. These settings have no effect under an APIC-based operating system. Support for Computer Setup options may vary depending on your specific hardware configuration. Computer Setup (F10) Utility Guide 15