HP Dc5000 HP Compaq Business Desktop dc5000 Series Service Reference Guide 2nd - Page 20
ACPI/USB Buffers @ Top of Memory enable/disable. - ram
UPC - 829160313740
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Setup Utilities and Diagnostics Features Heading Advanced** (continued) Option Power-On Options (continued) Description Allows you to set: (continued) POST Delay (in seconds) (enable/disable). Enabling this feature will add a user-specified delay to the POST process. This delay is sometimes needed for hard disks on some PCI cards that spin up very slowly; so slowly that they are not ready to boot by the time POST is finished. The POST delay also gives you more time to select F10 to enter Computer (F10) Setup. I/O APIC Mode (enable/disable). Enabling this feature will allow Microsoft Windows Operating system to run optimally. This feature must be disabled for certain non-Microsoft Operating Systems to work properly. ACPI/USB Buffers @ Top of Memory (enable/disable). Enabling this feature places USB memory buffers at the top of memory. The advantage of remapping is that it allows space in the DOS Compatibility Hole range, below 1MB, to be made available for additional PCI plug-in cards that need option ROM space. The disadvantage is that a popular memory manager, HIMEM.SYS, does not work properly when USB buffers are at top of memory AND the system has 64 KB or less of RAM. Hot-Pluggable MultiBay Floppy* (enable/disable). Enabling this feature allows you to hot-plug a MultiBay floppy into a system running Windows 2000 or XP. BIOS Wakeup* Allows you to set the computer to turn on automatically at a time you specify. Onboard Devices Allows you to set resources for or disable onboard system devices (serial port, parallel port, or diskette controller). 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. Bus Options* Allows you to enable or disable: PCI bus mastering, which allows a PCI device to take control of the PCI bus. PCI VGA palette snooping, which sets the VGA palette snooping bit in PCI configuration space; only needed when more than one graphics controller is installed. PCI SERR# generation. ECC support allows hardware-based error correction for ECC-capable memories. *Available on select models. **These options should be used by advanced users only. 2-10 360201-002 Service Reference Guide, dc5000