QUANTA QSSC-S99K 2U User Manual

Contents

QUANTA QSSC-S99K 2U User Manual Manual pdf 60 page image

G2, System Soft OffPower is removed from most of system components, Suspend Well logic in ICH10, SIO.G3, Mechanical offKinds of computer state that system entered and only left mechanical means. It is implied by the entry of this off statethrough a mechanical means that the no electrical current is running through the circuitry and it can be worked on withoutdamaging the hardware or endangering the service personnel. No hardware context is retained. Except for the real time clock,power consumption is zero. No power source is attached to the system (AC or battery). Pushing the Power button will be nofunction in state at all.Resume events are: Power ButtonQuery System Address MapINT 15H, E820H - Query System Address MapThis call can be used in real mode only.This call returns a memory map of the entire installed RAM, and of physical memory ranges reserved by the BIOS. Makingsuccessive calls to this API, each returning one run of physical address information, returns the address map. Each run has atype that dictates how this run of physical address range is to be treated by the operating system.If the information returned from E820 in some way differs from INT-15 88 or INT-15 E801, the information returned fromE820 supersedes the information returned from INT-15 88 or INT-15 E801. This replacement allows the BIOS to return anyinformation that it requires from INT-15 88 or INT-15 E801 for compatibility reasons. For compatibility reasons, if E820returns any AddressRangeACPI or AddressRangeNVS memory ranges below 16Mb, the INT-15 88 and INT-15 E801functions must return the top of memory below the AddressRangeACPI and AddressRangeNVS memory ranges.InputEAX Function Code E820hEBX ContinuationContains the continuation value to get the next run of physical memory. This isthe value returned by a previous call to this routine. If this is the first call, EBXmust contain zero.ES:DI Buffer Pointer Pointer to an Address Range Descriptor structure that the BIOS fills in.ECX Buffer SizeThe length in bytes of the structure passed to the BIOS. The BIOS fills in thenumber of bytes of the structure indicated in the ECX register, maximum, orwhatever amount of the structure the BIOS implements. The minimum size thatmust be supported by both the BIOS and the caller is 20 bytes. Futureimplementations might extend this structure.EDX Signature 'SMAP' – Used by the BIOS to verify the caller is requesting the system mapinformation to be returned in ES:DI.Chapter 3 — BIOS52