摘要:
A system management module (SMM) for a host server system includes a system management processor (SMP) connected to a system management local bus. The system management local bus connects to the system PCI bus through a system management central (SMC). The SMC includes the main arbitration unit for the PCI bus and also includes the arbiter for the system management local bus. The SMM includes a video controller and/or keyboard and mouse controller connected to the system management local bus to support remote consoling of the SMM. The video controller is further used for transmitting screen images to a remote computer system to facilitate system failure analysis. A plurality of system management remote units are provided for coupling to various components and busses within the host computer system. The system management remote units (SMR's) connect to the SMM via serial bus and permit the SMM to automatically monitor activities and operating conditions, including determining the source of interrupts on busses and detecting error conditions.
摘要:
Through a menu driven selection procedure, a user is given options for how a server should respond to an actuation of a power switch. In one option, the power switch is disabled to prevent accidental shut down of the power supply in response to power switch actuation. In another option, the shut down of the power supply follows soon after the expiration of a count down timer which is triggered by power switch actuation. A subsequent actuation of the power switch in this option aborts the count down. In yet another option, the shut down of the power supply follows soon after the completion of a graceful shut down of the server operating system which is triggered by power switch actuation. A subsequent actuation of the power switch in this option causes an immediate shut down of the power supply.
摘要:
An apparatus is disclosed for predicting and making available in advance certain information, namely the address signals from an expansion bus, so as to relax the timing requirement of the burst transfer cycle. A decoder responds to the control signals of the expansion bus to detect the start and the end of a burst transfer cycle. The decoder controls a counter, which stores the initial address signals of the expansion bus at the start of the burst transfer cycle and predicts the initial address signals by incrementing the address signals during the burst transfer cycle. A multiplexer couples either the predicted address signal to the multiplexer output during the burst transfer cycle or the address signal of the EISA bus to the multiplexer output when the computer system is not performing the EMB burst transfer cycle. In another aspect of the present invention, the low order address signal of the bus is predicted using a second counter. The output of the second counter is merged into the low order address signal of the bus interface devices to properly index the second word of the burst transfer cycle.
摘要:
Apparatus to store data and methods to read memory cells are disclosed. A disclosed example method involves, during a read cycle of a memory cell, applying a current across the memory cell to read a content of the memory cell. During a subsequent read cycle of the memory cell, a subsequent current is applied across the memory cell in the opposite direction to read the content of the memory cell.
摘要:
A memory module (22, 122, 322, 522) including memory devices (24, 324) comprises a memory module buffer (26, 326, 526) having a spare state input (36) and a buffer memory (28). The memory module buffer (26, 326, 526) stores data in the buffer memory (28), the data being re-created from a portion of at least one of the memory devices (24, 324) determined to include an error.
摘要:
A computer system includes a plurality of memory modules that contain semiconductor memory, such as DIMMs. The system includes a host/data controller that utilizes an XOR engine to store data and parity information in a striped fashion on the plurality of memory modules to create a redundant array of industry standard DIMMs (RAID). The host/data controller also interleaves data on a plurality of channels associated with each of the plurality of memory modules. The system implements error interrupt control, ECC error reporting, cartridge error power down procedures in response to command errors, storage of error information in unused segments of each DIMM, hot-pug procedure indicator and remote tagging capabilities of memory cartridges and DIMMs.
摘要:
A computer system includes a plurality of memory modules that contain semiconductor memory, such as DIMMs. The system includes a host/data controller that utilizes an XOR engine to store data and parity information in a striped fashion on the plurality of memory modules to create a redundant array of industry standard DIMMs (RAID). The host/data controller also interleaves data on a plurality of channels associated with each of the plurality of memory modules. The system implements error interrupt control, ECC error reporting, cartridge error power down procedures in response to command errors, storage of error information in unused segments of each DIMM, hot-pug procedure indicator and remote tagging capabilities of memory cartridges and DIMMs.
摘要:
An apparatus is disclosed for predicting and making available in advance certain information, namely the address signals from an expansion bus, so as to relax the timing requirement of the burst transfer cycle. A decoder responds to the control signals of the expansion bus to detect the start and the end of a burst transfer cycle. The decoder controls a counter, which stores the initial address signals of the expansion bus at the start of the burst transfer cycle and predicts the initial address signals by incrementing the address signals during the burst transfer cycle. A multiplexer couples either the predicted address signal to the multiplexer output during the burst transfer cycle or the address signal of the EISA bus to the multiplexer output when the computer system is not performing the EMB burst transfer cycle. In another aspect of the present invention, the low order address signal of the bus is predicted using a second counter. The output of the second counter is merged into the low order address signal of the bus interface devices to properly index the second word of the burst transfer cycle.
摘要:
A computer system, such as a server disposed in an enterprise, accessible from a remote terminal for remote management applications. The computer system includes a remote console functionality assist logic structure for effectuating the sending and receiving-of signals from the remote terminal. The remote console functionality assist logic structure is controlled by a dedicated processor that receives interrupts therefrom in response to a remote management application. The processor can also control one or more peripheral devices provided in the computer system, wherein the controlled peripheral device or devices are disposed up-stream or down-stream from the processor.
摘要:
A computer system with an Intelligent Input/Output architecture having a dynamic device blocking mechanism for hiding at least a portion of peripheral devices. The computer system comprises at least one host processor for executing a host operating system, the host processor disposed on a host bus, an input/output (I/O) bus operably coupled to the host bus via a host-to-bus bridge, and a plurality of peripheral devices operably connected to the I/O bus for transferring data in I/O transactions controlled by an IOP resource. A plurality of I/O bus signals are supplied to the device blocking module for determining which bus master owns the I/O bus in order to initiate a bus cycle. If the bus cycle is about to be commenced on behalf of the host processor and its OS, an enable signal associated with the selected peripheral device is negated until the cycle is completed. If, on the other hand, the bus cycle is initiated by the IOP, the enable signal is asserted for the duration of the transaction, which signal, otherwise, remains in a negated state.