摘要:
A data processing system with bootcode support for communicating with a noncompliant external device has a motherboard, non-volatile memory connected to the motherboard, a volatile memory, processing resources, a communications port that utilizes a first communications protocol, and one or more buses interconnecting those components. Startup instructions obtained from the non-volatile memory load a device driver for the external device from the non-volatile memory into the volatile memory. However, unlike the communications port, the external device utilizes a second communications protocol. Diagnostic instructions then utilize the device driver to communicate with the external device via the communications port. In an illustrative embodiment, the communications port is a USB port, the external device is a serial terminal, the device driver is a serial terminal driver, and the diagnostic instructions utilize the serial terminal driver to communicate with the serial terminal via the USB port while no operating system is present in the volatile memory.
摘要:
A method and system for booting a user station in a computer network in which a first set of operating system information retrieved from the user station is used to attempt to boot the user station from a remote server. If the boot attempt fails, an iterative process is initiated in which a next set of operating system information is retrieved and used to attempt to boot the user station until a boot attempt is successful. Upon successfully booting the user station, the operating system information is modified to prioritize the set of information that resulted in a successful boot such that the successful set of information is selected first during a subsequent boot attempt. The operating system information may include a directory path of the remote server in which the user station attempts to locate an operating system kernel.
摘要:
A system, apparatus and method for supporting multiple file systems in boot code of a computer. The boot code according to the present invention first identifies file systems used by a boot disk and then identifies operating systems associated with the identified file systems. Based on the identified operating systems, the boot sector for an appropriate operating system is located and loaded. Thereafter, the boot code relinquishes control to the loaded operating system. The boot code is capable of supporting multiple file systems, multiple operating systems located in a plurality of partitions of a boot disk, and multiple operating systems using the same file system.
摘要:
A network computer including a motherboard powered by a power supply via a single power supply plane, a clock generator, a processor, a system memory, and a network interface. The network computer is configured to assume a low power state in response to a low power event and further configured to transition from the low power state to a full power state in response to a wake up event. The wake up event may comprise a LAN wake up in the form of a command issued by a server computer coupled to the network computer via a network. In one embodiment, the network computer lacks a disk based storage device, but includes local permanent storage comprising a compact flash card. Preferably, the network computer's clock generator is configured to produce a clock signal for the processor when the network computer is in the full power mode, and further configured to produce no clock signal in the low power mode. In one embodiment, the network computer further includes at least one peripheral device coupled to the processor via a peripheral bus, such as a PCI bus. In this embodiment, the computer is preferably configured to transition each peripheral device on the peripheral bus to a power management mode when the network computer enters low power mode. The wake up event may be a LAN wake up event in which a wake up signal is received via the network interface, or a “wake on ring” event in which the wake up signal is received via a modem connection to the computer.
摘要:
A network computer (12) receives instructions from a network manager (11), including a control interrupt instruction, a system management instruction, and a release instruction. A processor (16) associated with the network computer (12) executes the control interrupt instruction first to produce a control interrupt signal. This control interrupt signal causes an operating status controller (17) associated with the network computer (12) to disable local operational status control at the network computer. After local operational status control is disabled at the network computer (12), the processor (16) executes the system management instruction and performs a system management operation at the network computer. Finally, after the system management operation is completed, the processor (16) executes the release instruction to produce a release signal. The release signal causes the operational status controller (17) to enable local operational status control at the network computer (12).
摘要:
A method of creating a boot code image in which a computer is configured to fail a boot code creation bypass test. When the bypass test is subsequently executed, an image of a boot code stored in a boot code storage device is copied to a first storage medium. Preferably, the computer is configured to fail the bypass test by inserting at least one jumper in a motherboard of the computer. The boot code creation bypass test is preferably executed in response to a boot event, such as a system power on or reset. In the preferred embodiment, the bypass test comprises a portion of a boot block portion of the boot code. In one embodiment, the boot code is stored to a compact flash card. A flash memory device including a plurality of sectors is used as the boot code storage device. In one embodiment, the boot block and boot code creation bypass test reside in a first sector of the flash memory device while the remaining portions of the boot code including a start up sequence reside in subsequent sectors. The invention further contemplates a boot code storage device configured with instructions for executing a boot code creation bypass test in response to a boot event. If the bypass test fails, the boot code copies an image of a boot code from the boot code storage device to a first storage medium. If the bypass test passes, the boot code executes a start up sequence to bring the computer to a predetermined initial state.
摘要:
A system reset arrangement (12) resides alternately in an enabled condition or a disabled condition. When the system reset arrangement (12) is in the disabled condition, a switching input provided through a switch (11) does not effect a system reset. However, in the enabled condition, the switching input through the switch (11) causes system reset arrangement (12) to produce a reset output which resets the system. A reset disable arrangement (14) maintains the system reset arrangement (12) in the disabled condition in response to a disable input. When the disable input is removed, reset disable arrangement (14) maintains system reset arrangement (12) in the enabled condition. An interrupt output (15) develops an interrupt signal in response to the switching input. This interrupt signal prompts an interrupt controller (16) to issue a desired system management command to be processed by the system processor. This command may place the system in a standby mode and, in any event, removes the disable input, causing the reset disable arrangement (14) to maintain the system reset arrangement (12) in an enabled condition. Thus, activating the switch (11) while the computer is in a normal operational state causes the computer to go into a standby state; and, activating the switch (11) while the computer is in the standby state causes the computer to reset back to the normal operational state.
摘要:
A system, apparatus and method for supporting multiple file systems in boot code of a computer. The boot code according to the present invention first identifies file systems used by a boot disk and then identifies operating systems associated with the identified file systems. Based on the identified operating systems, the boot sector for an appropriate operating system is located and loaded. Thereafter, the boot code relinquishes control to the loaded operating system. The boot code is capable of supporting multiple file systems, multiple operating systems located in a plurality of partitions of a boot disk, and multiple operating systems using the same file system.
摘要:
A method and system for booting a multiple network adapter user station in a computer network are disclosed. The user station includes at least first and second network adapters. Initially, one of the adapters is selected based upon an ordering of the adapters. The user station then determines whether the selected adapter is connectable to the computer network. If the selected adapter is not connectable to the network, an iterative process is initiated in which a next adapter is selected and a determination made as to whether the next adapter is connectable to the network. Upon successfully determining which adapter is connectable to the network, the adapters are re-ordered to prioritize the adapter connectable to the network such that the network connectable adapter is selected first during a subsequent boot attempt. Determining whether the selected adapter is connectable to the computer network may include attempting to boot the user station from a remote server using the selected adapter. The ordering of the adapters may be recorded in and retrieved from a list in a nonvolatile storage device of the user station. The adapter list may be edited by a user to re-order the list of adapters. At least one of the network adapters may comprise an Ethernet adapter while at least one other adapter may comprise a token ring adapter.
摘要:
A compact connector for a data processing system motherboard facilitates the performance of diagnostics on data processing system components. The connector includes first, second, and third terminals in communication with respective first, second, and third lines in the motherboard for serial port interrupts, system data, and keyboard interrupts, respectively. In an illustrative embodiment, the first and second lines comprise lines of an Industry Standard Architecture (ISA) bus, and the compact connector also includes a fourth terminal in communication with a fourth line in the motherboard for real-time-clock interrupts. This embodiment allows the motherboard to receive real-time-clock interrupts via the connector, so that a startup program of the data processing system may boot to an operating system that requires a real-time-clock. That operating system may then be utilized to test the motherboard. In addition, this embodiment allows one or more input devices in communication with the connector to be utilized to interact with the motherboard.