摘要:
According to one embodiment, an information processing apparatus includes a processor including a register file which holds physical registers to which general purpose registers provided by an instruction set architecture are assigned, a virtual register assigning unit which assigns a virtual address in the main memory space to a physical register in the register file based on a request from a program, and records a correspondence between each of the virtual addresses and a corresponding one of the physical registers in a virtual register conversion table, and an access converting unit which determines whether or not a virtual address to be accessed is recorded in the virtual register conversion table managed by the virtual register assigning unit, and executes, when the virtual address is recorded therein, processing of accessing the physical register of which a correspondence to the virtual address is recorded in the virtual register conversion table.
摘要:
An information processing apparatus includes: a processor configured to run an operating system; a reconfiguration module configured to rewrite a capability pointer of a PCI device configuration to set a controller compatible of controlling a non-UART device to be incompatible; a virtualization module configured to virtualize one or more UARTs; and a recognition module configured to cause the operating system to recognize the UARTs virtualized by the virtualization module by altering hardware information.
摘要:
According to one embodiment, an information processing apparatus includes one or more devices, a device control module which performs drive control of the one or more devices, and a nonvolatile memory. Each of the one or more devices includes a command reception module which receives from the device control module a command to cause the nonvolatile memory to store operation setting information, a setting module which performs, when the operation setting information has been stored in the nonvolatile memory at the time of power-on or resetting, operation setting based on the information, and an erasing module which erases the information stored in the nonvolatile memory after the setting means has completed the operation setting. The device control module includes a command issuing module which issues to the one or more devices a command to cause the nonvolatile memory to store operation setting information before power-off or resetting.
摘要:
An LBA correspondence table creating unit creates an LBA correspondence table to convert address information on a floppy disk which is a copy source into address information on an SD memory card, in relation to an FD image area. If an access to the floppy disk to be emulated is requested, an FD access control unit alternately executes access to the SD memory card on the basis of the LBA correspondence table. An FD exchange emulating unit monitors updating and deletion in an FD image SD area by an HD access control unit. If the access is made, the FD exchange emulating unit executes emulation as if the floppy disk was exchanged.
摘要:
An LBA correspondence table creating unit creates an LBA correspondence table to convert address information on a floppy disk which is a copy source into address information on an SD memory card, in relation to an FD image area. If an access to the floppy disk to be emulated is requested, an FD access control unit alternately executes access to the SD memory card on the basis of the LBA correspondence table. An FD exchange emulating unit monitors updating and deletion in an FD image SD area by an HD access control unit. If the access is made, the FD exchange emulating unit executes emulation as if the floppy disk was exchanged.
摘要:
An information processing apparatus includes firmware incorporated in the apparatus; utility software that can be installed and uninstalled; a first restricting unit; and a second restricting unit. The information processing apparatus executes the firmware and the utility software to access a device. The firmware uses the first restricting unit to restrict use of the device on the basis of restriction information, supplies the restriction information to the utility software, and removes the restriction by the first restricting unit if an instruction to remove the restriction is received from the utility software. The utility software determines whether the use of the device has already been restricted by the second restricting unit when the utility software receives the restriction information from the firmware, and instructs the firmware to remove the restriction by the first restricting unit if the use of the device has already been restricted by the second restricting unit.