摘要:
Buffers are provided in two elements between which data is to be transferred wherein both buffers are managed solely by the originator of the data transfer. Only one transfer is required to transmit a message, and a second transfer acknowledges the completion of the function because message delivery to the receiver is guaranteed under the implemented protocol. When a request is sent, a message timer is started at the sender. When the normal response for the request is received, the timer is reset; however, if the duration of the message operation exceeds the timeout value, a message-timeout procedure is initiated. When the cancel command is issued, a second timer is set. If this timer is exceeded, subsequent cancel commands can be issued. If subsequent cancel commands are issued, a cancel complete command must be sent and responded to. Since the commands must be executed in the sequence in which they are received, a response to the cancel complete command ensures that there are no other cancel operation commands remaining in the receiver, allowing subsequent operations to start without danger of being canceled.
摘要:
A system and method for asynchronously transmitting data blocks, in parallel, across multiple fibers in a serial manner. Frame groups are provided as a mechanism to transmit associated data serially on each fiber and tie the data being transmitted together. The frame groups do not have sequence numbers, therefore, the receiver determines which frames are part of a frame group by the arrival times of the individual frames. In one embodiment, the transceivers for each member of the parallel bus asynchronously achieve synchronism at each end of the fiber. Thus the need for a common clock is eliminated. The receivers on each side of the bus determine the relative skew for each conductor by performing skew measurements on a calibration message generated by the transmitters on the other side of the bus. When the skew on all conductors, viewed from both sides of the bus, has been determined, the skew values are exchanged across the bus, thus enabling the transmitters to set proper frame spacing.
摘要:
A system and method for asynchronously transmitting data blocks, in parallel, across multiple fibers in a serial manner. Frame groups are provided as a mechanism to transmit associated data serially on each fiber and tie the data being transmitted together. The frame groups do not have sequence numbers, therefore, the receiver determines which frames are part of a frame group by the arrival times of the individual frames. The transceivers for each member of the parallel bus asynchronously achieve synchronism from either end of the fiber. Thus the need for a common clock is eliminated. The receivers on each side of the bus determine the relative skew for each conductor by performing skew measurements on a calibration message generated by the transmitters on the other side of the bus. When the skew on all conductors, viewed from both sides of the bus, has been determined, the skew values are exchanged across the bus, thus enabling the transmitters to set proper frame spacing.
摘要:
A throw toy includes a pair of soft, spongy weights separated by a flat flexible and stretchy web. Upper and lower hour-glass shaped layers are fastened around their periphery around the pair of spaced apart weights to form the web and enclose the weights to complete the throw toy. A sickle-shaped throwing member can be used with the throw toy.
摘要:
A connection recovery apparatus for placing a dynamic connection of a dynamic switch of a computer I/O system in a known state upon the detection of a possible switching error. The I/O system includes transmitting stations each having a link-level facility attached by a link to a dynamic-switch port of a dynamic-switch. The dynamic-switch makes dynamic connections between any two of the stations. Upon the detection of a possible switching error, the detecting link-level facility of a station or its attached dynamic-switch port starts a switch recovery procedure which places any dynamic connection to that station in a known disconnected state.
摘要:
Various exemplary embodiments relate to a brace for use with an integrated circuit (IC), and to an IC package with a brace, having a main body portion and a fastening portion for mechanically fastening the main body portion to the IC, by for example clipping or sliding attachment. Other exemplary embodiments relate to a method of stabilizing an IC during an operation carried out on the IC, such as a soldering operation, involving for example steps of attaching a brace to the IC, performing the operation on the IC, and/or removing the brace after performing the operation.
摘要:
Various exemplary embodiments relate to a brace for use with an integrated circuit (IC), and to an IC package with a brace, having a main body portion and a fastening portion for mechanically fastening the main body portion to the IC, by for example clipping or sliding attachment. Other exemplary embodiments relate to a method of stabilizing an IC during an operation carried out on the IC, such as a soldering operation, involving for example steps of attaching a brace to the IC, performing the operation on the IC, and/or removing the brace after performing the operation.
摘要:
A dynamic switch and its protocol for establishing dynamic connections in a link by the use of frames, each frame having an identification of the source of the frame, an identification of the destination of the frame for the requested connection, and link controls to maintain, initiate or terminate a connection between the source and the destination. The frames are bounded by a start of frame delimiter and an end of frame delimiter which may also act as a connect link control and a disconnect link control, respectively, and the connections are made through the dynamic switch having dynamic-switch ports. The state of a dynamic-switch port is changed dependent on its present state, the dynamic connection requested, and the direction and type of frames passing through the dynamic-switch port.
摘要:
Program instruction TPI (Test Pending Interruption) and associated data processor sequence controls for its execution enable interruption handling programs to operate in a shortened recursive mode relative to interruptions pending while such programs are in control of a data processor system. Execution of a TPI instruction sets a condition code distinguishing between pendency and non-pendency of a request for interruption in one associated class of interruptions. If an interruption request in that class is pending, the instruction execution controls clear (terminate) it. If more than one request is pending, a selected one is cleared. The selection is based on a predetermined priority ordering. Interruption code information is stored by the execution controls, indicating the source of the cleared request. The interruption handling program branches on the condition code and the interruption code information, to attend to the interruption task associated with the cleared request. Since that program is in control of the system when the TPI instruction is executed, the branch sequence may omit status saving operations and other operations associated with the handling of interruptions.
摘要:
Various exemplary embodiments relate to a stiffener for use with and integrated circuit (IC). The stiffener can be attached to the IC, and can utilize a planar portion and one or more beam portions that project from the planar portion at a non-zero angle. The stiffener can alternatively include a frame formed of beam portions that are adjacent the sides of the IC. The stiffener can provide added stiffness to the IC package to resist warping of the IC during soldering.