JPH04148262A - Multi-address transfer device - Google Patents

Abstract

PURPOSE:To use even for a general purpose bus protocol such as a VME bus while suppressing the increase of a hardware amount by controlling response signal to a transfer by a slave identifier storage part inside a slave block. CONSTITUTION:In case a master block 9 executes a multi-address transfer, both slave parts 21 and 22 of slave blocks 11 and 12 respond. Since in a slave identifier storage part 51, an identifier outputting a response signal 6 at the multi-address transfer is stored, and in a slave identifier storage part 52, the identifier not outputting the response signal 6 at the multi-address transfer is stored, a response signal control part 41 asserts the response signal 6. When the master block 9 confirms that the response signal 6 is asserted same as the case of a non multi-address transfer even at the multi-address transfer, the master block 9 finishes the transfer. Thus, while suppressing the increase of the hardware amount, it is possible to obtain the device which can be used for the general purpose bus protocol such as the VME bus.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a computer broadcast transfer device in which a plurality of masks proceed with processing while transferring information.

Conventional technology In recent years, in multi-computer technology in which multiple masks transfer information while processing, one mask is the center and all other masks are synchronized. transfer information.

Broadcast transfer devices that simultaneously transfer information from one mask to multiple slaves at high power levels have become an important technology.

An example of a conventional broadcast transfer device will be described below with reference to the drawings. FIG. 3 is a block diagram of a slave of a conventional broadcast transfer device, and FIG. 4 is a block diagram of a conventional broadcast communication system.

As shown in the figure, slave block 1 that performs broadcast transfer
consists of a slave section 2, a transfer control section 33, a response signal control section 43 for non-return transfer, and a response signal control section 44 for circular transfer. In the system, there are multiple slave blocks 13 and 14 that receive and receive circular transfers from the master block 9, and are connected to each other by a transfer bus 7, a response signal 63 for non-broadcast transfer, and a response signal 64 for circular transfer. be done.

The transfer control unit 33 is connected to the transfer path 7 in the system, receives and receives transfer data from the master block 9 via the transfer link 7, and controls the slave unit 2. For pair-to-one transfer, the response signal control unit 4 for non-broadcast transfer uses the control signal 66 for non-broadcast transfer.
3, or in the case of broadcast transfer, using the control signal 66 at the time of broadcast transfer, the response signal control unit 4 at the time of broadcast transfer.
4 controls.

The response signal control unit 43 at the time of non-broadcast transfer is the transfer control unit 33
When receiving an instruction that the transfer is not a broadcast transfer but a one-to-one transfer, a response signal 63 for non-broadcast transfer is asserted. When the master block 9 confirms that the response signal 63 for non-broadcast transfer is asserted, it ends the transfer.

When receiving an instruction from the transfer control unit 33 indicating that the multicast transfer is a multicast transfer, the multicast transfer response signal control unit 44 asserts a multicast transfer response signal 64 . At the same time, a signal collision of the response signal 64 during broadcast transfer is determined.

Let's do it. The multicast transfer response signal control unit 44 continues to assert the multicast transfer response signal 64 while the multicast transfer response signals 64 collide. When all of the plurality of slave blocks 13 and 14 assert the response signal 64 at the time of broadcast transfer, the response signals 64 at the time of broadcast transfer will not collide, and the master block 9 will respond to the response signal 64 at the time of broadcast transfer. Verify that signal 64 is asserted. When the master block 9 confirms the assertion of the response signal 64 during broadcast transfer, it ends the broadcast transfer.

Problems to be Solved by the Invention In such a conventional broadcast transfer device, a response signal 64 for broadcast transfer is required in addition to a response signal 63 for non-broadcast transfer, and a general-purpose bus protocol such as the VME bus is required. There were disadvantages in that it became unusable and required special hardware such as a response signal control unit 44 for broadcast transfer.

The present invention solves the above problems, and aims to provide a broadcast transfer device that can be used with general-purpose path protocols such as VME Vanu while suppressing an increase in the amount of hardware.

Means for Solving the Problems In order to achieve the above object, the present invention includes a transfer control unit, a slave unit that operates as a slave under the control of the transfer control unit, and a method for determining whether or not to assert a response signal when performing broadcast transfer. , and a response signal control section controlled by the transfer control section and the slave identifier storage section.

Effect of the Invention The present invention is arranged so that the response signal to the transfer is controlled by the slave identifier storage section in the slave block according to the above-described configuration, so that the VME bus can be controlled while suppressing an increase in the amount of hardware. It is possible to obtain a broadcast transfer device that can be used with general-purpose path protocols such as .

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2.

As shown in FIG. 1, the slave block 1 includes a slave section 2, a transfer control section 3, a response signal control section 4, and a slave identifier storage section 6. The slave section 2 performs a syslave operation under control from the transfer control section 3. The transfer control unit 3 performs transfer control based on information from the transfer bus 7 within the system. The slave identifier storage unit 6 stores an identifier indicating whether or not to assert the response signal 6 during broadcast transfer. When a plurality of slave blocks 1 exist in the system, an identifier for asserting a response signal 6 at the time of broadcast transfer is stored in the slave identifier storage section 5 in only one slave block in the system. The slave identifier storage unit 5 in the other slave blocks stores an identifier indicating that the response signal 6 is not asserted during broadcast transfer.

The response signal control section 4 asserts the system response signal 6 under the control of the transfer control section 3 to indicate that the response of the slave section 2 is completed.

However, when the transfer control unit 3 receives a broadcast transfer instruction from the transfer bus 7, it checks whether the identifier stored in the slave identifier storage unit 5 is an identifier that will assert the response signal 6 during broadcast transfer. If the identifier stored in the slave identifier storage unit 6 is an identifier that asserts the response signal 6 during broadcast transfer, the transfer control unit 3 controls the response signal control unit 4 to assert the response signal 6. do.

If the identifier stored in the slave identifier storage unit 6 is an identifier that does not assert the response signal 6 during circular transfer, the transfer control unit 3 controls the response signal control unit 4 not to assert the response signal 6. .

The operation will be explained using FIG. In advance, the slave identifier storage section 51 stores an identifier for asserting the response signal 6 during broadcast transfer, and the slave identifier storage section 52 stores an identifier for not asserting the response signal 6 during broadcast transfer.

When master block 9 performs non-broadcast transfer to slave block 11, only one corresponding slave block 11 responds, and response signal control unit 41 asserts response signal 6. When the master block 9 confirms that the response signal 6 is asserted, it ends the transfer. Furthermore, when the master block 9 performs non-broadcast transfer to the slave block 12, only one corresponding 7-leap block 12
responds, and the response signal control section 42 asserts the response signal 6. When the master block 9 confirms that the response signal 6 is asserted, it ends the transfer.

On the other hand, when the master block 9 performs broadcast transfer, both slave units 21 and 22 of the slave block 11 and slave block 12 respond, but the slave identifier storage unit 5
1 stores an identifier that outputs the response signal 6 during broadcast transfer, and the slave identifier storage section 62 stores an identifier that does not output the response signal 6 during broadcast transfer. Assert response signal 6. Even in the case of broadcast transfer, the master block 9 ends the transfer when it confirms that the response signal 6 is asserted, as in the case of non-broadcast transfer.

As described above, according to the broadcast transfer device of the embodiment of the present invention, the slave block 1 is provided with the slave identifier storage section 6. Circular transmission becomes possible without the need for wires.

Effects of the Invention As is clear from the above embodiments, according to the present invention, by providing a slave identifier storage unit so that there is only one slave block that responds during broadcast transfer, a small amount of additional hardware is required. Moreover, it is possible to provide a broadcast transfer device without requiring a special bus control line for broadcast transfer.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a slave block of a broadcast transfer device according to an embodiment of the present invention, FIG. 2 is a block diagram of the same system, and FIG. 3 is a block diagram of a slave block of a conventional broadcast transfer device. FIG. 4 is a block diagram of the system. 2... Slave unit, 3... Transfer control unit, 4... Old response signal control unit, 6... Slave identifier storage unit.

Claims (1)

[Claims] a transfer control section, a slave section that performs slave operation under the control of the transfer control section, a slave identifier storage section that stores whether or not to assert a response signal when performing broadcast transfer, the transfer control section and the slave section; A broadcast transfer device comprising a response signal control section controlled from a slave identifier storage section.