JPS61128335A - Microprogram loading system - Google Patents

Abstract

PURPOSE:To enable other adaptors to store a program in their control memories to attain parallel loading by transmitting data to plural adaptors simultaneously on the basis of cycle still. CONSTITUTION:A main storage device 3 is connected to a supervisory device 4 in a data processor 1 constituting a communication control device through a central control device 2. In addition, channel adaptors 5-1-5-n and circuit scanning mechanisms 6-1-6-m are connected to the device 4 through a scan path 8 and the device 2 is connected to the respective adaptors 5-1-5-n and the mechanisms 6-1-6-m through a system bus 7. The device 4 in the system sets up addresses in the adaptors 5-1-5-n on the basis of scan-in and transfers data between the adaptors 5-1-5-n and the device 3 through the bus 7 on the basis of the cycle still. The data read out from the device 3 are loaded to respective adaptors 5-1-5-n on the basis of the scan-in and set up in their control memories.

Description

[Detailed description of the invention] (A) Industrial application field The present invention is a microprogram load processing method.

Particularly in data processing equipment that has a main memory, a central control unit, a supervisory unit, a system bus, and multiple microprogram-controlled adapters connected to the system bus, program loading based on cycle stealing with a single adapter is possible. - This relates to a microprogram loading processing method for an adapter that allows other adapters to also load the loaded data when the adapter is loaded.

(B) Conventional technology and problems to be solved by the invention Conventional microprogram I1m microprogram loading methods for multiple adapters include scan-in from a monitoring device and command from a central controller. However, both methods have the disadvantage that it takes time to load data to multiple adapters, since it can only be loaded to one adapter at a time. In the latter case, it is necessary to prepare a special instruction for loading the microprogram.

(C) Means to solve the problem The present invention seeks to solve the above points.

By cycle-stealing data to multiple adapters at the same time.

It provides a method for loading microprograms at high speed. Therefore, the microprogram load processing method of the present invention is implemented in a data processing device equipped with a main memory, a central control unit, a monitoring device, a system bus, and a plurality of microprogram control adapters connected to the system bus. means for performing at least a scan-in from the monitoring device; means for the monitoring device to set an address register in the adapter for the adapter by the scan-in; A means for transferring data to and from the memory, a means for the adapter to read data from the main memory by cycle stealing, and a means for other adapters to simultaneously import the data.

The adapter has means for notifying the monitoring device of the completion of loading the microprogram, loads a loader program by scanning into the adapter, and controls multiple adapters by cycle stealing under the control of the loader program. It is characterized by loading microprograms. This will be explained below with reference to the drawings.

(D) Embodiment FIG. 1 shows the configuration of an embodiment of a data processing device to which the present invention is applied, FIG. 2 shows the main part configuration of an embodiment of a channel adapter used in the present invention, and FIG. 3 shows a microprogram. An example time chart illustrating loading aspects is shown.

In FIG. 1, 1 is a communication control device (CC, P).

2 is a central control unit, 3 is a data processing device that constitutes
4 is a main storage device, 4 is a monitoring device, 5-1 to 5-n are channel adapters, 6-1 to 6-m are line scanning mechanisms, 7 is a system bus, and 8 is a scan bus. There is. Further, 9-1 to 9-m each represent a line.

Terminals are connected to each line shown in the figure, but 1. For example, a plurality of these terminals are concentrated in one area, and 2. These terminals communicate with a center/host in a remote location. Such systems are considered. In such a system, it is not desirable in terms of line efficiency to provide individual lines between each terminal and a remote center host.

For this reason, the plurality of terminals that are concentrated in one area are aggregated by a communication control device (CCP) 1 as shown in FIG.
It is being considered that the communication controller 6-1 may be connected to the other party's communication control device (not shown) located on the center/host side of the remote location via a high-speed multiplex line.

Although the present invention is not limited to such a communication control device, as shown in FIG. By scanning in, one channel adapter, for example, 5-1
When the loader program is loaded into the loader program and the channel adapter 5-1 loads the program based on the loader program, the other channel adapters 5-2 to 5-n also receive the program. I try to take it.

FIG. 2 shows the main part configuration of one embodiment of the channel adapter (CA), and the symbols 5, 7, and 8 in FIG. 9 correspond to those in FIG. 1, 10 is the tilN control memory, and 11 is the channel interface. a control unit; 12 is a control 'memory address register; 13 is a microprogram loading mode register (MPLR); 14 is a data register;
15 represents a microprocessor within the channel adapter.

The microprogram loading operation will be described below with reference to the time chart shown in FIG.

(11) The monitoring device 4 scans in the channel adapter (CA) microprogram 2 from a floppy disk (not shown), for example, to the central controller 2.
is loaded into the main storage device 3 via the .

(2) Next, the monitoring device 4 performs a scan-in.

For example, control memory 10- in channel adapter 5-1
1 and the microprocessor 15 in each adapter 5-1 through 5-n.
-1 is reset.

(3) Also, the monitoring device 4 is connected to channel adapters 5-2 to 5-n, which are other adapters.

Address register 12-1 and register 1 shown in FIG.
Desired information is set by scanning in each of 3-i.

(4) Under this state, the monitoring device 4 starts the clock for each adapter 5-1 to 5-n.

(5) At this time, the loader program starts running in the channel adapter 5-1, and the system
A cycle steal request (CRQ) is issued to bus 7 (see FIG. 3).

6) When the central controller 2 detects the cycle steal request, it reads the data from the main memory 3 and sends the data onto the system bus 7 together with a cycle steal end (C3END) signal.

(7) At this time, each adapter 5-1 to 5-n.

When the cycle steal end signal is detected, the data on the system bus 7 is transferred to the data register 14-1.
The contents of the data register 14-1 are stored in the storage location specified by the contents of the address register 12-1 at that time.

(8) The operations of the above processes (5) to 7) are then repeated.

Once all the microprograms have been loaded into the control memory l0-i, the channel adapter 5-1
Notify of this effect.

This means that the microprogram loading for each adapter is completed all at once.

(E) As described in detail, according to the present invention, when one of the adapters loads a program by cycle stealing based on the loader program loaded by scan-in, the other adapter also It becomes possible to store the program in its own control memory. Therefore, so to speak, parallel loading becomes possible and speeding up can be achieved.

[Brief explanation of drawings]

゛Fig. 1 shows the configuration of an embodiment of a data processing device to which the present invention is applied, Fig. 2 shows the main part configuration of an embodiment of a channel adapter used in the invention, and Fig. 3 shows the mode of loading a microprogram. A time chart of one embodiment to be described is shown. In the figure, 1 is a data processing device constituting a communication control device (CCP), 2 is a central control device, 3 is a main storage device, 4 is a monitoring device, 5-1 to 5. -n are channel adapters, 6-1 to 6-m are bibli line scanning mechanisms, 7 is a system bus, 8 is a scan bus, 9 is a line, and 10
11 is a control memory, 11 is a Yarnel interface control unit, 12 is a control memory address register, 13 is a microbe register, J, o-di, g, need 9. It represents Juta.

Claims (1)

[Claims] In a data processing device comprising a main memory, a central control unit, a monitoring device, a system bus, and a plurality of microprogram control adapters connected to the system bus, means for performing at least a scan-in from the monitoring device;
means for the monitoring device to set an address register in the adapter for the adapter by scan-in; means for the adapter to transfer data to and from the main memory by cycle stealing via the system bus; The adapter has means for simultaneously importing data read from the main memory by the adapter by cycle stealing, and means for the adapter to notify the monitoring device of the completion of loading the microprogram, A microprogram loading processing method characterized in that a loader program is loaded, and the microprograms are loaded to a plurality of adapters by cycle stealing under the control of the loader program.