JPS6249447A - Scan in/out control system - Google Patents

Abstract

PURPOSE:To exchange various data between a scan ring and a service processor by dividing the scan ring into an attribute section and a data section. CONSTITUTION:A decoder 13 in the main body of equipment 2A decodes the content sent from a service processor 1 side and transmits to a microprogram 10. The microprogram 10 takes out desired function code from a data section 12, and sets a flag of process corresponding to the function, and then changes the content of an area corresponding to an attribute section 11, and sets data in a specified area designated by desired function code to a data section 12. Then, signals on an RESPOND signal line 14 is made active, and the service processor 1 is informed of completion of processing of desired function code. The service processor 1 takes in desired data by scan out operation responding to the fact that signals on the RESPOND signal line 14 are made active.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a scan-in/out control method for a data processing device consisting of a main unit and a service processor, and particularly relates to a scan-in/out control method for a data processing device consisting of a main unit and a service processor. The following relates to a scan-in/out control method that allows data to be exchanged between a scan ring in a main unit and a service processor.

[Conventional technology]

FIG. 3 is a schematic configuration diagram of a conventional scan-in/out control system. In FIG. 5, (1) is a service processor (SVP), which includes a scan buffer (3) and a shift register. (Includes.)
, 2) is the main unit, and the scan ring (ar) included in this main unit has an appropriate number of shift register latches (S
RL) (?). Cs> is a control signal line that connects the service processor (1) to the main unit (
2) Various control signals are sent to control the scanning ring. (6) is an input line to the scan ring (, r), which connects the output terminal of the shift register (ri) in the service processor (1) and the input terminal of the scan IJ y ring (r); Reference numeral 7) is an output line from the scan ring (g), which connects the input terminal to the shift register in the service processor (1) and the output terminal of the scan ring (5).

Next, the operation will be explained. Service processor (1)
However, when attempting to retrieve required data from the scan ring within the main device (2), the following operations are performed. First, the system clock supplied to the shift register latches (q) forming the scan ring (su) must be completely stopped. The reason is that while the service processor (1) is fetching the necessary data from the scan ring (y), one of the shift register latches (9) in the scan ring (y)
This is to prevent undesired data from being set. The service processor (1) uses a predetermined ring address selection signal in the control signal line (3) to select a shift register latch (q
). Then, the data stored in the scan ring (2) is sequentially shifted by the shift clock signal in the control signal line (r) and sent to the service processor (1) via the output line (7). Shift register (
Hiromu).

This shift register ('I) may have a length of g bits, for example, and in this case, when g shift clock signals are output, the shift register (4') is filled with data from the scan ring. At this time, the contents of the shift register (RI) are transferred to the scan buffer (3). Scanring (
By returning the scan ring (r) as many times as necessary to cover the data length stored in the scan ring (r), the contents of the scan ring (r) are transferred to the scan buffer (3). In addition, if the number of stages of the scan ring O) is not an integral multiple of the number of stages of the shift register (Hiro), the shift register (Hiro)
The final data transferred to the scan buffer (3) includes so-called dummy data.

[Problem that the invention seeks to solve]

Since the conventional scan-in/out control method is configured as described above, the service processor can read the necessary data from the scan ring in the main unit only when the system clock for the main unit is used. There was a problem in that the scan ring was in a stopped state and the data that could be read was limited to cases where it was stored in the scan ring.

This invention was made in order to solve the above-mentioned problems.The scan ring in the main unit is divided into an attribute section and a data section, and the scan ring is divided into an attribute section and a data section. The object of the present invention is to obtain a scan-in/out control system capable of exchanging various data between the scan ring and the service processor under the control of a microprogram in the main unit. .

[Means for solving problems]

A scan-in/out control method according to the present invention is a scan-in/out control method for a data processing device including a main unit equipped with a scan ring and a microprogram, and a service processor that monitors the main unit, The ring is divided into an attribute section and a data section.

[Effect]

According to this invention, under the control of the microprogram, data exchange is performed between the scanning ring and the service processor depending on the result of decoding the function code in the attribute section.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a schematic configuration diagram of the above embodiment, the second figure is an explanatory diagram of the scan ring part of the above embodiment, and the third figure is an illustration of data extraction from the Mytaro program in the main unit in the above embodiment. FIG. 9 is an explanatory diagram of data storage from the service processor to the main unit in the above embodiment. In Figure 1 of these drawings, (1) and (3) to (Te) are the same as those with the same symbols in the conventional example in Figure 5, or indicate the priest parts. . (2A) is a main unit, which includes a microprogram (10). (//) is an attribute section in the scan ring, and is coupled to the microprogram (10) via the decoder (/3).

(/, 2) is the data section in the scanning ring (g), which is directly connected to the microprogram (10). Also, (/q) is the RB8POND signal line, which is controlled by the data section (10) by the microprogram (10).
When the processing of the contents of /=) is completed, a signal is output from the microprogram (/θ) to notify the service processor (1) of this fact.

Next, the operation will be explained.

First, the service processor (1) is the main unit (XA)
The manner in which required data is read from the microprogram (/θ) inside will be explained with reference to FIG. 3 as well as FIG. 1. Normally, in a state where no questions or answers have been made, the content of the attribute part (//) of scan ring (A) is set to '00', and therefore, this A) is related to the IJ butte part (//). The decoder (/, ?) is a no-operation (NOop”)
Decoding the state.

The beginning of the question-and-answer session is completed by following several steps.

(a) Step: Service processor (1) c. Set the hexadecimal number "ot" (function in) in the area corresponding to the attribute part (//) in the scan buffer (3), and also set the data part ( /2), and then set the function code (in the example in Figure 3, the read data function)
to give advice to someone).

(b) Step: Decoder (/3) of main unit (2A)
decodes the content sent from the service processor (1) and transmits the result to the microprogram (10). The microprogram (10) extracts the desired function code from the data section (/), sets a flag for the process corresponding to the function, and then changes the contents of the area corresponding to the attribute section (//). (
In the example shown in FIG. 3, /A base number) OO'' (no operation) is set), and data in a predetermined area specified by the desired function code is set in the data section (/).

(c) Step: After that, the RESPOND signal line (/4
t) Activate the above signal to inform the service processor (1) that processing of said desired function code is finished.

(d) Step: The service processor (1)
In response to the signal on the ESPOND signal line (C) becoming active, desired data is taken in by a scan-out operation.

Second, a deaf person who transmits data in the service processor (1) to the main unit (-A) side will be explained with reference to FIGS. 1 and 9.

(A) Step: A required function code is sent from the service processor (1) to the main unit (core A) in the same manner as in step (a).

(B) Step 2 After receiving the function code, the main device (2 people) reads the attribute section (//
) is changed to 76-decimal notation °"10".

(C) Step: The signal on the RESPOND signal line (C) becomes active.

(D) Step: The service processor (1)
In response to the signal on the ESPOND signal line (c0 becoming active, the contents of the area corresponding to the attribute section (//) are set to "01" in hexadecimal number, and the data section (/co) After setting the data to be stored in the area corresponding to , the scan-in operation begins.

(E) Step 2 When the intended data processing in the data section (/2) is completed, the microprogram (10) of the main unit (XA) sets the contents of the attribute section (//) to Oθ'' and then returns the RESPOND. Activate the signal on the signal line (/q).

By sequentially performing the two types of operations described above, necessary data is exchanged between the service processor (1) and the main body 'fARc A).

Note that in the above embodiment, the service processor (1
) and the main unit (CoA) were explained about the case where data is exchanged only seven times, but by increasing the number of function codes and data types to be set in the attribute section, it is possible to exchange data continuously. You can send it.

In addition, the other party to the service processor (1)'s questions and answers is the microprogram (10) in the main unit (2A).
However, the present invention is not limited to this, and a similar function may be provided by combining appropriate hardware and sequence means. Furthermore, in the above embodiment, the scan buffer (3) and shift register (phantom is the service processor (
1), these means are not limited to this, but are provided on the main unit (2 people) (1
It may be set to 0.

〔Effect of the invention〕

As explained above, scan-in/
The out control method is a scan-in/out control method for a data processing device that includes a main unit equipped with a scan ring and a microprogram, and a service processor that monitors the main unit, and the scan ring has an attribute section and a data section. Since it is divided into
Under the control of the microprogram, it is possible to exchange data between the scan ring and the service processor depending on the result of decoding the function code in the attribute section. The data supplied to the service processor through scanning is diversified, and an additional dedicated bus is not required.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a scan-in/out control system according to an embodiment of the present invention, FIG. 1 is an illustrative diagram of the configuration of the scan ring section of the above embodiment, and FIG. Fig. 5 is an explanatory diagram of data retrieval from the device, Fig. 5 is an explanatory diagram of data storage in the main unit in the above embodiment, and Fig. 5 is a schematic configuration diagram of a conventional system. (1) is a service processor, (ko), (2 people) are main unit, (,?) are scan buffers, (ri is a shift register, (S) is a control signal line, (g) is a scan ring, (9) ) is a shift register latch, (10) is a microprogram, (//) is an attribute section, (/2
) is the data part, (/3) is the decoder, (/g) is the RF:
5POND signal line. In each figure, the same reference numerals indicate the same or corresponding parts. Figure 3 Foil Figure 4

Claims (2)

[Claims] (1) A scan-in/out control method for a data processing device including a main unit equipped with a scan ring and a microprogram, and a service processor that monitors the main unit, wherein the scan ring has an attribute section and a data section. Under the control of the microprogram, data can be exchanged between the data section and the service processor depending on the result of decoding the function code in the attribute section. Scan-in/out control method. (2) The scan-in/out control method according to claim 1, wherein the microprogram has a function of notifying the service processor of the end of data exchange between the data section and the service processor. .