JPS60134943A - Scan-out system - Google Patents

Abstract

PURPOSE:To improve the throughout of a program by providing a data control register in accordance with a data register and suppressing and setting an optional byte of th data control register to ''0'' by a program of a service processor. CONSTITUTION:First, the service processor (SVP) program sets 0 suppression of an optional byte to a data control register 32, and hereafter, indicated bytes of all data are suppressed to 0. Consequently, a complicated program which indicates comparison after 0 clear due to the progam processing of the SVP is unnecessary even if bytes which do not exist on hardware are undefined data or data is other than ''0'' fixedly. When a large quantity of data in a memory or the like having the same data format is processed, the number of dynamic steps of the program is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a data scan-out method for a service processor adapter that controls an interface between a service processor and other devices.

(bl Background of the Technology) Conventionally, a service processor functions as a system console, system monitoring function, maintenance panel, etc., and in particular, executes diagnostic programs for other devices such as the central processing unit and channel control unit, and performs maintenance. It is an independent computer subsystem that provides support, etc., and can significantly improve the operability and maintainability of computer systems.Therefore, in general-purpose computer systems, it is necessary to diagnose the functions of each hardware before system operation. It has a function that allows the service processor to execute the program.

When this service processor diagnoses and supports the functions of other devices, it uses a service processor adapter that controls the interface between the other device and the service processor, reads data from registers or memory in the other device, and uses the service processor adapter to control the interface between the other device and the service processor. After the data is once read into the data register holding the data, an operation is performed to read it to the service processor. At this time, a comparison is made between the data read by the service processor and the data written by the service processor to a memory or register in another device to improve reliability.

(C1 Prior Art and Problems) Conventionally, a service processor (hereinafter referred to as SvP) reads out the contents of a register or memory in another device (hereinafter referred to as scan-out).

The program in the SVP performs five scan-out operations by writing to the register in the SvP adbook that controls the interface between the SvP and other devices in the manner shown in FIG.

FIG. 1 shows a block diagram of a conventional scan-out circuit. 1 is another device (for example, a central processing unit), and 11 is a register or memory (4-byte configuration) in the other device 1 to be scanned out. 2 is Sv
P adapter, 21 is a 1-byte wide data bus, 2
2 is a data register.

It consists of 4 bytes (OR-0-/DR-3).

23 is a scan address register, and 24 is a scan command register. The scan-out operation order according to the conventional method will be explained below.

(The program in SVP 11 writes the address of the register or memory whose contents are to be read into the scan address register 23.

(The program in SVP 21 sends a scan-out instruction to the scan command register 24.

(31SVP adapter 2 is scan command register 2
When scan out is instructed in step 4, first.

The data contents corresponding to the register in the other device corresponding to the address in the scan address register 23 or byte O of the memory 11 are read, and the data is set in RD-0 of the data register 22 via the data bus 21. Similarly, byte 1 of the primary register or memory 11. Part-time job 2. The data contents corresponding to byte 3 are read out and the data are sequentially set in RD-1, RD-2 and RD-3 of the data register 22.

+41 The program in SVP is data register 22
Data contents sent to (RD-0, RD4. RD
-2°RD-3), the data contents of the register or memory 11 in the other device are recognized.

With the above, one scan-out operation is completed. This scan-out operation is repeated as many times as necessary.

In this conventional scan-out operation method, the scan-out data format of the register or memory corresponding to the scan address is such that there is a byte in which the data is undefined in one word, or.

Even if there are bytes whose data is a fixed pattern other than "0", the program in svp writes data to all bytes in the word for the register or memory whose contents are to be read. Then read out its contents.

In order to compare with the written data, the svp program needs to perform the comparison after clearing the read data to "0" for the data that becomes undefined, which makes the process complicated and increases the number of dynamic steps of the program. However, it had the disadvantage of reduced processing capacity.

(dl OBJECT OF THE INVENTION The present invention aims to solve this conventional drawback of reduced processing power.

(81) Configuration of the Invention The above object is to provide a service processor adapter that controls an interface between a service processor and another device, wherein the data register is connected to a data register that holds read data from the other device to the service processor. The present invention has a data control register for controlling read data in byte units, and is configured to suppress the contents of the data register in byte units or notify the service processor as is, depending on the state of the data control register. Ru.

That is, in the service processor adapter that controls the interface between the service processor and other devices, a data control register is provided corresponding to the data register, and any byte of the data control register is set to "0" by the service processor program. Depending on the state, the specified hide for all data will be "0"
”, so if a byte that does not exist on the hardware becomes undefined data, or if the data is fixed.
Even if there are bytes with a pattern other than 0'', the program processing is simplified.

The number of dynamic steps in the program is reduced.

This provides a scan-out method that improves processing power.

(fl Embodiment of the Invention An embodiment of the present invention will be described below. FIG. 2 shows a block diagram of the configuration of a scan-out circuit according to the method of the present invention, and the same objects are indicated by the same symbols as in FIG. 1. 31 service processor adapter.

32 is a data control register, and 33 is an AND gate circuit. The service processor adapter 31 is an adapter that controls the interface between the service processor and other devices, and the data control register 32 is sent by the program in the svp. AND gate circuit 33 is data register 22 (7) RD-0---1? [This is a gate circuit that ANDs l-3.

The scan-out operation according to the method of the present invention will be explained below. In FIG. 2, for example, the case where byte 0 of the data register 22 is suppressed to 0'' will be explained.SvP
The program sets the registers in the service processor adapter 31 as follows and performs a scan-out operation.

(1)' svp program uses data control register 3
Set "0111" to 2.

(The SVP program 21 sets the address of the register or memory 1 of the other device 1 to be read in the scan address register 23.

(The 31SVP program sends a scan-out instruction to the scan command register 24.

f41 -'J-His processor adapter 31, when scan out is instructed by scan command register 24, first corresponds to byte o of register or memory 11 in other device 1 corresponding to the address in scan address register 23. The contents are read out and sent to RD-0 of the data register 22 via the data bus 21. Similarly, byte 1 of register or memory 11 in other device 1. Part-time job 2. Read the content corresponding to byte 3,
l1D-1, R11-2, RD- of data register 22
3 cents.

(5) When the SVP program reads the contents of the data register 22, byte O is suppressed to R0'' because the AND gate circuit 33 does not open, and byte 1, byte 2, and byte 3 are ANDed by the AND gate circuit 33. is,
The contents of the data register 22 are read out as is.

The svp program described above is an example of suppressing byte l-0 to R0. Since the byte specified for svp is suppressed to 0'', even in cases where a byte that does not exist on the hardware is undefined data or data is fixedly non-zero, svp
A complicated program that specifies that the comparison should be performed after the program processing is cleared to "0" is no longer necessary, and the program is simplified, especially when processing a large amount of data such as memory with the same data format. The number has decreased, and the processing power has improved significantly. 2. Although the scan-out method of the present invention is carried out in such a manner that the data control register corresponds to the byte of the data register, it is of course possible to use the scan-out method to correspond to the bit.

(Examination) As described in detail, the present invention provides a service processor adapter that controls an interface between a service processor and other devices, by providing a data control register corresponding to a data register. By suppressing and setting an arbitrary byte of the data control register to R0'' by the program, the byte specified for all data is suppressed to o'' from now on, which simplifies the program processing of the +-bis processor. This has the remarkable effect of reducing the number of dynamic steps in the program and improving processing power.

[Brief explanation of the drawing]

FIG. 1 shows a configuration block diagram of a scan-out circuit according to a conventional method, and FIG. 2 shows a configuration block diagram of a scan-out circuit according to a method of the present invention. In the drawings, 1 is another device, 11 is a register or memory of the other device, 21 is a data bus, 22 is a data register,
23 is a scan address register, 24 is a scan command register, 31 is a service processor adapter, 3
2 represents a data control register, and 33 represents an AND gate circuit. Tei 1 Zukem 2 Kou

Claims (1)

[Claims] A service processor adapter that controls an interface between a service processor and another device, and controls read data in byte units of the data register in correspondence with a data register that holds read data from the other device to the service processor. 1. A scan-out method comprising a data control register, and is configured to suppress the contents of the data register in byte units or to notify the 111th service processor as is, depending on the state of the data control register.