JPS59180899A - Deciding method of wrong insertion of p-rom - Google Patents

Abstract

PURPOSE:To decide automatically wrong insertion in a packaging mode by storing both program identification name and the packaging position to each P- ROM and supplying said identification name and packaging position by the P- ROM itself. CONSTITUTION:A CPU1 is equal to a 1-chip microcomputer, and the CPU1, P- ROM3-5, an input/output control circuit 6 and a constant setting circuit 7 are connected to a common bus 2. The circuit 6 controls the input and output of this system, and P-ROM3-5 record the programs and data needed for the execution of this program. The circuit 7 consists of a hardware switch and sets the program identification name which is executed through this substrate as well as the packaging positiols of P-ROM3-5 respectively.

Description

Detailed Description of the Invention (a) Technical Field This invention relates to a P'-RO in a microcomputer system equipped with a plurality of P-ROMs, which are non-volatile memories.
This invention relates to a method for determining erroneous insertion of M.

(b) Prior Art and Its Disadvantages A plurality of P-ROMs are usually mounted on a printed circuit board constituting a microcomputer system. Mask R
Unlike O and M, P-ROM is first written with a program by a P-ROM writer or the like, and then mounted on the board. However, when many P-ROMs are mounted on one board, the mounting position of each P-ROM may be incorrect. Furthermore, when there are multiple boards of different types, a P-ROM that should be mounted on one board may be mistakenly mounted on the other board. Conventionally, in order to prevent such erroneous insertion, each P-R
A label indicating the program identification name (the program identification name specifies the board to be mounted) and the mounting position on the board (usually expressed as a number) is affixed to the OM, and the operator uses the label. Each P-R by referring to
It was possible to mount the OM in the correct position.

However, this method has the drawback that if a mistake is made in pasting the label on the P-ROM or writing the identification name on the label, it may cause an insertion error, and the pasting of the label and the writing of the identification name must be done manually. However, as far as the method was concerned, there was a problem in that such insertion errors often occurred.

(C1 Purpose of the Invention The purpose of this invention is to store the program identification name and the mounting position of the P-ROM in each P-ROM, so that the P-ROM itself can store the program identification name and the mounting position of the P-ROM. It is an object of the present invention to provide a P-ROM erroneous insertion determination method that can automatically determine whether or not there has been an erroneous insertion at the time of P-ROM mounting by supplying data.

(d) Structure and effect of the invention To summarize the structure of this invention, the P-ROM records the program identification name and its mounting position on the P-ROM board in a specific area along with a normal program. . Further, on the board side, the program identification name and the address of the specific area for each P-ROM are set as constants by constant setting means. In this way, by recording the program identification name and mounting position on the board in each P-ROM, and setting the program identification name and specific area address on the board, the
- After mounting the ROM, read the program identification name and mounting position from the specific address of each P-ROM, compare the contents with the program identification name and mounting position set on the board side, and check the result of either comparison. When the P-ROMs do not match, it can be determined that the P-ROM with the mismatch has been inserted by mistake.

According to this invention, by automatically checking the program identification name, when there are multiple boards of different types, P-ROMs that have the same mounting position and should be mounted on other boards can be eliminated. Furthermore, by automatically checking the mounting position, if there are a plurality of P-ROMs on one board, it is possible to easily determine whether each P-ROM has been inserted incorrectly.

Therefore, when a large number of P-ROMs are mounted on a plurality of types of boards and on one board, it is possible to completely check for incorrect insertion.

Tel Embodiment FIG. 1 is a block diagram of a microcomputer system in which the method of the present invention is implemented. In the figure, CPU
I constitutes a one-chip microcomputer. The above CPUI is used for common lotus 2.

P-ROM3-5. An input/output control circuit 6 and a constant setting circuit 7 are connected. An input/output control circuit 6 controls input/output in this system, and P-ROMs 3 to 5 each record programs and data necessary for executing the system. Further, the constant setting circuit 7 is composed of a hardware switch, and includes a program identification name for identifying a program executed on this board, and P-ROMs 3 to 5.
Set the mounting position of each.

FIG. 2 shows a board layout diagram of the microcomputer system. In the figure, P'-ROMs 3 to 5 are not directly fixed to the printed circuit board 8 by soldering, but are mounted via IC sockets (not shown). That is, P-R
The OMs 3 to 5 are mounted on the board 8 by having program data written in advance by a P-ROM writer and then inserted into the IC sockets. The CPU is directly fixed to the printed circuit board 8 by soldering.

FIG. 3 shows the memory configuration. P-ROMs 3 to 5 each have a size of 16 KB, and P-ROM 3 has addresses oooo to 4000, and P-ROM 4 has addresses 4ooo to 8o.

O is also address 8000~ for P-ROM5.
C000 is assigned to each. The header section of each P-ROM is a program identification name storage area M as shown in the figure.
A and a P-ROM insertion position storage area MB, which stores the program identification name of the P-ROM and the mounting position of the P-ROM on the board 8.

FIG. 4 shows the contents of a table showing the program identification name set by the constant setting circuit 7 and the recording address of the program identification name and the P-R'OM insertion position for each P-ROM number. In this example, the program identifier is 0.
1, and for example, NLJ, 1 P-ROM (P
-The recording address of the program identification name and P-ROM mounting position in ROM3) is 0001,0010.
It shows that. Also, 11k12 P-RO
In M (P-ROM4), the program identification name recording address is 4001, and the P-ROM mounting position recording address is 4010.

FIG. 5 is a flowchart showing a control procedure for determining erroneous P-ROM insertion in the above system. Note that a program for executing this control procedure is stored within the CPUI or in a ROM (not shown).

When all the P-ROMs 3 to 5 are mounted and the power is turned on, the process advances to 01, and first the program identification name is read from the constant setting circuit 7. The read program identification name is stored in a predetermined buffer within the CPU 1. Next, in the same way, from the constant setting circuit 7, P-ROM (P-ROM
3) Read the program identification name recording address, n3
Read the data at that address. This program identification name recording address is the address of area MA of P-RO, M3, so the data read by n3 is No.
Represents the program identification name of P-ROM 1. And n
In step 4, the read program identification name is compared with the program identification name read in nl and set in the constant setting circuit 7, and if they do not match, error processing is performed. If they match, the process proceeds to n5, and from the constant setting circuit 7 to N
o, P-ROM of 1 (P-ROM3)
The mounting position recording address is read and the data at that address is also read (n6). This data is No. 1
Since it represents the data of area MB of P-ROM, the data read at n6 is the P-ROM mounting position. and,
At nl, the read P-ROM mounting position is compared with the actual mounting position of P-ROM No. 1, and if they do not match, error processing is performed. Both the program identification name match judgment in n4 and the P-ROM position match judgment in nl are O.
If it is K, then No. 2 PROM (P-ROM
4), the same processing as n1 to n7 is executed. By performing the above processing on all the installed P-ROMs, error processing will be performed only on the P-ROM in which the error has been inserted. As an error handling method, it is possible to simply blink an alarm lamp, or to display the number of the incorrectly inserted P-ROM at the same time as the alarm lamp blinks. These methods may be arbitrary.

FIG. 6 shows an example of application of this invention. 20 is a main control section, and a plurality of microcomputer systems, 21 are connected to this main control section 20 via a transmission line 23.
．． 22. -...- are connected. Further, a floppy disk 24 is connected to the main control section 20.

Each microcomputer system 21. 22. ---
--, each microcomputer system has a plurality of P-ROMs, and the P-ROM owned by each microcomputer system defines the control of that system itself. The main control section 20 also sends commands to each microcomputer system via the transmission line 23. In such a system, the program identification name of the P-ROM installed in each microcomputer system and the mounting position of each P-ROM are recorded on the floppy disk 24, and after the P-ROM is installed, the P-ROM is By siphoning the program identification name and the mounting position recorded in a specific location of
- ROM erroneous insertion determination can be made.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a microcomputer system in which the method of the present invention is implemented. Figure 2 is a schematic board layout diagram of the system, Figure 3 is a memory configuration diagram, and Figure 4 is a diagram of the memory configuration.
5 is a diagram showing a table of a constant setting circuit, and FIG. 5 is a flowchart showing a control procedure when implementing the method of the present invention in the above system. Further, FIG. 6 is a diagram showing an example of application of the present invention. 1-CPtJ, 3-5--P-ROM. 7 Constant number setting circuit, MA-Prograph A' identification name storage area, MB-P-RO
M mounting position storage area. Applicant Tateishi Electric Co., Ltd. Agent Patent Attorney Hisao Komori Figure 1 Rod Figure 2

Claims (1)

[Claims] (1) In a specific area of each of multiple P-ROMs, the identification name of the program written in advance in the P-ROM and the mounting position of the P-ROM on the board are recorded, and the program is mounted on the board. The identification name of the target P-ROM and the address of the specific area for each P-ROM are set by a constant setting means, and after each P-ROM is mounted, the address of the specific area set by the constant setting means is set. The program identification name and the mounting position are read out from the P-ROM with reference, and the read program identification name and the program identification name set in the constant setting means are compared, and the read mounting position and the actual mounting position are compared. 1. A P-ROM erroneous insertion determination method, comprising: comparing the P-ROM mounting position with a P-ROM mounting position, and generating a P-ROM erroneous insertion signal when any of the comparison results is inconsistent.