JPH0522380A - Pseudo host emulate system - Google Patents

Abstract

PURPOSE:To realize the pseudo host emulate system in which the evaluation of a communication function controlling a communication IC and as communica tion protocol is executed by its own equipment only. CONSTITUTION:A main controller 1 publicates a transmission command or a reception command to a communication function 2 and a pseudo host emulate function 5 by using a key entry from a KB input device 6. The communication function 2 and the pseudo host emulate function 5 are communicated with each other via an IO instruction analysis function 3 and IC emulate function 4 according to the communication protocol. When the communication function 2 executes an instruction to control the communication IC, a CPU is trapped and the processing is transferred to the IC emulate function 4 through the IO instruction analysis function 3. In the case of an OUT instruction, the IC emulate function 4 transits the IC state and in the case of an IN instruction, a status is transferred to the IO instruction function 3 and the processing is returned to the IO instruction analysis function. Succeedingly, all the operations are finished to restore the communication function 2 and the processing result is printed out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pseudo host emulation system, and more particularly to a pseudo host emulation system for evaluating a communication function of a personal computer terminal for controlling a communication IC and a communication protocol by utilizing an IO trap function of a CPU.

[0002]

2. Description of the Related Art Conventionally, the evaluation of the communication function of a personal computer terminal has been performed by preparing a pseudo host device, a communication device, and a line connecting these devices, and creating the same state as the actual operating environment and executing the processing. It was

[0003]

The above-mentioned evaluation of the communication function of the conventional personal computer terminal has a problem that it cannot be carried out unless the environment such as the pseudo host device and the communication device and the line connecting them are prepared.

It is an object of the present invention to provide an IC emulation function for emulating a communication IC and a pseudo host emulation function for operating as a pseudo host in the device itself so that the device itself can function as a communication IC. It is to provide a pseudo host emulation method capable of evaluating a communication function for controlling a communication protocol.

[0005]

According to the pseudo host emulation method of the present invention, a personal computer terminal equipped with a CPU having a communication function and an IO trap function is used by the communication function to control a communication IC. IO command analysis function for recovering instruction hunt and processing of the communication function, IC emulation function for emulating the communication IC controlled by the communication function, and pseudo host emulation functioning as a pseudo host in the own device. It has a rate function and is configured to evaluate the communication function for controlling the communication IC and the communication protocol in its own device and output the result.

[0006]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.

1 is a main controller, 2 is a communication function, 3 is an IO instruction analysis function, 4 is an IC emulation function, 5 is a pseudo host emulation function, 6 is a keyboard input device (hereinafter referred to as a KB input device). 7) indicates a printer, respectively.

Next, each function which constitutes this embodiment will be described.

The main controller 1 has a function of controlling the communication function 2 and the pseudo host emulation function 5, a function of evaluating the communication function 2, and a function of outputting the evaluation result to the printer 7. FIG. 2 is a flow chart of processing of the main controller.

At step (hereinafter referred to as S) 1, the operator receives a key input from the KB input device 6, and at S2, a transmission instruction and a reception instruction are output to the communication function 2 and the pseudo host emulation function 5 according to the evaluation item. Then, in S3, the end notification from the communication function 2 and the pseudo host emulation function 5 is waited, and the IC control abnormality notification is also received. Next, in S4, the evaluation of the communication function 2 is completed with respect to both instructions, and I
Judgment is made from the IC control abnormality notification from the C emulation function 4, the evaluation result is output to the printer 7 in S5, and the processing is ended.

The communication function 2 is a function to be evaluated. The communication IC is controlled by the transmission instruction and the reception instruction from the main controller 1 to perform data communication with the host device according to the communication protocol, and after the operation is finished, the main controller 1 is notified of the termination result.

The IO instruction analysis function 3 has a function of analyzing the IO instruction trapped by the CPU and a function of restoring the processing of the communication function 2. FIG. 3 is a flow chart of processing of the IO instruction analysis function.

The IO instruction of the step (hereinafter, trap address) trapped by the CPU in S6 is analyzed, and S7 is analyzed.
Only the command to control the communication IC with the port No. If it is a communication IC port, the IC emulation function 4 is notified of a trap (hunt notification) in S8. When the processing of the communication function 2 is restored, if the trapped instruction is other than the instruction for controlling the communication IC, S9.
In the case of the instruction for controlling the communication IC from the trap address, the processing is restored from the step following the trap address in S10.

The IC emulation function 4 has a function of emulating a communication IC with respect to the communication function 2,
Intervenes between the instruction analysis function 3 and the pseudo host emulation function 5, analyzes the instructions and notifications from both sides, and transitions the IC state or status (data that punctures the IC state) by these instructions and notifications. And send and receive sent and received data.

FIG. 4 is a flow chart of the processing by the hunt notification of the IC emulation function.

When the hunt notification is received from the IO command analysis function 3 in S11, the trapped command is analyzed in S12, and in the case of a data transmission / reception command, in S13, a data transfer request or a data transfer request is sent to the pseudo host emulation function 5. In the case of an IC control instruction, the state of the IC is changed at 14 or the IO instruction analysis function 3 is notified of the status. If the IC control is correct or incorrect, the main controller 1 is notified in step S15.

FIG. 5 shows the transmission notification of the IC emulation function /
It is a flowchart of the process by reception notification.

When the transmission notification / reception notification is received from the pseudo host emulation function in S16, the IC state is changed according to the contents of the notification in S17.

The pseudo host emulation function 5 has a function as a pseudo host device with respect to the communication function 2 and a function for judging whether the communication protocol is right or wrong.

FIG. 6 is a flow chart of processing by the transmission instruction / reception instruction of the pseudo host emulation function.

When the transmission instruction and the reception instruction are received from the main controller 1 in S18, data communication with the communication function 2 is performed via the IC emulation function 4 in S19,
After the operation ends, the end result is notified to the main controller 1 in S20.

FIG. 7 is a flow chart of processing by the data transfer notification / data transfer notification of the pseudo host emulation function.

The pseudo host emulation function 5 has an internal mode for determining an operation in response to a request from the IC emulation function 4, and when it receives a data take-back notification and a data delivery notification in S21, the notification request type in S22. The control is performed such that the transmission mode is set for data transmission, the reception mode is set for data reception, and the idle mode is set for other cases. The operation contents of each mode are as described below. In the transmission mode, a transmission notification is issued to the IC emulation function 4, and the transmission data is delivered one by one at the timing when the data delivery request is received in S23. In the reception mode, a reception notification is issued to the IC emulation function 4, and S
At 24, the reception data is received one by one at the timing when the data reception request is received.

Next, the operation of evaluating the communication function will be described. The drawing will be described with reference to FIG.

The main controller 1 issues a transmission instruction or a reception instruction to the communication function 2 and the pseudo host emulation function 5 by using a key input from the KB input device 6 by the operator as a trigger. The communication function 2 and the pseudo host emulation function 5 receive an instruction from the main controller 1, and communicate via the IO command analysis function 3 and the IC emulation function 4 according to the communication protocol. When the communication function 2 executes a command for controlling the communication IC, C
The PU traps and transfers the processing to the IC emulation function 4 via the IO instruction analysis function 3. In the IC emulation function 4, in the case of an OUT instruction, the IC state is changed, and in the case of an IN instruction, the status is passed to the IO instruction analysis function 3,
The processing is returned to the IO instruction analysis function 3. IO instruction analysis function 3
Returns the processing to the communication function 2, but at this time, the status is passed to the communication function 2 only in the case of the IN command. When the data transmission / reception command is executed by the communication function 2, the CPU traps,
The processing is transferred to the IC emulation function 4 via the IO instruction analysis function 3. The IC emulation function 4 notifies the pseudo host emulation function 5 of a data take-up request in the case of an OUT instruction and a data delivery request in the case of an IN instruction, and shifts the processing to the pseudo host emulation function 5. The pseudo host emulation function 5 delivers or receives data depending on the request content from the IC emulation function 4 and the operation mode. After the operation is completed, the processing is returned to the IO instruction analysis function 3 via the IC emulation function 4. The IO command analysis function 3 returns the processing to the communication function 2, but only in the case of the IN command, the data transferred from the pseudo host emulation function 5 is transferred to the communication function 2.

[0027]

As described above, according to the present invention, the hunting of the instruction used by the communication function to control the communication IC and the IO instruction analysis function for restoring the processing of the communication function,
By providing an IC emulation function that emulates a communication IC and a pseudo host emulation function that operates as a pseudo host in the own device, a communication function that controls the communication IC and the communication protocol only in the own device There is an effect that it is possible to carry out the evaluation of.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a flow chart of processing of a main controller.

FIG. 3 is a flowchart of processing of an IO instruction analysis function.

FIG. 4 is a flowchart of processing by hunt notification of an IC emulation function.

FIG. 5 is a flow chart of processing by transmission notification / reception notification of the IC emulation function.

FIG. 6 is a flowchart of a process according to a transmission instruction / reception instruction of the pseudo host emulation function.

FIG. 7 is a flow chart of processing by a data transfer notification / data transfer notification of the pseudo host emulation function.

[Explanation of symbols]

1 Main Controller 2 Communication Function 3 IO Command Analysis Function 4 IC Emulation Function 5 Pseudo Host Emulation Function 6 Keyboard Input Device (KB Input Device) 7 Printer

Claims (1)

Claim: What is claimed is: 1. A personal computer terminal equipped with a CPU having a communication function and an IO trap function, wherein the communication function hunts an instruction used for controlling a communication IC and the communication function. It has an IO command analysis function for restoring processing, an IC emulation function for emulating the communication IC controlled by the communication function, and a pseudo host emulation function for operating as a pseudo host in its own device. A pseudo host emulation method, wherein the communication function for controlling the communication IC and the communication protocol is evaluated in the device and the result is output.