JPH0645911Y2 - Logic analyzer probe device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a probe device of a logic analyzer used for displaying a motion trajectory of a microprocessor in a mnemonic, that is, for debugging a program or the like.

[Prior Art] As shown in FIG. 2, a conventional logic analyzer for displaying a movement trajectory of a microprocessor includes a logic analyzer main unit 1, a personality probe cable 2, and a personality probe pod 3.
And CPU cable 5. A probe with multiple state channels and multiple timing channels
One end of the cable 2 is detachably connected to the logic analyzer main unit 1 by a connector 4. The pod 3 is coupled to the other end of the probe cable 2 and includes circuits such as an amplifier and a comparator for processing a signal so that the logic analyzer main unit 1 can use the signal. The CPU cable 5, which is a flat cable, is used to connect the target device 6 to the pod 3.
Has a connector 7 at one end for detachably connecting to
It has a connector 8 at the other end for connecting to the target device 6. The pod 3 is provided with an IC socket 9 for selectively mounting a microprocessor (not shown).

A signal required for the state analysis is sent from the target device 6, which is an object to be measured in which a microprocessor is mounted, to the lock analyzer main unit 1 via the CPU cable 5, the pod 3, and the personality probe cable 2.

[Problems to be solved by the invention] By the way, like the Motorola, Inc. 32-bit microprocessor MC68020, it has a built-in instruction cache and has a control terminal (pin) for enabling and disabling this cache. If the target device 6 is mounted on the target device 6, the control terminal cannot be controlled from the outside.

On the other hand, if the microprocessor is attached to the IC socket 9 of the pod 3, it becomes possible to control the control terminal from the outside through the cable 2 of the personality probe.
However, when a microprocessor having a high system clock frequency is set on the pod 3, there is a possibility that a malfunction may occur due to the delay of the control signal by the CPU cable 5.

Therefore, an object of the present invention is to provide a probe device of a logic analyzer capable of performing measurement according to the situation.

[Means for Solving Problems] The present invention for solving the above problems and achieving the above objects will be described with reference to the reference numerals of FIG.
A first cable 2 having one end connected to the logic analyzer main unit 1, a pod 3 connected to the other end of the first cable 2, one end detachably connected to the pod 3, and the like. A second cable 5 having an end connected to the target device 6, a first socket 9 for a microprocessor arranged in the pod 3, and a second cable 5 arranged at the other end of the second cable 5 It relates to a probe device of a logic analyzer which comprises a second socket 10 for a microprocessor.

[Operation] The first socket 9 of the probe pod and the second socket 10 provided on the other end side of the second cable 5 are used alternatively. A microprocessor is attached to the first socket 9 when it is desired to control the control terminal of the microprocessor from the outside. A microprocessor is attached to the second socket 10 to prevent malfunction.

[Embodiment] Next, a logic analyzer according to an embodiment of the present invention will be described. However, in FIG. 1, the same parts as those in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted.

Also in FIG. 1, as in FIG. 2, the logic analyzer main unit 1, the personality probe cable, that is, the first cable 2, the pod 3, the CPU cable, that is, the second
The cable 5 and the target device 6 are sequentially connected. However, the IC socket for the microprocessor is provided not only on the pod 3 but also on the tip of the CPU cable 5. That is, not only is the pod 3 provided with the first socket 9, but the connector 8 is also provided with the second socket 10 for the microprocessor.

Therefore, for example, when it is desired to externally control the control terminal of 32-bit microprocessor MC68020 manufactured by Motorola, Inc., a microprocessor (not shown) is attached to the first socket 9 and the logic analyzer main unit 1 is attached to the microprocessor 1. By operating a switch (not shown) provided, the microprocessor is controlled via the probe cable 2.
The first socket 9 is also used when the microprocessor cannot be arranged on the target device 6 side due to space limitations.

On the other hand, if it is not necessary to control the microprocessor with the logic analyzer main unit 1, or if there is a risk of malfunction due to the delay due to the CPU cable 5 due to the high system clock frequency, the microprocessor is set to the second Install it in socket 10.

[Modification] The present invention is not limited to the above-mentioned embodiment, but can be modified. For example, the logic analyzer main unit 1 is also applicable to a case where the main unit and the adapter are combined and the probe cable 2 is connected to the adapter.

[Effect of the Invention] As is apparent from the above, according to the present invention, the microprocessor can be arranged so as to match the situation of the target device and the situation of use of the function of the microprocessor.

[Brief description of drawings]

FIG. 1 is a perspective view showing the principle of a logic analyzer according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the principle of a conventional logic analyzer. 1 ... Logic analyzer main unit, 2 ... Probe cable, 3 ... Probe pod, 4 ... Connector, 5 ... CPU cable, 6 ... Target device, 7,
8 ... Connector, 9 ... First socket, 10 ... Second socket.

Claims (1)

[Scope of utility model registration request] 1. A first cable (2) having one end connected to a logic analyzer main unit (1), and a pod (3) coupled to the other end of the first cable (2), A second cable (5), one end of which is detachably connected to the pod (3) and the other end of which is connected to a target device (6), and a microprocessor arranged in the pod (3) A probe device for a logic analyzer comprising a first socket (9) and a second socket (10) for the microprocessor arranged at the other end of the second cable (5).