| 摘要 |
PURPOSE:To troubleshoot easily a troubled location in constituting a new system or in case of an error by providing a CPU analyzing and classifying address information included in an instruction and an I/O port displaying the state of the monitor. CONSTITUTION:The monitor is provided with an I/O port 1 monitoring the state of a standard digital interface bus GPIB, the CPU2 analyzing and classifying a monitored GPIB instruction, a program ROM, a work memory section 3 for the CPU2 and an I/O port 4 to light the state of the GPIB. After the monitor is initialized with the power supply applied, a handshake line is made active and a new data is given onto a data line, then the distinction of an instruction of the data controller or a data of a talker is discriminated by the control line. When the data is an instruction, it is inputted to the monitor so as to classify it. Then the end of data transmission is confirmed by the handshake line and the system restores the next data reception state. |
