INPUT AND OUTPUT DATA CONTROL SYSTEM

INPUT AND OUTPUT DATA CONTROL SYSTEM

PURPOSE:To test an input/output device easily by bringing the transmission of a strobe signal and its stop under the control of processor side. CONSTITUTION:When data is set in the register 2 of the input/output device from a processor 1 at the time of a test of the input/output device, the register...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: TSUTANO EIICHI, FUNAKI YASUO
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:PURPOSE:To test an input/output device easily by bringing the transmission of a strobe signal and its stop under the control of processor side. CONSTITUTION:When data is set in the register 2 of the input/output device from a processor 1 at the time of a test of the input/output device, the register 2 of the input/output device is specified with an address signal of the nontransmission mode of a double address. No strobe signal is sent out to a strobe line 9 even after the data is set in the register 2, so data is not reset even when applied to the register 5 of a terminal device through a data bus 7. Therefore, the constitution corresponding to the disconnection state between the input/output device and terminal device is obtained and the input/output device is tested without exerting any influence upon the terminal device.