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IBM System/7 Functional Characteristics - All about the IBM 1130 ...

IBM System/7 Functional Characteristics - All about the IBM 1130 ...

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STORE KeyPressing this key stores <strong>the</strong> data represented by <strong>the</strong> storage data/address rotary switchesinto <strong>the</strong> register or storage location specified by <strong>the</strong> settings of <strong>the</strong> store/displayselect and store/display level switches.If main storage is selected, <strong>the</strong> location to receive data must first be set into <strong>the</strong>IAR by using <strong>the</strong> storage data/address rotary switches. Sequential depression of <strong>the</strong> storekey automatically increments <strong>the</strong> address if main storage is selected. The store keyoperates only when <strong>the</strong> machine is in <strong>the</strong> stop state.MAIN STORAGE DISPLAY KeyPressing this key causes <strong>the</strong> data lights to display <strong>the</strong> data located at <strong>the</strong> main storageaddress specified by <strong>the</strong> IAR. Sequential depression of this key automatically increments<strong>the</strong> address.Register contents are automatically displayed by <strong>the</strong> data lights when <strong>the</strong> machine isstopped. No key need be pressed. The register that is displayed is determined by <strong>the</strong> settingsof <strong>the</strong> select and level switches.The main storage display key operates only when <strong>the</strong> machine is in <strong>the</strong> stop state and<strong>the</strong> store/display select switch is in <strong>the</strong> main storage position.RESET KeyThe following actions occur when <strong>the</strong> reset key is pressed:1. The entire <strong>System</strong>/7 is reset, with <strong>the</strong> exception of digital and analog outputpoints.2. The <strong>System</strong>/7 processor enters <strong>the</strong> manual wait state and all error and interruptionconditions are cleared (set to 0). Internal registers (accumulators, indexregisters, and backup instruction address registers) are not reset.3. The priority interrupt mask is set so that all interruptions are enabled.AUTO RSTRT (Automatic Restart) SwitchThis is a two-position toggle switch. When <strong>the</strong> switch is set in <strong>the</strong> off position, operatorintervention is necessary to restart <strong>the</strong> power system after a shutdown due to loss of linevoltage.If <strong>the</strong> switch is set to <strong>the</strong> on position, <strong>the</strong> enclosure will attempt to restart <strong>the</strong> powersystem for an indefinite period starting one second after an initial power failure. Whenpower is restored in <strong>the</strong> enclosure, <strong>the</strong> modules are reset automatically. If <strong>the</strong> enclosurecontains a processor module, <strong>the</strong> processor attempts to perform an IPL operation. If <strong>the</strong>power failure and automatic restart occurred in an expansion enclosure, no IPL operationis performed. At <strong>the</strong> end of <strong>the</strong> IPL function, bit 0 of <strong>the</strong> level 3 accumulator will beset on to indicate that <strong>the</strong> IPL was started by <strong>the</strong> auto restart function, not <strong>the</strong> programload key.Operating note. If an automatic IPL is not concluded, press <strong>the</strong> RESET key beforepressing <strong>the</strong> PROGRAM LOAD key.POWER ON LightThe power on indicator is turned on when power is in <strong>the</strong> system.Operator Console 5-9

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