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

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

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

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Initiate Read0 16 21 24 31111111Addressi 111111j IDevice0 1 1 0 01111Fun1 1 0IIModifier0 0 0 oio o o X1111111X X X X 6 6 0 0 or 1An X10 instruction with an initiate read IOCC sends a block of contiguous data from<strong>System</strong>/7 storage to <strong>1130</strong> storage. The starting location of <strong>the</strong> <strong>System</strong>/7 data and <strong>the</strong>number of words transferred must have been established by previously executed controlIOCC's. The address field of <strong>the</strong> initiate read IOCC- contains <strong>the</strong> starting location in <strong>1130</strong>storage for <strong>the</strong> data to be received.Modifier field bit 31, described previously in "Interruptions To <strong>System</strong>/7," is used tocontrol interruptions as follows:Bit 31 = 0 — Do not interrupt <strong>System</strong>/7 for operation endBit 31 = 1 — Interrupt <strong>System</strong>/7 for operation endInitiate Write0 16 21 24 31Address Device Fun Modifier01 1 Oololoo ooio 0 0III I IIIIIIIIIII 1111 II 111111X X X X 6 5 0 0 or 1X1An XIO instruction with an initiate write IOCC sends a block of contiguous data from<strong>1130</strong> storage to <strong>System</strong>/7 storage. The number of words transferred and <strong>the</strong> <strong>System</strong>/7starting location into which <strong>the</strong>y are stored must have been established by previouslyexecuted control IOCC's. The address field of <strong>the</strong> initiate write IOCC contains <strong>the</strong> startinglocation in <strong>1130</strong> storage for <strong>the</strong> data to be transmitted.Modifier field bit 31, described previously in "Interruptions To <strong>System</strong>/7," is used tocontrol interruptions as follows:Bit 31 = 0 — Do not interrupt <strong>System</strong>/7 for operation endBit 31 = 1 — Interrupt <strong>System</strong>/7 for operation end

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