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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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Sixteen bits of additional module identifying data are stored into <strong>the</strong> index register (R),or accumulator if R=000. Each bit in <strong>the</strong> data word is set on or off to indicate <strong>the</strong> presenceor absence of input or output groups.The following list indicates <strong>the</strong> meaning of each bit when it is set on.Bit Meaning0 Digital input group 1 has interrupt feature1 Digital input group 0 has interrupt feature2 Digital output group 3 is present3 Digital output group 2 is present4 Digital output group 1 is present5 Digital output group 0 is present6 Analog output point 1 is present7 Analog output point 0 is present8 Digital input group 7 is present9 Digital input group 6 is present10 Digital input group 5 is present11 Digital input group 4 is present12 Digital input group 3 is present13 Digital input group 2 is present14 Digital input group 1 is present15 Digital input group 0 is present1111 PEN ig,,IREW

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