IBM System/23 Datamaster: Difference between revisions
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| 03 || Reserved || Unused. Tests pass directly from 02 to 04.
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| 04 || RAM || Test for the first
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| 05-07 || CRTC || Initialization and test; any error in this step or earlier requires a probe
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| 1A-29 || ROS Extensions || Test for ROMs in expansion slots
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| 2A-30 || RAM || Test for the
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| 31 || Paging Register || For CPU access RAM only
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