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IBM 5280 Distributed Data System - Index of

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Single InstructionWhen you request the single instruction function, the <strong>5280</strong> executes the nextinstruction and stops. After the instruction is executed, trace information isdisplayed on the status line, beginning in position 41. To select the single instructionfunction, enter the uppercase letter S.LoopWhen you request the loop function, the <strong>5280</strong> executes the program instructionsuntil it again reaches the original address-stop address. It stops at the address-stopaddress, and trace information is displayed on the status line, beginning in position41. To select the loop function, enter the uppercase letter L.Main Storage DumpYou can request a main storage dump function while the <strong>5280</strong> is operating inaddress-stop mode. The dump function is requested the same as a normal dump(Dp@@BB), that is, the contents <strong>of</strong> storage are written to data set 15. (SeeDump Function.) When the dump is completed, you may continue with otheraddress-stop mode functions. <strong>Data</strong> set 15 is not closed until the partition isexited, or until the partition is reloaded if the exit operation calls the standardload processor, or until the application program explicitly closes the data set.TraceYou can request a trace while the <strong>5280</strong> is operating under address-stop mode.The trace function is requested the same as a normal trace (T4ss). (See TraceFunction.) The <strong>5280</strong> executes the remaining program instructions and does notstop, but the trace information continues to be written to data set 15.Cancel Address-StopYou can cancel address-stop mode by keying an uppercase letter C. The <strong>5280</strong>will execute the remaining program instructions with no stops and no trace output.Diagnostic Aids 317

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