Diagnostic Control Program (Dcp) - IBM 5110 Maintenance Information Manual

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DIAGNOSTIC CONTROL PROGRAM (DCP)
DCP controls access to most of the diagnostic programs
residing in ROS. Only the bring up program is not under
the control of DCP. DCP allows you to alter or display
any location in read/write storage. The two operating
modes of DCP are normal and diagnostic. The following
charts shows the loading of and the options for DCP
normal mode.
POWER ON
or RESTART
Bring Up Diag
Complete
To Load DCP Normal Mode:
1. Press and hold the CMD key.
2. Press the HOLD key.
Customer Job
3. Press the - (minus) key on the numeric keyboard.
4.
Release the CMD key. (DCP is now loaded)
Options: Display and Alter
Display:
1. Press the D key.
2. Enter the address you want to display.
3. Scroll the address up or down as required.
4. Press the ATTN key to clear the display.
Alter:
1.
Press the A key.
2. Enter the address you want to alter.
3. Enter the new data.
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4. Press the EXECUTE key to enter data.
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To continue in DCP diagnostic mode: To return to the customers job:
1. Press the ATTN key.
2. Press and hold the CMD key.
3. Press the x (times) key on the
numeric keyboard. See DCP
Diagnostic Mode in this section.
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1. Press the ATTN key.
2. Press and hold the CMD key.
3. Press the
+
(plus) key on the
numeric keyboard.
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