HP 3000 Manuals HP 3000 Manuals
System Control via System Console and Access Port (AP)
The System Console communicates with the host system hardware through the
Access Port (AP), an interface card located in the Channel I/O (CIB)
section of the system card cage. The System Console is cabled to the AP
card, letting you enter commands which directly affect the hardware.
Table 2-1 outlines the AP commands and their functions.
Table 2-1. Access Port Commands
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| COMMAND | ACCESS PORT FUNCTION |
| | |
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| | |
| CA | Configure system remote support modem. |
| | |
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| | |
| CO | Enter Console Mode (return from Control Mode). |
| | |
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| | |
| DI | Disconnect line to remote Console. |
| | |
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| | |
| DR | Disable access by a remote Console. |
| | |
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| DS | Disable display of system status line during Console Mode. |
| | |
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| | |
| ER | Enable access by a remote Console terminal. |
| | |
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| ES | Enable display of system status line during Console Mode. |
| | |
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| | |
| HE | Display Help Screen. |
| | |
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| | |
| RS | Stop all processing, initiate SPU self test, load software |
| | from load device if enabled for autoboot. (Hard reset.) |
| | |
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| | |
| SE | Transfer remote terminal from Console Mode to Session Mode. |
| | |
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| TA | Initiate Access Port self test. |
| | |
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| | |
| TC | Transfer processor execution to operating system specific |
| | routine. (Transfer of Control soft reset) |
| | |
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| | |
| TE | Send messages between local and remote Consoles. |
| | |
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Access the System Hardware
To access the system hardware through the Access Port (AP):
1. Enter:
:CTRLB at the System Console.
This places the Console in Control Mode. Note that the
Control Mode prompt (CM>) is displayed.
2. Enter the desired two character AP command, followed by Return, at
the prompt.
3. Return the Console to Console Mode. Enter:
CM> CO Return
NOTE Some commands, such as RS and TC, do not require entry of the CO
command to return the Console to Console Mode. The system
automatically returns to Console Mode after these commands have
completed their functions.
Reset and Boot the System
There are three ways to reset and boot up the system:
* Power up the system by switching it on.
* Reset the system from the front panel by pressing the RESET
button.
* Perform a hard or soft reset from the hardwired System Console or
enabled remote Console.
Refer to System Startup, Shutdown and Configuration Reference Manual
(32650-90042) for information on the characteristics of each type of
reset.
System Self Test
The system undergoes a self test upon a hard reset. In Series 930
systems, the self test checks:
* Central Processing Unit (CPU)
* Instruction Unit
* Execution Unit
* Floating point Coprocessor
* Register File
* Translation Look-aside Buffer (TLB)
* Cache boards
* Memory controllers and arrays
* All I/O cards that have a built-in, executable test routine.
The self test also initializes the Channel Adapter (CA) and Device
Adapter (DA) boards. The first memory controller is initialized on a
hard reset, but not on a soft reset.
In Series 950 systems, the self test verifies that enough hardware is
functioning to load and execute extended diagnostics from the Initial
Program Loader (IPL). This involves testing the processor, first memory
controller, the console, boot devices, and I/O paths to the Console and
boot devices. If the initial test is successful, the code performs a
full test of Nonvolatile Memory (NVM), stable storage, the Central
Processor Unit (CPU), the System Interface Unit (SIU), the cache, and the
Translation Look-aside Buffer (TLB).