Concurrent Technologies VP 110/01 Series, Техническое справочное руководство

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10.2.3 Starting the Master Test Handler
VSA mode is selected by setting the Mode switch to the VSA position as indicated in Figure 9-1.
The board will enter VSA mode before the BIOS starts displaying sign-on text, so the first
console output will be the VSA user attention prompt.
When VSA starts, it outputs attention characters to all possible console devices simultaneously;
i.e. a video adapter and the COM1 port. On the video adapter this will appear as a series of
asterisks “*”, on a serial console the appearance of the character will depend on the console’s
baud rate.
Only the board in the system controller slot can provide console output. This is the Master Test
Handler (MTH); if other boards are present they will automatically enter their Slave Test
Handlers (STH) and await test execution requests from the Master.
When the attention prompt is displayed, pressing “U” (uppercase ”u”) on the desired console
device will display an option menu. From here the Master Test Handler can be entered, or the
board booted back to BIOS mode.
The tests available in VSA mode are described as Built-In Self-Tests (BISTs).
10.2.4 Remote Testing from the System Controller
In a system comprising more than one Concurrent Technologies’ CPU board, only the system
controller board will provide a console interface; however, this board can be used to test the
other VSA configured boards through their Slave Test Handlers.
During system startup, the VSA configured system controller will detect all other functional, VSA
configured boards. These boards will be identified via the VSA startup screen, together with their
logical slot ID.
The default test slot is initially set as slot zero (the system controller). This can be changed using
the SLOT command to any valid logical slot. When the default slot is changed, all tests will run
on the slave board and the TESTMENU command will return the list of valid BISTs for that
board.
10.2.5 Bootloading the BIOS
The board can be booted to BIOS mode from VSA mode using the BPHASE command. Once in
BIOS mode, warm boots will confine execution to the BIOS firmware; however, if a cold boot is
generated without changing the VSA switch, the board will re-enter VSA mode.
If the system controller board is booted to VSA mode and the “U” command is not entered, the
firmware will proceed to boot the board back to BIOS mode.
10-2 VP 110/01x
VME System Architecture Test Handler