SNC 5100

POST will examine the FLASH memory primary bootrom locations to determine whether or not it contains a viable bootrom. If the bootrom appears valid then POST will transfer control to it. If the bootrom image is considered invalid then POST will repeat the bootrom checks at the location of the secondary bootrom. This step is indicated by the flash of the SCSI4 LED.

Start of Bootrom

When POST starts a bootrom image it will display a line like:

Bootrom (*FFF00100)(2)

The number in the first parenthesis is the address of the bootrom’s startup code. The number in the second parenthesis is flag to the operating system to determine what type of boot it has – warm or cold.

Bootrom code will set the ERR LED when it reconfigures the PLD.

Figure 18 Start of bootrom

POST Service Menu

The POST Service Menu is enabled by using a slim tool, for example, an unfolded paper clip, to depress the unlabeled button between the RST button and PWR LED.

POST Service Menu 201

6-00020-02

Page 209
Image 209
ADIC SNC 5100, Scalar 1000 manual Post Service Menu, Start of Bootrom