ADIC Scalar 1000, SNC 5100 manual Secondary Post, Address Test, Identify and Execute bootrom

SNC 5100

This test writes and reads a series of diagnostic patterns to each memory location in SDRAM. This test is identified by the repeated flash of the SCSI2 LED. This test can take several seconds to complete.

Address Test

Figure 16 Address Test

This test writes and reads address tags to memory to test for bad SDRAM address lines. This test is identified by the flash of the SCSI3 LED. POST then relocates itself to SDRAM and moves it’s stack from processor internal RAM to SDRAM. Control is then transferred to the SDRAM based Secondary POST.

Secondary POST

This stage of POST attempts to locate and execute the intermediate loader, or “bootrom”. If the operator presses the interrupt button then POST will enter into the service menu. See the section “POST Service Menu” for details.

Identify and Execute bootrom

Figure 17 Identify and Execute

200 Secondary POST

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