Motorola MVME712A/D3 User Manual download pdf (Page 59)

Local RAM (RAM) and Static RAM (SRAM) Tests

MVME167BUG/D3 3-15

Random Data - RNDM

The test block is the memory range specified by the RAM test group

configuration parameters. The test proceeds as follows:

1. A random pattern is written throughout the test block.

2. The random pattern complemented is written throughout the test block.

3. The complemented pattern is veriÞed.

4. The random pattern is rewritten throughout the test block.

5. The random pattern is veriÞed.

This test is coded to use only 32-bit data entities. Each time this test is

executed, the random seed in the RAM test group configuration parameters is

post incremented by 1.

Command Input:

167-Diag>RAM RNDM

or:

167-Diag>SRAM RNDM

Response/Messages:

Note that in all responses shown below, the response "RAM " is RAM or SRAM,

depending upon which test set is being performed. After the command has

been issued, the following line is printed:

RAM RNDM: Random Data.................... Running --->

If all parts of the test are completed correctly, then the test passes.

RAM RNDM: Random Data....................... Running ---> PASSED

If the test fails, then the display appears as follows.

RAM RNDM: Random Data....................... Running ---> FAILED

Data Miscompare Error:

Address =________, Expected =________, Actual =________

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 238 239

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Motorola MVME712A/D3 User Manual Page 59