Motorola MVME712A/D3 User Manual download pdf (Page 55)

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

MVME167BUG/D3 3-11

Permutations - PERM

This command performs a test which verifies that the memory in the test

range can accommodate 8-, 16-, and 32-bit writes and reads in any

combination. The test range is the memory range specified by the RAM test

group configuration parameters for starting and ending address. If the test

address range (test range) is less than 16 bytes, the test immediately returns

pass status. The effective test range end address is reduced to the next lower

16-byte boundary if necessary. This test performs three data size test phases in

the following order: 8, 16, and 32 bits. Each test phase writes a 16-byte data

pattern (using its data size) to the first 16 bytes of every 256-byte block of

memory in the test range. The 256-byte blocks of memory are aligned to the

starting address configuration parameter for the RAM test group. The test

phase then reads and verifies the 16-byte block using 8-, 16-, and 32-bit access

modes.

Command Input:

167-Diag>RAM PERM

or:

167-Diag>SRAM PERM

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 PERM: Permutations............. Running --->

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

RAM PERM: Permutations............. Running ---> PASSED

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

RAM PERM: Permutations............. Running ---> FAILED

Data Miscompare Error:

Address =________, Expected =________, Actual =________

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 238 239

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Motorola MVME712A/D3 User Manual Page 55