GE 68K System - Manual (Page 85)

68K System Monitor
User's Guide
GE Energy Services
General SWM0023-1.00 -2
Full Release 3-59
RT - RAM Test
Platform þ CPM þ D20
D20 Base þ D20 ME
D20 Base þ D20/200
CCU Base þ D20/200 ME
CCU Base þ D25
Description Use this command to perform a non-destructive read-write test of specified RAM
memory.
The test may be for the entire RAM or NVRAM regions, or for a specified range of
values. You may also select to run the test for a set number of loops, or to loop
infinitely.
Note:
If the input range is not on long word boundary, set the range ending
address to the first lesser word boundary.
Syntax Below is usage and syntax information for this command
Command Format CPM / D20: rt / (v | n)
CCU / CCUME: rt / (v | n | gv | gn) [beg_addr
end_addr [(#loops | i)]]
D25: rt / (v | n | s) [beg_addr
end_addr [(#loops | i)]]
Variables /v = volatile (static) RAM
/n = non-volatile RAM (NVRAM)
/s = destructive sequential test
/gv = global volatile (static) RAM
/gn = global non-volatile RAM (NVRAM)
Parameters beg_addr = first address of memory range (in hexadecimal)
end_addr = end address of memory range (in hexadecimal)
#loops = number of times to execute the finite loop for the
specified memory (in decimal) before stopping
i = use infinite loop
Example Type rt /gn 510000 5100b0 25000 and press ENTER .
Results: This tests the integrity of the global non-volatile
(static) RAM between the memory range of 510000
and 5100b0 repeatedly for 25,000 times.
The system simply returns the prompt when it
successfully completes this instruction.
If the test fails, the system displays an error message
before returning to the prompt.
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