GE 68K System Benutzerhandbuch

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CPM

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D20
D20 Base

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D20 ME
D20 Base

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D20/200
CCU Base

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D20/200 ME
CCU Base

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D25

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.

Below is usage and syntax information for this command

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)]]

/v

= volatile (static) RAM

/n

= non-volatile RAM (NVRAM)

/s

= destructive sequential test

/gv

= global volatile (static) RAM

/gn

= global non-volatile RAM (NVRAM)

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

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.