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 put the D25 into Debug Mode.

This mode disables certain checks in the system so that it will ignore small system
violations during debugging sessions (such as allowing the writing of FLASH code
to RAM during a download).

In this mode, you can make making changes to the base address and size of the
SRAM, NVRAM and FLASH regions in the NVRAM configuration header.

Below is usage and syntax information for this command

DEBUG

None

None

Type DEBUG and press 

ENTER

.

Results: The output displays the current debug state.  The user

receives the following prompt:

Any reply other than ‘y’ aborts the rest of the 
command. Otherwise, the command prompts you to 
enter new values for the FLASH, SRAM, and 
NVRAM base address and size.  Entering a zero 
indicates that the item is to remain unchanged.

Once the new data has been entered, you are 
prompted:

Any response other than ‘y’ will cause the monitor to
re-issue the prompts for the FLASH, SRAM, and
NVRAM base address and size.

Pressing 

CNTRL

-

C

 will abort the command.

If the user responds ‘y’, the command writes new
data to the NVRAM header and a new NVRAM
header CRC is calculated and stored.

The debug command is a toggle, turning the debug mode ON if
it is OFF, and OFF if it is ON.

Enabling the Debug Mode degrades the performance of the
system and may cause certain CPU intensive commands to
activate the watchdog and reset the system.