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68K System Monitor
User's Guide
GE Energy Services
General SWM0023-1.00 -2
Full Release
3-37
F - Fill Memory
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 repeatedly write a value to a specified region of memory.
The command requires three numerical arguments in hexadecimal format:
• first is the starting address of the region to fill
• second is the ending address of the region
• third is the value to write to the memory region
The fill value may be a byte (octet), a word, or a long word, depending on the mode
selected by the switch.
Syntax
Below is usage and syntax information for this command
Command Format
f [/(b | w | l)] beg_addr end_addr value
Variables
/b = bytes (octets), the default mode
/w = words
/l = long words
Parameters
beg_addr = start address of region in hexadecimal
end_addr = address to fill up to in hexadecimal
value = value to put in region in hexadecimal
Example
Type f /w 200000 200400 F034 and press ENTER.
Results: This fills the RAM memory from hexadecimal
address 200000 to 200400 with words of F034
hexadecimal.
The system displays the prompt when it completes
this instruction.
Special
Considerations
• An attempt to fill EPROM memory results in a bus error.
• You can modify systems with FLASH EPROM such as the
D25 and CCUME using this command.