F - Fill Memory - GE 68K System User Manual

68K System Monitor
User's Guide

F - Fill Memory

þ
CPM
Platform
Use this command to repeatedly write a value to a specified region of memory.
Description
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.
Below is usage and syntax information for this command
Syntax
Command Format
Variables
Parameters
Example
Special
Considerations
General
Full Release
þ þ
D20 D20 ME
D20 Base D20 Base
f [/(b | w | l)] beg_addr end_addr value
/b = bytes (octets), the default mode
/w = words
/l = long words
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
Type f /w 200000 200400 F034 and press
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.
•
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.
SWM0023-1.00 -2
þ þ
D20/200 D20/200 ME
CCU Base CCU Base
ENTER
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þ
D25
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