F - fill memory, Fill memory -37 – GE 68K System User Manual

Page 63

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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.

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