User`s guide
Table Of Contents
- Contents
- Tables
- Preface
- Introduction
- Getting Started
- 2.1 Overview
- 2.2 Hardware Required
- 2.3 Hardware Debug Features
- 2.4 Setting Up the SROM Serial Port Connection
- 2.5 Starting and Running the Mini-Debugger
- 2.6 Sample Session on the EB64
- 2.7 Sample Session on the EB64+ and the AlphaPC 6...
- 2.8 Sample Session on the EB66 and EB66+
- 2.9 Sample Session on the EB164
- 2.10 Sample Session on the AlphaPC 164
- 2.11 Sample Session on the AlphaPC 164LX
- 2.12 Onboard Machine Check Handler
- SROM Mini-Debugger Command Set
- Support, Products, and Documentation
- Index
SROM Mini-Debugger Command Set 3–33
User Commands
lo
The loop (lo) command enables or disables looping or repeating of a command by
toggling the loop flag.
Control Flags
Not applicable.
Description
When the loop flag is enabled, examine and deposit commands are repeated until
you stop the looping by pressing a key. This feature is useful for hardware timing of
read and write operations to the external cache or memory system, or anytime a
command needs to be repeated continuously.
The default state is off.
Example
In the following example that shows the dm command, the data pattern is written to
address 500000 continuously until a key is pressed. The em command reads and
displays the data from address 500000 continuously until a keystroke is detected.
SROM> lo
Loop ON
SROM> dm
A> 500000
D> 12345678
! (key pressed)