Sharp mz-800 Owner's Manual page 167

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8.3 Starting the ROM Monitor
When you turn on the power to the MZ-800, you will see the following screen.
Make ready CMT
Please push key
C: Cassette tape
M: Monitor
Press the [mM] key to start the monitor. The screen will then change and appear as follows.
** MONITOR 92Z-504M **
*
The asterisk (*) on the second line is called the monitor prompt, and asks you to enter a monitor
command.
The monitor commands are explained in Section 8.4.
8-4