Keil MCB251, User Manual

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MCB251 Evaluation Board User’s Guide 49
Chapter 5. Using the 251 Monitor
The MCB251 comes ready-programmed with the Keil 251 monitor (MON251).
The monitor programmed in the Monitor EPROM is setup to communicate at
57,600 baud using the EXT_RS232 interface and 19,200 baud using the
INT_RS232 interface with a 12MHz oscillator.
You may use the MON251 DOS terminal program (MON251.EXE) or the
dScope for Windows debugger/simulator to quickly download and test your
programs.
MON251 Terminal Program
The MON251 terminal program communicates with the 251 monitor using one
of your PC’s serial ports. MON251 lets you:
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Display the contents of the 251’s memory areas in ASCII and hexadecimal,
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Interactively change memory contents,
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Display and change register contents,
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Initialize memory with constant values,
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Disassemble the code area,
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Assemble in-line code,
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Run programs with breakpoints in real-time,
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Create up to 50 program breakpoints,
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Single-step through your program,
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Step over subroutines,
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Upload and download Intel HEX files and OMF-251 object files,
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Display an online command help menu.