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1 191 dgisselq
#Zip Debugger
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This directory contains the Zip System Debugger.  If you wish to use it,
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you'll need to define something that implements the DEVBUS interface,
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as found in devbus.h.  Basically, the debugger expects to interact with the
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Zip System across a 32-bit bus.  Since this interaction is hardware system
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specific, the implementation for your system isn't provided here.
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If you are wondering what the Zip System Debugger looks like, you'll find
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that it works in a fashion very similar to the bench test program zippy_tb
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found in the bench/cpp directory.  The big difference is and will be that
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zippy_tb allows clock for clock testing, whereas the debugger allows
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instruction to instruction testing.  There isn't  supposed to be any difference
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between the two, but there may be.  This is why I run the zippy_tb program:
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to find errors in the CPU, whereas a normal debugger is supposed to find
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errors in the user program.
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Now that I have break point functionality in the CPU, I hope to add
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breakpoints to the debugger.
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Contact me if you need help building such a capability for your system.
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My current implementation transforms a UART signal into 32-bit wishbone
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bus interactions which then support this CPU.
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