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The following Forth words can be used for debugging:
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debug <xt> - Mark word for debugging
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debug-off - Unmark all words for debugging
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resume - Return from subordinate Forth interpreter
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The source debugger also implements the following commands when it has been activated:
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Up - Unmark current word for debugging, mark parent and continue
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Down - Mark next word for debugging
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Trace - Continue execution until end of word displaying
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Rstack - Display contents of the Rstack
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Forth - Launch subordinate Forth interpreter
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linefeed parse cr " platform-boot" $find if
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2drop cr " Booting " type type cr " ... not supported on this system." type cr
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Stepper keys: <space>/<enter> Up Down Trace Rstack Forth
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00000000ffe26b08: linefeed ( a )
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00000000ffe26b10: parse ( ffec6e24 0 )
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00000000ffe26b20: (") ( ffec6e24 0 ffe26b30 d )
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00000000ffe26b40: $find ( ffec6e24 0 ffe31710 ffffffffffffffff )
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00000000ffe26b48: do?branch ( ffec6e24 0 ffe31710 )
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00000000ffe26b58: execute [sparc64] Booting file 'cdrom' with parameters ''
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Not a bootable ELF image
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Not a Linux kernel image
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Not a bootable a.out image
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Loading FCode image...
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00000000ffe26b60: dobranch ( Empty )
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00000000ffe26bf8: (semis)