mirror of https://github.com/brouhaha/dis6502.git
50 lines
2.2 KiB
Plaintext
50 lines
2.2 KiB
Plaintext
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Some notes about Robert Bond's 'dis' program, Amiga version.
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This is a quick & dirty port of a 6502 reverse assembler I that I had under
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my hand for a long time. I didn't bother optimizing the stuff too much, I
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just wanted to see it working. This is the sort of 'dirty' ports where you
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first compiler the original file, then watch the compiler errors, and fix
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the errors in the file, without looking anywhere else in it. Therefor:
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1) 'dis' requires C:Sort ( too much bother to replace ) & C:Type ( I AM
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lazy!!!)
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2) I still don't understand why are the line numbers needed in the
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c64.predef file. I don't have much UNIX experience, and no experience at
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all with lex. lex code is like chinese to me, but reading the perdef
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I think that the line numbers are ignored and are used only to easily
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identify '.eq' lines.
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3) The program is recursive, too much recursive! the trace routine calls
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itself not only on branches, but every instruction! large stacks ( even
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50K isn't too much for large programs ), are welcomed... I will modify
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this as soon as I'll have time. it should be easy to remove recursion in
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the non branch/jmp instructions. branches must have recursion.
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I also enhanced the original package, and added support for c64 binary file,
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which wasn't there before. ( It had only ATARI load/boot files ). The C64
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file format was much simpler than those other 2 formats. To select C64 file
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format, use the '-c' flag. I also included a c64.predefs file with some C64
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constant addresses. Also, FYI, lex.c was generated on a SUN from lex.l and
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then downloaded to the Amiga. lex.c was also __edited__ before compilation.
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I know that it's a no-no to edit machine-generated files, but it was
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necessary.
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Udi Finkelstein
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10 Glitzenstein st.
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Tel Aviv 64686 Israel
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Phone: 972-3-263-927
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BITNET: finkel@taurus.BITNET ( Best )
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UUCP: ...!uunet!ulysses!attibr!althea!finkel ( Try avoiding this )
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ARPA: finkel%taurus@cunyvm.cuny.edu ( Same as BITNET )
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FIDO: Udi Finkelstein ( At 2:40/117 or 2:40/135
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If you can get there at all!)
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