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Shadow
Account closed
Registered: Apr 2002
Posts: 355 |
C64 emu with debugger (or standalone 6502 debugger)?
Is there a C64 emulator that has a built-in debugger? Or can anyone recommend a good (and free!) stand-alone 6502 debugger.
What I want to do is load up my .prg and be able to step through some math routines and see memory, flags etc. as I go along... |
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Skate
Registered: Jul 2003
Posts: 494 |
actually vice has a built-in debugger. but I also recommend:
NoCash C64 Debugger:
http://nocash.emubase.de/c64.htm
Edit: if you see 8086 style opcodes when you open the debugger for the first time, don't be surprised. you can change the disassembler syntax from Options -> Debugger Setup. |
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Shadow
Account closed
Registered: Apr 2002
Posts: 355 |
DOH! Can't believe I missed that there is a debugger in VICE. I have used the cartridge-like 'monitor' features, but never noticed that there were debug functionality as well!
NoCash also seems like a good alternative. Thanks a lot! |
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A Life in Hell
Account closed
Registered: May 2002
Posts: 204 |
I've never managed to get symbols loaded into the vice monitor usefully - is the format required documented somewhere? Am I just incompetent (yes, yes I am!).
As an aside, while I don't have a debugger, I do have a bunch of python scripts and a patched vice that that implement a profiler, which is kind of useful sometimes - will clean these up and release in the next few days if anyone is interested. |
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Devia
Registered: Oct 2004
Posts: 401 |
Quote: I've never managed to get symbols loaded into the vice monitor usefully - is the format required documented somewhere? Am I just incompetent (yes, yes I am!).
As an aside, while I don't have a debugger, I do have a bunch of python scripts and a patched vice that that implement a profiler, which is kind of useful sometimes - will clean these up and release in the next few days if anyone is interested.
The ld65 linker from the cc65 suite can create a VICE label file. Basically all this file contains is a set of "al 000801 .FancyLabel" lines. This file can be loaded from the VICE monitor using:
ll "fullpath/filename" The "" are important and the full path is important unless you set the working dir to where ever your label file is located before starting VICE.
So if you're using ca65 to assemble, remember the -g option:
ca65 -g -o fancydemo.o fancydemo.s And then link it with the -Ln option:
ld65 -Ln fancydemo.lbl -o fancydemo.prg fancydemo.o This will give you a VICE loadable label file.
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A Life in Hell
Account closed
Registered: May 2002
Posts: 204 |
Quote: The ld65 linker from the cc65 suite can create a VICE label file. Basically all this file contains is a set of "al 000801 .FancyLabel" lines. This file can be loaded from the VICE monitor using:
ll "fullpath/filename" The "" are important and the full path is important unless you set the working dir to where ever your label file is located before starting VICE.
So if you're using ca65 to assemble, remember the -g option:
ca65 -g -o fancydemo.o fancydemo.s And then link it with the -Ln option:
ld65 -Ln fancydemo.lbl -o fancydemo.prg fancydemo.o This will give you a VICE loadable label file.
Thanks, I managed to use that to convert the asm I use's labels into vice format - the bit i missed seems to be that they require to be .symbol or else it comes up with an error... weird. But that's okay.
Are they supposed to work on zero page though? because they don't seem to, le sigh! But some is better than none :) |
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Martin Piper
Registered: Nov 2007
Posts: 722 |
I made some changes to ACME to do a similar thing for the VICE debugger. Here is a link to the wiki-section for the binary and sources.
http://codebase64.org/doku.php?id=base:tool_sources#sources_for.. |
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MagerValp
Registered: Dec 2001
Posts: 1078 |
No, vice labels and breakpoints don't work on zeropage (unless it's been fixed in recent versions, it's been a while since I tried).
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mstram
Account closed
Registered: Dec 2013
Posts: 112 |
Quote: No, vice labels and breakpoints don't work on zeropage (unless it's been fixed in recent versions, it's been a while since I tried).
In the interest of updating information, both of those now work in vice 2.4.x (and probably for a "few" versions past too). |
