[Coco] Good Debugging Tool

[tim lindner]

David Gacke <dgacke at ektarion.com> wrote:

> Hi All,
> 
> I'm merrily coding opcodes for my 6809 replacement and am wondering if
> there is some easy way to do a sanity check on what "I" think the
> correct values for all the regs and pc are vs. what the "real" correct
> answer is.
> 
> Is there an emulator/debugger tool that I can shove an image of the CoCo
> ROM into and step thru it from reset?
> 
> I'm sure I'll have bugs. I'm just looking for a good way to find them.
> 
> Thanks for any advice.

MESS inherits the MAME debugger, which is quite good. Watch points,
break points, memory inspection, register inspection, execution dump
(with the option of register dumps), instruction stepping.

The only drawback is you have to compile your own MESS binary with
debugging turned on. But it is worth it.

Here is a screen shot:

http://home.netcom.com/~tlindner/temp/MAMEDebug.png

Aaron Guiles is even working on a replacement for the MAME Debugger:

http://www.aarongiles.com/pix/debugger.gif

But I not sure if it made it into the MESS distribution.

If you decide to go this way, and you a Mac person, I can help you
compile it. If you're a Windows guy, here are some instructions:

http://www.mess.org/mess_compile.htm

-- 
tim lindner
tlindner at ix.netcom.com