- update some code to the '5.0' way of doing things
- allow compilation in Linux
- whitespace/tab fixes to match main codebase
- add some extra comments
- test compile under gcc 6 and clang 5, and fix some warnings
Preliminary support for new Harmony/Melody drivers BUS and CDF. Work remains for the 3-Voice Audio, Digital Sample playback, and some additional revisions to the debugger widgets.
autocalculated or fixed. This fixes selecting a scanline with the
mouse in TIA output widget in the debugger.
Made various methods inline for issue #7.
below the current electron beam position.
Fix long-standing bug whereby entering the debugger for the first time
and tracing/scanline advancing, the TIA image was blanked, and didn't
work correctly until you exited and re-entered the debugger.
Minor refactoring optimizations, and renaming of methods.
debugger is currently broken, but at least the code compiles (needed
for the Windows and OSX test releases, as they aren't set up to be
compiled without the debugger.
Introduced Cartridge::initializeRAM() method, to eliminate duplicate
blocks of code in every bankswitch scheme that uses extra RAM.
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in the debugger wasn't actually resetting the bankswitching, since it was
being locked.
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that approach is a bad idea (and using Stella as example code), so it doesn't
make sense to not do something as it's being taught; the correct way.
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std:: functions into BSPF namespace at all. So I removed them, and have the
calls map directly to the std:: versions.
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into the parent dialog box (ie, the entire debugger window), since we
don't want to allow backtick to appear anywhere in the debugger, not
just the prompt.
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"`" key (or equivalent) was being shown in the prompt widget.
Added method stubs for clipboard cut/copy/paste/select. Actually
implementing them will come next.
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Specifically, the stack class now takes a lambda to apply to all elements it
contains, rather than allowing direct access to each element.
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To anyone reading this, Merry (belated) Christmas and Happy New Year!
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of these aren't actually bugs per-se, but are to follow good programming
practices.
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see what errors are present in the code. This is the first pass
in cleaning up the errors it found.
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Changed next version # to 4.6.5; 4.7 will include improved paddle
emulation, but it's not ready yet.
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old RamWidget. Class RawWidget is now an abstract base class
to RiotRamWidget and CartRamWidget, allowing to share quite a lot
of code. In the process, both classes now implement input from
the binary and decimal widgets, not just the DataGridWidget.
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Changed valid() method Serializer to an explicit bool() operator,
to function similar to C++ streams.
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C++11 keyword. This makes developing/maintaining class hierarchies
more manageable.
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For those reading these logs, I hope to get back to Stella development soon.
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Introduce namespace to class MD5, so the method call is now MD5::hash()
instead of simply MD5().
Added C++11 '= delete' constructors to most classes, to more clearly
indicate the intent of the class. Note that this isn't absolutely
necessary, but is considered good form. I will be teaching a C++ class
over the summer using Stella for examples, so it makes sense to follow
the standard and the textbook recommendations :)
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Now that there are no dirty updates, remove redundant calls to draw();
calling setDirty() is now sufficient to get the changes shown in the
next frame. This is also slightly faster, since redrawing is done
only when necessary.
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and joysticks. It's now easier to read/follow, and has less code.
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to learn to read the specs more closely). Changed hotspot change to trigger 3 cycles after
initiated instead of 3 address changes.
Added CartWDWidget debugger class, to view/change cart-specific functionality from within
the debugger.
Still TODO is CartWD patching.
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Renamed 'Vlist' to 'VarList', since it's more descriptive.
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I find the newer syntax more readable, since it acts exactly like
an assignment statement.
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in mind that YACC stuff deals strictly in pointers, and can't be changed).
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I'd hoped to use std::function, but I don't want to dive any further into the
arcane YACC syntax.
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it with the debugger (this eliminates more new's and empties another d'tor.
Re-wrote PackedBitArray to use a bitset instead of home-made code.
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I also love lambdas?
Minor cleanups to other parts of the code (missing virtual, cleanup
d'tors, move methods from public to private, etc).
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and bumped version # to 4.5 for the next release (whenever it
may happen).
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the advantages of C++11 (move semantics, list initialization, etc).
I'd hoped to somehow wrap a vector behind Common::Array and not have
to change the codebase to this extent, but it didn't work out. And
I've since read that it's bad form to extend from std::vector anyway.
This is *THE LAST* bit of work I'm doing with arrays; everything is
now a proper vector.
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lists to the Array class? Completely deleting all that code and
using a std::vector directly :)
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I've found and fixed a few memory leaks. You will need an up-to-date compiler.
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all GUI classes. This makes sense, since the underlying classes
were returning them as references anyway.
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than the desktop.
Some code cleanups; add const and optimize some methods.
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Alt-comboes, as these are easier to remember than function keys.
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keyboard layout. This means that non-US layouts can finally
enter (ASCII-only) text with Alt-Gr key-combos. Because of these
changes, the global debugger keys for rewind/step/trace/scan+1/frame+1
are now the function keys F4 to F8, respectively.
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and hence didn't re-disassemble.
Fixed long-standing bug in the debugger disassembly; addresses marked as $F000
(or equivalent) were never being highlighted in the disassembly view.
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currently in use. Still TODO is activate the 'Commit' buttons, so that
the banks can be changed from the UI.
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since there are issues with mixing overloading and virtual functions.
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or those which implement their own unique scheme no longer have to
implement bank and bankCount; this base class versions will be used
instead.
Removed the debugger 'bank' command, since it didn't work for all cart
types, and is obsolete now that the UI allows to change banks for
all cart types.
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to the DPC+ scheme, so I suspect its omission was an oversight. Other than
the more esoteric types, the only scheme left needing a cartram tab is
DASH, but that one is still in development ...
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the RAM is always mapped into the same place in ROM, the ram grid
now shows addresses with the correct read port address, and
ram labels are properly accessed. In cases where the RAM is hidden
from the 6507 or not mapped into the same place at the same time,
the addresses show actual real addresses of the RAM from the POV of
the cart itself (ie, RAM location zero is labeled 0, not as $1xxx).
This is necessary since quiescent RAM doesn't actually have a 6507
address. Also, labels are disabled in this case.
Fixed bug with incorrect offsets when reading cart RAM labels;
it seems to be a copy/paste issue, since all such methods were
written as if the cart was SaraChip-based.
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This code was originally there for software mode, where it was very
expensive to update pixels, so it was done as little as possible.
However, it was also a bit of a hack, and sometimes interfered with
double-buffered hardware rendering. So now showing the various UI's
will burn slightly more CPU, but will be guaranteed to work under
all conditions.
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snapshot of the TIA image, including partial rendering (if applicable)
and scanline indicator. Previously it only saved the TIA image, which
basically made it useless from the debugger POV.
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and contains only one Objective-C warning (more research required). There
are also some fixes for minor warnings.
There are still some issues, though. First, SDL2.0.3 has to compiled
manually, as the public binaries don't work (this is documented and
a bug reported on the SDL mailing list). Second, fullscreen->window
transition is causing a crash, which I still need to track down.
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for a long time. Changed to unsigned int everywhere, and removed
functions that I will never use (the class originally came from
ScummVM).
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to SDL mod.
Added a hack/fix for Alt-key combos being printed in the debugger
prompt (ie, when stepping though a frame with Alt-f, the 'f' character
was shown in the prompt). This will be fixed when PromptWidget
becomes an EditableWidget (not for the 4.0 release).
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cart RAM tab to the debugger. This is tailored to each respective
cart bankswitch type, allowing much more information to be shown than
you'd see in the normal RAM area.
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which I though a just a one or two-liner equivalent to glReadPixels.
Turns out that SDL2 doesn't return 24-bit RGB data (only 16 or 32-bit),
so the PNGLibrary had to massage the data. In the process, converted
the PNG saving functions to actually use PNG library functions, which
greatly simplified converting packing from 32 -> 24-bit. Historically,
the PNG save functions were written before libpng was a requirement,
so they were hand-rolled. Once libpng was integrated into the codebase,
it didn't make much sense to not use it anymore.
So an expected two-line code fix became this commit ...
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PromptWidget class to use EditableWidget will probably happen after
release 4.0).
All text input now seems to be working as in Stella 3.9.3.
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(specifically, DataGridWidget and RomListWidget are now working).
More work is required for PromptWidget, since it was created before
EditableWidget existed, and hence duplicates a lot of that classes code.
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the old way mixed both single-key events and Unicode input into one
method, and the new way separates them (using a new handleText method).
Currently it seems to be working fine in the ROM launcher (yay!, I
can now quickly jump to ROMs by name again). There are still some
issues in the debugger, which I'll work on next.
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Changed pointers to references in c'tor calls, making things a little safer.
Removed FBSurfaceTIA, since it was tied too closely to SDL itself. Added a
class called TIASurface that is functionally very similar, but is more generic
and accessible by the FrameBuffer directly. Eventually, this class will take
responsibility for all things related to rendering the TIA image (Blargg TV
effects, phosphor mode, etc).
TIA rendering is currently borked; fixes will follow ...
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rectangles. Now that the underlying rendering is hardware accelerated,
this API more closely matches what is actually occurring. As well, it
makes things easier comprehend: 'src' rect is the actual surface data,
and 'dst' rect is its final output onscreen (scaling, etc being applied).
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characters working, so the UI can be used.
SDL Window events are now sent to the EventHandler core. For now, only
the window expose event is handled (redraws window if it's been hidden).
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into FrameBufferSDL2 only. This will make conversion to actual SDL2 code much
easier, since it won't be touching any of the core emulation code in src/emucore.
Next TODO is something similar for EventHandler (which uses SDL heavily and is
too tied to a core class).
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break. First thing to do is update the year. Happy new year to anyone
reading these commit logs.
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software rendering support. I've been wanting to do this for years,
and finally the time has come. So for now, you need OpenGL for Stella
to build and run.
Expect major breakage over the next few months, as I port to SDL2.
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ever want to see the TIA, not the entire debugger area too.
This will be fixed for Stella 4.0, once I remove the @#*%$-ing software
rendering support. That part of the code keeps coming back to haunt me
for years. It will be *SO MUCH EASIER* to deal with these things when
everything is a FBSurface that can be stretched/scaled as necessary.
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of bold and normal fonts within the debugger UI. Because of the # of changes
this requires, this is as far as I'll willing to go with UI configurability.
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I wasn't completely sure how the file was structured, but it's starting to
make a lot more sense now. I think in the end, it will be better to use this
file as much as possible.
Bumped version #, and starting all over again.
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number.name convention (which seem to be pass #'s for DASM). Initially
having this info in Stella was simply visually inconsistent, but now
it also interferes with recompiling when saving the disassembly (IOW,
the data put into the symbol file by DASM can't be fed back into DASM
again in these cases).
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tab area and RAM area now take advantage of extra space.
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to the screen (inactive pixels are 'transparent' in the UI). In the
case where there is only one possible object below the register, a
'blank' uses the underlying colour (ie, in normal priority, a blank
PF is 'coloured' using COLUBK).
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COLUBK instead of always using colour 0 (black). This is more
informative, as it displays how the registers actually work when
being drawn to the screen. Thanks to Tjoppen of AtariAge for this.
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symbol names in the DASM symbol file). This partly fixes a deficiency in
symbol files, whereby two names could have the same address (one has an
address, the other as a constant), and Stella would use whichever one
occurred in the file last.
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extended abilities (see changelog and docs for more info).
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previously on my local system, not in the repo), and fixed some minor
UI layout issues.
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on exit; it attempted to close the debugger dialog instead!
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it was confusing which one was being called.
Fixed output in debugger bankstate info; in some cases, hex numbers were shown
when decimal was required.
Fixed regression wrt the last TIA change (incorrect framerate counter); the
PAL autodetection was failing in certain cases.
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This is the beginning of a major cleanup of the bspf.hxx file, which
has gotten unwieldy over the years.
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bases into a Common::Base class. Previously, this functionality was
spread across several classes, and used different approaches to formatting.
While the code still mixes C++ streams and C-style sprintf's, at least
it will now be easier to modify it all in one place.
Related to the above, added ability to use upper or lower case
characters for HEX output in the debugger. This is toggled by the
new debugger prompt command 'uhex', which is also tied to a new
commandline argument, 'dbg.uhex'.
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the CPU registers (A/X/Y/PS) on ROM load.
Added 'INTIM Clks' to the debugger I/O tab, showing the number of clocks
before the current INTIM value decreases by 1.
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in decimal, not hex.
All DataGridWidgets (ie, most of the inputs in the debugger) have more
strict input filtering, allowing to use $,#,\ specifiers for different
bases, as well as restricting input based on the specifier used (ie, if
you've entered a '\', only '0' and '1' are allowed, etc).
Updated libpng to latest version.
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Cleaned up the class comments wrt ScummVM; the attributions only needed to
be in the base classes, since all the derived stuff was written later.
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Added option to save snapshots using either internal database name
(the default) or actual ROM filename.
Extended FSNode API for parsing filenames and adding/removing extensions,
which was previously being done in different ways throughout the codebase.
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This will eventually grow to include all relevant options in Distella.
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systems, but seems to improve issues on slower computers.
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selection widget to a display of current bank state, taking into
account the more esoteric bank schemes. Currently, some functionality
is disabled/removed for now; I'll work on this for the next commit.
The format for displaying disassembler GFX/PGFX (binary or hex) is now
obeyed in the disassembly file output as well.
Changed various comments/enums/etc referring to 'preliminary' code to
'tentative' code, matching the actual intended meaning and the current
documentation.
Small API change for EditTextWidget; changed method name to setText, since
that's what I keep typing for some reason.
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initial pass of the disassembler. This was required in certain cases,
notably when issuing 'savedis' when the code was currently running from
zero-page.
Fixed missed labels for zero-page RAM when running ZP code.
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to an external file.
- RIOT/TIA mirrors are now used whenever possible. This includes *all*
possible mirrors in the entire 64K address space. This was needed to
make the disassembly byte-exact when recompiling the ROM.
- Disassembly to a file now includes all required defined constants
(RIOT/TIA, non-locatable labels, user-defined, etc).
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listconfig command are now synchronized, and produce the same output.
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for single-bank ROMs, same as disassembly (since the underlying framework
has been modified). Second, it now actually works :) I can't see how it
worked before, and since I didn't get any complaints/reports, I really have
to question how much use this code actually gets.
Still TODO is fix errors in CODE vs. PCODE (preliminary code) (in
the Distella code, we should clearly mark the difference).
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For now (and the next release), filenames are hardcoded to sane defaults.
Eventually, the code may be extended to use BrowserDialog to query the names,
but it's taking much too long to get working, and I want to get a new release
done before the end of May.
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converting StringMap to VariantList. In the process, some of the
code is much cleaner, and the Variant infrastructure allows
work to continue on a more full-featured ContextMenu.
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the Settings class to use Variant. Still TODO is modify various UI elements
that currently accept StringMap to use Variant instead.
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Some cleanup of the various enum's in the UI classes.
Fixed issues with ordering when adding dialog boxes; this fixes a
bug when adding a dialog from another dialogs ::loadConfig(), in
which case the first one is placed below the second and can't be
seen (mostly applies to MessageBoxes).
Fixed bug in handling OSystem::setBaseDir(); if the directory didn't
exist, then the newly created one wouldn't have a slash appended at the
end. This causes all further (sub)directories to be created/named
incorrectly.
Started work on extending BrowerDialog to load files as well as
directories, and to allow editing of the items from within the dialog
itself.
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commit (AR), this one isn't yet fully implemented.
That's it for the bankswitch schemes. Now I can move on to the
remaining items for the 3.9 release.
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how one thing leads to another. This started when I noticed that exiting
the debugger with a context menu still onscreen locked that widget, and
it couldn't be selected again ...
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No extra functionality is present; this will have to wait
until a future release after I have a better understanding
of the AR scheme.
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virtual keyboard added to the UI at some point).
Cleaned up the CheckBoxWidget API, and introduced new checkbox
'contents' that will hopefully more clearly indicate what is going
on (fully drawn square means selected, square with empty circle means
selected by not editable, etc).
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extended into yet another tab, since there's still the need to
show the display bank, frequency bank and DPC Harmony RAM. Or
maybe there isn't a need to see this extra stuff??
Some more cleanups of the graphics/UI API.
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The remainder of this commit is basically some cleanup of the
Widget API, and infrastructure fixes to allow CartDebugWidgets to
have change tracking.
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it only contains the same functionality as F8; it needs to be
expanded to show more DPC-specific stuff.
Updated all schemes that contain a fixed RAM address range
(mostly the Superchip ones) to exclude that range from the
accessible ROM area.
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to erase/load/save the Flash memory in the FA2 scheme (it's stored
in the Harmony cart, but emulated with a file). This is a debugger,
so it might as well have access to all the lower-level stuff in
the cart.
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Harmony flash with hotspot $FF4 is mentioned, but currently
unsupported).
Implemented changing banks for MC scheme (although no test ROMs
exist, so we don't even know if the scheme works).
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don't have any test ROMs to confirm whether the current
bankswitching code even works.
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never actually included info on how to enable/disable it.
StringParser is now width-sensitive, in that it can also split
on a maximum string length. This is useful for making the various
UI items font-size independent, and to flow the text accordingly.
Increased minimum size of debugger window to 1080x720, which allows
things to be laid out a little nicer, and gives some much needed
extra room. Sorry guys, the most common resolution now in use
is 1366x768, so it's time to move with the times.
Cleaned up some of the descriptions in the ROM debugger tab(s).
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a multibank scheme, the tab doesn't allow to change banks,
since the current bank is at address-level resolution, and
it would immediately change back upon the next address change.
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Improved keyboard and mouse navigation for PopupWidget and associated
ContextMenu dialogs.
Tweaked bankswitch autodetection for 29K ROMs; the only possibilities
are ARM (FA2) or DPC+.
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test ROM, and it is extremely basic, I can't be sure how well this
new functionality works.
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esoteric schemes (ie, the ones that no longer follow the '4K per bank'
design). Arguably, this is the entire point of adding the cart-specific
debugger ROM tab; to make it easier to work with such schemes.
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For now, only 4K is shown. Eventually this will be included for all
bankswitch types, whereby the UI will be tailored to the specifics
of each scheme, so that ROM/RAM banks will be able to viewed and
changed more easily.
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debugger. In the process, I had to spend several days extending
the UI/dialog class to actually contain multiple tabs. This was
harder than expected, and it still isn't quite finished. In many
ways, we're beginning to reach the limits of the current code; it
was never designed for a full-fledged, graphically rich UI.
For now the tab is empty, but eventually it will contain general
info about the ROM bankswitch type (size, virtual layout, etc),
but also cart-specific info, including the ability to change
banks, which can be vary greatly among the different schemes.
Eventually, it may even allow to see/modify very cart-specific
info (like display RAM in DPC, etc).
Better handle errors in opening the serial port (AtariVox support)
for Windows and OSX.
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the saved disassembly to be compiled to the exact same binary.
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colour-blind; the old (light) colour was very hard to see. Actually,
I agree with that assessment, even though I'm not colour-blind myself.
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undefined. The rest are defined but illegal, which is different
(mostly because many ROMs released in the past 10 years make
extensive use of illegal opcodes).
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out-of-range labels for cases where a label is in the middle of a
multi-byte instruction (Kool Aid Man), and properly indicates
mirrors of TIA read/write addresses (Meltdown).
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- Removed 'SKIP' directive, since it wasn't implemented anyway, and
I see no way to implement it
- Add 'aflag' setting to diassembly output, matching usage in Distella.
This is needed for diassembly output, otherwise DASM barfs on the code.
- Fixed several long-standing bugs in Distella disassembly wrt ROW
directives and labeling. Previously, the output you see in the debugger
wasn't completely correct, since it wasn't compiling properly in DASM.
- Illegal opcodes are now shown as .byte directives; this allows the code
to compile in DASM.
- Print 16 bytes per line in .byte directive in external disassembly,
same as Distella.
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DiStella works, so you don't have to include a vcs.h file.
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working quite well for a single-bank ROM, but more work is required for
multi-bank. Output is currently sent to the console, as I'm still in
the formatting phase. Saving to a file will be easy once the format
is nailed down.
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matter (since they're updated anyway), but it's more correct to always
set defaults.
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TODOs and pointed out areas where improvements are likely needed,
in preparation for asking for help in the implementation.
Turned off 'resolvedata' in the debugger when disassembly ZP RAM.
It seems to be buggy in certain cases, and it's easier to just
leave it off in that mode, since (a) not many games run from ZP,
and (b) it's only at most 128 instructions.
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state of the registers and messed up further emulation.
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Eventually, this will have to be done for all GUI elements.
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Distella '-r' option (Relocate calls out of address range) to
the disassembler core. Also added UI item to dynamically
change the setting.
Renamed 'resolvedata', 'showaddr' and 'gfxformat' commandline
arguments to start with 'dis', indicating that they're part
of the disassembler.
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option was set, which normally isn't when disassembling standalone
ROMs. As such, the disassembly didn't match standard Distella output.
The 'fflag' and 'rflag' options from Distella have therefore been
integrated, but they're not configurable at this point (hardcoded
to true and false, respectively).
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cases, these archives contain directories named '__MACOSX' which
contain link files that were being erroneously detected as actual
ROMs.
Added FilesystemNode::isFile() method, and updated several places
in the code to use it. Previously, determining whether something
was a file was simply testing if it wasn't a directory, but this
logic isn't always valid (it's possible to be neither a regular
file *nor* a directory).
Bumped version # for RC release. It's getting very close ...
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available, which helps with constant resizes of arrays with a large number
of push_backs. For now, only the ROM launcher and debugger disassembly
really needs it.
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make another pass at getting rid of raw pointers. As I've come
to realize over the years (and in particular with reading the C++11
standard), raw pointers are evil and error-prone. So this fixes
some of them at least.
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in the debugger, and updated the debugger documentation.
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and take 'swapport' and 'swappaddles' settings into account. Next TODO is
add per-ROM settings for specific axis mode.
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debugger before it has been initialized.
Tweaked the format auto-detection by also looking at the TIA scanline
at which drawing first occurs.
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generic than SDL, but less generic than simply using int's for everything.
This will help once we start porting to SDL2, which has an updated keycode
handling system. The plan is that the internal core keyboard stuff is now
insulated from any further changes in SDL.
This also allows eventually adding support for CompuMate controller,
which needs access to keycode names in a generic way.
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Cleaned up the Event object in the EventHander, turning
it into a reference instead of a pointer (pointers are evil).
Minor speed optimization to Keyboard class; the update method
isn't required, since all work is done on the initial write().
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Updated ROM properties for 'Gingerbread Man' homebrew ROM, which
uses the Genesis controller.
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any UI items within the debugger.
Added BoosterWidget UI class for changing BoosterGrip data in
the debugger I/O tab.
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first time that paddle movement is able to be set from within
the debugger!
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I/O tab in the debugger. For now, only joystick is
partly implemented. Eventually, all Stella controllers
will have UI items (where it makes sense), allowing to
completely control input devices from within the
debugger.
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actually change values in the emulation core when clicked.
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I'm still waiting on a test ROM to verify that its output is valid.
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these logs!
Moved TODO and Credits info directly to the webpage, where it will hopefully
be easier to maintain.
Fixed 'crackling' sound when loading a new ROM, introduced with the 3.5
sound restructuring. It looks like stale data was being loaded by the
sound processing callback. As well, moved the computation of certain
division variables from the sound callback to the framerate re-calculator
(where it's recomputed 1/5 of the time or less).
Updated AboutDialog with info about Stella DonationWare status, and active
members of Stella development.
Updated OSX in-app HTML documentation about Stella DonationWare status.
Bumped version # to 3.5.1_svn, and the process starts again.
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BSPF_snprintf instead, which should eliminate any potential
buffer overflows. Also moved from static arrays to stringstreams
where appropriate to make things safer and more C++ like.
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of the C++ standard.
Fixed bug when using snprintf; we must use BSPF_snprintf, since the function
has different names in different OS's.
Optimized loading of PNG images in the RomInfoWidget so that memory allocations
aren't continuously being done. Basically, memory is allocated once and then
only re-allocated if a new image is larger than all previous ones. This can
increase memory use slightly, as the image data stays around between image loads,
and it remembers the largest image loaded. But if you images are all mostly the
same size, it should hurt memory usage too much. And it really helps on certain
systems where repeated (re)-allocations can cause problems.
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Blargg NTSC filtering, but we need to revert to base functionality first.
Cleaned up the debugger API wrt converting values from integers to strings
(and vice-versa). There is now only one method for each of these functions,
rather than several ways to do so. In the process, convert from unsafe
sprintf functions into snprintf (eliminate potential buffer overflows).
The debugger 'print' command now indicates if any assigned label represents
a read-only location (R), a write-only location (W), or a read/write location
(R/W).
Fixed bug in DataGridWidgets (used in debugger ROM and CPU registers), where
scrolling the mouse-wheel would cause a segfault. Scrolling the mousewheel
now changes these items as expected.
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contents. The file was being accessed and read, but the commands it contained
weren't being executed! This bug appeared in April 2010, so it looks like
not many people are using this feature (or at least they're not reporting it).
Cleaned up a few compiler warnings in DebuggerParser class.
Bumped version # for beta release.
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The debugger 'saverom' command now uses absolute filenames, and by default
will save data in the users home directory if a proper path isn't included
in the filename. This fixes a major bug where ROMs were being saved to
the current or application directory, which in some cases were invalid
locations.
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This basically shows a messagebox as soon as the debugger starts,
describing the error and offering the choice to continue debugging
or exiting the ROM entirely.
The DPC+ code now catches fatal errors from the Thumb ARM
emulation code and shows it as a fatal error in the debugger.
This means you no longer need to look at the commandline for
this output, and you immediately know that something has
gone wrong.
Added 'exitrom' debugger parser command, which completely exits
from the debugger *and* the ROM, going back to the ROM launcher.
Cleaned up the API a little, rearranging some classes and
adding references instead of pointers. More work to be done
in this area.
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console (which doesn't exist on every platform). Also use proper C++
stringstreams instead of C-style arrays (which are evil). If an exception
is thrown, start the debugger with a fatal error message. Currently, this
message is simply printed in the debugger info window. Still TODO is add
a dialog to show the entire input from within the UI, as well as a way
to exit the ROM when a fatal error occurs.
Cleaned up the API a little, adding explicit declarations for when a method
can throw an exception. Also merged some empty classes directly into their
header files.
Added functionality to the System class for querying whether it has
been reset while in 'autodetect' mode. Autodect mode is defined as
when Stella starts and temporarily runs to autoconfigure itself.
Some classes (such as Thumb ARM emulation) need to know this, and
suppress debugging output/throwing exceptions when not running in
normal emulation mode.
I hope to have a new release done by the end of this week, or the end
of the month at the latest.
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Updated documentation with info about 2600-daptor, including
usage and its creator. Also included more in-depth explanation
for the various controller types.
Errors from the Thumb ARM emulation code are now caught as exceptions,
and thrown to the parent class instead of calling exit() and simply
crashing Stella. For now, the messages are simply printed and
emulation continues. This will be expanded to show a detailed crash
log in the debugger, and offer the option to exit the ROM.
Removed most of the menus from the OSX port. They weren't being
maintained anyway, and most of them didn't work. I've modelled this
on the way other cross-platform OSX programs work (notably, ScummVM).
Basically, there are menus for exit and help, but otherwise you
should use the menuing system in the application itself.
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multiple concatentation of strings. This should be faster, or at least
lead to less string constructor calls.
Output of 'ROW' directives in the disassembly now shows only 8 items per
line, instead of 16. This allows to see all the bytes without having a
'...' in between. A future release may customize this to the size of the
output area.
Fixed output from debugger 'disasm' command to properly align different
directive types and show GFX and PGFX output.
Bumped state file version to 3.3 final, since there are no further
changes to the code that will break the file format.
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Removed reference to disassembly 'SKIP' command, since it isn't implemented
yet.
Decided on Nov. 15 for the 3.3 release date, and updated all relevant files.
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disassembly. This allows the debugger 'jump' command to be more accurate.
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for these opcodes.
The 'data source' in the debugger CPU area now also shows the SP register,
since it's used for TSX and TXS.
Bumped version # for another test release.
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(ie, each bit now takes priority over ones with lower value). This
doesn't change the processing in any way, but simply makes the bitstring
more accurately reflect what's going on.
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tired of doing it manually every time it changes.
Tweaked the handling of JSR, RTI and RTS commands, so they don't erroneously
mark associated addresses as CODE when in fact they're never actually
executed.
Several parts of the Distella code were marking areas as DATA, even though
it depending on knowing the values for the X and Y registers (which it
doesn't, as it's a static analysis). As such, these areas are now marked
as ROW instead, since that's as precise as a static analysis can do. The
processing blocks are left there, though, in case Distella is improved in
a future release.
All the above changes allow for better disassembly with less
'false positives' (ie, areas marked as CODE or DATA when they really aren't).
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emulation core, and distella). This allows to better see exactly how an
address is marked in the disassembly.
Updated Changelog with changes I forgot that I made (you know it's time
for a new release when you forget what's been added since the last one).
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to use curly braces {} instead of apostrophes. This matches the
functionality from older releases.
Fixed debugger prompt messages to show correct info when opening
various files (config files, autoexec, etc).
The debugger 'type' command now accepts a range of values.
Reverted handling of ROMs that aren't in the internal database;
they're inserted with their extension again, just as in older
releases.
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in the emulation core, since at that point it's unknown what they are.
I suspect there are other places in the core where this is being done,
so I need to go over the entire M6502.m4 file again.
In Distella, when tentatively marking an address range as CODE, stop
when encountering the first address marked as DATA/GFX/PGFX by the
emulation core. This is required since Distella will happily disassemble
CODE as far as possible, but addresses specifically marked as
DATA/GFX/PGFX obviously indicate the CODE range is finished. This is
also why it's so important to correctly mark areas as DATA; the
Distella algorithm depends on accurate information to know when to stop.
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in a consistent way. Directives set manually have top priority, then the
results from a dynamic analysis (aka, from actually running the code), and
finally from a static analysis (aka, Distella itself).
Sometimes Distella will mark a section as CODE even if it hasn't been
marked as such dynamically. This occurs after a relative branch, which
Distella has no idea how to evaluate. It's possible that the code will
be executed eventually, but also that it will never be executed. As such,
these lines are marked with a '*', indicating that disassembly results
are tentative. If you get weird looking disassembly for these addresses,
it's probably a hint that it isn't really code at all.
PC addresses in the disassembly labels are now aligned with labels, and
shown in a lighter color. These can still be toggled on and off.
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to the emulation core. That is, if something is determined to be CODE in
Distella and *not* in the emulation core, then it shouldn't be marked as such.
Note that the disassembly will still show it as CODE; it's just that the core
will not. This fixes issues with manually specifying directives from the
debugger prompt, whereby setting a directive and later turning it off never
actually turns it off (as it was being permanently set).
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detection and marking of those areas into the TIA class itself, specifically
at the location of the write. In other words, there's no longer an IF
statement executed for every STx opcode; the marking is done directly
within the write to GRPx or PFx, so extra code is only executed when
actually storing to those locations.
Fixed several cases of opcodes marking an area as CODE when it should have
been DATA.
Added output to the CPU area of the debugger for displaying the source
address for loading data into the A/X/Y registers. Note that these are
only modified when actual addresses are used, so immediate and zero-page
mode will show addresses as zero (meaning that no address was involved
in retrieving the data).
Tweaked console font to better diffentiate the disassembly output between
graphics for players and graphics for the playfield.
Bumped state file format because of changes to M6502. This means old
state files will be broken.
Bumped version # for next test release.
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previously defined GFX directive is now used for player graphics
only). The 6502 core tracks each of these separately, which provides
for more accurate disassembly.
Modified debugger font and disassembler to show GFX and PGFX with
special characters, instead of using 'X' as Distella does. This also
allows gives much more informative disassembled outout.
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the various header files. Basically, I'm following advice from
Effective C++, and including only what's absolutely necessary. For
definitions that don't need to be included, the designation 'class xxx'
is used instead. This could potentially lead to faster compile times.
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marking them as GFX. Still TODO is somehow differentiate these (based
on block, colour, etc). Also requires testing to see if this slows
down the emulation too much.
Removed un-implemented debugger console commands to query the last
addresses used in the A/X/Y registers, since they're going to be added
to the debugger UI itself in the CPU area.
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values instead of 16-bit.
Fixed compilation of System class and M6502 disassembly tracking when
compiling without debugger support. In this case, the tracking is not
done, and all related operations are completely #ifdef'ed out (resulting
in no extra speed/memory usage at all).
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used as a peek operand). Still TODO is deal with poke areas, which would
be relevant in carts with extended RAM.
The interaction between the internal tracking and Distella is now much
tighter, in that knowledge gained by Distella is used in the core code,
and vice versa. This allows the best of both worlds, where the internal
tracking finds stuff at runtime (that couldn't be found in a static
analysis), and Distella tracks potential paths (that haven't occurred at
runtime yet).
Added 'type' debugger prompt command, which basically queries an address
for its disassembly type (CODE/GFX/DATA, etc).
Added debugger commands to query the last address used in an operation
for various registers, but they're only stubs at the moment.
Updated the bankswitch schemes to deal with accesses in and around the
hotspot areas. Previously, peek accesses in these areas weren't being
recorded as DATA areas.
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realized that not all things that are referenced are actually data; code can be
referenced too.
Implemented handling of 'DATA' directive. This is very similar to 'GFX',
except X's are not shown for the bits, and the disassembled bytes are always
in hex. For now, it can only be activated manually with a cfg command.
Its real value will become apparent once the emulation tracks when
addresses are actually accessed, differentiating from addresses that are
never referenced (ie, 'ROW'). This will fix the current deficiency in
modifying DATA values (it can't be done, since they're packed into 16 bytes per
line and not changable).
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Stephen Anthony