longer simply added to a list, but intelligently 'merged' (so that
the entire range represented by all directives contains no overlap).
This makes the disassembly a little faster, since it doesn't have to
iterate redundantly. Still TODO in this area is intelligent insertion
for the same type (ie, if inserting in between like blocks, the
blocks should coalesce, instead of being clipped and then a new range
inserted in between).
Added 'loadconfig' and 'saveconfig' debugger prompt commands, which
will eventually access Distella-like config files. No implementation
is present yet.
Added 'listconfig' debugger command, which lists all directives
currently defined by the user, as well as the directives resulting
from a disassembly of a bank (taking into account extra knowledge
that Stella has WRT cached entry points). This command can show
information for a specified bank, or all banks in the cart.
User-defined directives can now be removed; simply issue the same
command that caused an insertion (ie, attempting to insert the same
type and range will remove it instead).
Fixed bug in Distella processing of directives; similar to the
standalone Distella, directives should be processed *before* any
automatic code determination is done.
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from a Distella config file. For now, the commands are only accessible
within the debugger prompt, and can only be added (no removal/editing).
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address space is shown (either $F000 - $F7FF or $F800 - $FFFF).
This eliminates a lot of .byte directives that are invalid in
2K mode anyway, and speeds up the disassembly a little.
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Added 'ramrandom' commmandline argument, used to toggle randomizing or
zeroing or all RAM in the system (both zero-page and SARA).
Disassembler now properly supports all test cases, including rewinding
within the debugger.
Added preliminary support for disassembling from zero-page RAM.
Bumped version # for final release.
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The disassembler now accepts a range of start addresses and remembers
old entry points, so the disassembly becomes more complete each time
the debugger is used.
Changes to address offsets within the same bank are now supported
(ie, changing from $fxxx to $dxxx within the same bank properly
updates the display).
Re-added ability to manually change banks from the debugger prompt
and the disassembly UI. This now works correctly with the Distella
code.
Cleanup of the Cartridge::bank(...) API: if a bank cannot be changed,
the calling code will now know about it. This fixes confusion with
some ROMs, whereby changing a bank in the debugger prompt would print
a success message even if the operation failed.
Note that these changes have broken rewind in the debugger. Actually,
it only exposes problems that the rewind functionality already had :)
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disassembly output. Still TODO is add some visual improvements
(ie, align the cycle counts to not take too much space, etc).
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There's currently a problem in the internal code I have, so I need
to submit in pieces until it's tracked down.
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For now, only the infrastructure is being modified.
Make disassembly output a little nicer by drawing a vertical line
separating disassembly text from the actual raw bytes.
Some changes to the SDL sound code initialization, which will (hopefully)
eventually lead to a fix for those users with ATI video drivers, and
not having sound after the first game has been played.
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or from the user. Before this is done, the parser needs to recognize
variable-length labels (right now, it used fixed spacing and assumes
the largest label is 8 characters).
Fixed bug in Distella; a label was being printed with an incorrect
quote symbol, which would break parsing of that line.
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issue I noticed River Raid, where labels were being generated above
0x10000 (the maximum should be 0xFFFF).
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'Stephen Anthony' (aka, me) in addition to Brad Mott as copyright
holders for Stella. I think I've been with the project long
enough now (almost 10 years) to justify being specifically mentioned
above and beyond 'the Stella Team'.
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to 'resolvedata', since that more accurately describes what it does.
Also, it now accepts arguments as strings (never, always, auto)
instead of 0, 1, 2.
Updated main documentation for changes in OSX port 'basedir'.
Updated debugger documentation for recent command additions, and
provided new snapshots where the UI has changed.
It seems to be getting close to a new release - perhaps this
coming Friday.
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this. That's the main problem with long delays between releases; I
forget exactly what's changed.
Fixed bug in Distella in handling relative addressing. Wraparound
was potentially occuring on a 32-bit integer, which caused a crash
when accessing a 4K array.
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The debugger 'disasm' command now works again for addresses below
0x1000, and it also now correctly accepts the number of lines to
output in the disassembly.
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over onto the opposite side of the screen. Breakpoints set by clicking
in RomListWidget only apply if they've actually been enabled. This
fixes a bug whereby a breakpoint could look like it is enabled when
it really isn't. Related to this, breakpoints cannot be set for
disassembly lines that don't contain a valid address or an empty
bytes area (basically, empty lines and lines containing '.byte' items).
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disassembler. Hopefully this will lead to a new release very soon.
Added 'autocode' commandline argument and associated UI item (in the
RomWidget debugger area), which controls how Distella will use the
'automatic code determination' option. If set to 0/never, this is
completely disabled. If set to 1/always, it is always enabled.
The default is 2/automatic, whereby it is first turned on, and then
turned off if the disassembly doesn't contain the current PC address.
RomListWidget has now been completely reworked, so that it informs
RomWidget of its intent to change breakpoints and patch ROM. If
either of these fail, the action won't be performed, and more
importantly, it won't appear onscreen as if the action has succeeded.
This fixes an old bug whereby patching could fail, yet the onscreen
ROM data was actually changed. Related to this, the list has been
made as efficient as possible, and its contents are never un-necessarily
copied. Also, lines in the disassembly that cannot be modified no
longer show an edit area.
Due to the way the new disassembly works, you can no longer switch between
banks in the RomWidget (Distella would probably fail to disassemble in
such as case).
EditTextWidget can now indicate its contents have changed when adding
text to it.
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This is very useful for conditional re-disassembly, since many bankswitch
schemes consist of ROM only, and once disassembled, cannot possibly have
a different disassembly at some later point. This is mostly done for such
static schemes (2K, 4K, etc), but more work is required for carts with
extended RAM. Basically, the cart knows best how its been accessed, so
it makes sense to have the hints there.
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handling to C++ stringstreams instead of C-style character arrays,
which fixed some segfaults (sprintf is evil).
First pass at tying the number of banks to the disassembly. The idea
is that the startup bank (which is now identified by the cart) always
starts at address at 0xfffc, while the other banks are defined by the
PC at the first time we enter the debugger. This is still a WIP,
since there's no actual checking done yet to see if the current PC
is in the current disassembly.
Added 'ctrlcombo' commandline argument, which completely disables
checking for Control-x key combos. This is useful when playing
2-player games where the 'f', 'r' and 'Control' keys are supposed
to be treated separately. Previously, pressing Control and 'r' or
'f' processed some other action (change framerate, reload rom, etc).
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the debugger commandline are now reflected in most parts of the debugger UI.
Still TODO is have DiStella use those labels in the disassembly, and deal
with the formatting issues this will entail.
Still completely broken are built-in functions, getting an equate address
based on label, and tab-completions.
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correctly. Disabled built-in functions until I get to that area of
code, since I'm tired of seeing an error message every time I test
new changes.
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addresses.
Fixed a bug in processing accumulator-access opcodes in the debugger;
an uninitialized char array was causing a segfault.
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instruction (read vs. write) for those addresses that have different
meanings based on how they're accessed. For now (and probably forever),
this only affects TIA addresses.
These ideas were ported from the old Stella disassembler. Perhaps they
should be ported to distella as well, since it makes for more accurate
results.
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the mouse and the keyboard arrow keys). Still TODO is change the scroll
placeholder text into something that looks a little nicer (perhaps a
graphic arrow or something).
Added output of field header names when using 'listrominfo'. This makes
it very easy to see what each column actually represents.
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controller uses the directional pad and button 'B' as a normal
joystick, but can also use button 'C' as a second 2600 button
(with the logic reversed).
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the RomListWidget instead of being printed to the terminal. There are still
graphical glitches with this, but for a first pass, it's nice to see actual
Distella output in Stella.
Partially working 'disasm' command from the PromptWidget. Currently, it
only disassembles cart address space (aka, 0x1000 or above).
Removed the old disassembly code from CartDebug. Still TODO is fix the
label stuff, both in getting DiStella to use it, and adding/removing
labels. This is greatly reduced now that we only have to worry about
user labels.
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methods from Debugger directly. As well, the start address is now passed
into DiStella::disassemble() directly; decision to start from the reset
vector is done outside DiStella. This is in preparation for starting
the disassembly from any valid address.
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isn't actually sent to the UI yet (it's still printed to the console), but
at least the two parts of the code are now talking to each other. Note
that the disassembly window in the debugger will be empty until I get this
changeover complete. And with that, I'm not feeling well, so I'm taking
the rest of the night off.
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from within Stella (vs. reading ROM data from a file).
Compilation is currently broken.
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parsed into a DisassemblyList structure. For now, this is just being
printed out again. The next change will be to pass this to RomWidget
and have it displayed in the UI.
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output to a specified function instead of the console. The formatting is
also in a very fixed format. That makes the next part easier; parsing
the output into a DisassemblyList structure that Stella can deal with
and show in the RomWidget.
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classes. First off, the distella code has been integrated into a
DiStella class. This code isn't yet tied to the debugger, but it does
at least compile and generate valid output.
The RamDebug class has been replaced by a CartDebug class, which
takes responsibility for the previous RamDebug stuff as well as
things related to Cart address space (read from write ports,
disassembly, etc).
Fixed E7 bankswitching when reading from the write port in the upper
256byte area.
Fixed 'read from write port functionality' in general for all carts
that supported it previously. Basically, if _rwport is enabled, the
address is checked to be an actual read (vs. one that's part of a
normal write cycle), *and* it's actually an illegal access (each
cart/bankswitch type now provides a hint to indicate this condition).
Still TODO is clean up the rework, properly integrate DiStella, and
fix labels and defines (which seem to be completely broken).
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stephena