addresses used as part of code execution (ie, from the PC) during emulation.
This gives Distella much more information than can be determined from a
static analysis alone, resulting in an extremely accurate disassembly.
This also allows to generate very accurate debugger .cfg files.
Not all carts have been ported to this new scheme yet, particularly ones
having extended RAM that can be mapped out dynamically.
Note that this new scheme doubles the amount of RAM used for storing ROM
images, so up to 128KB extra will be used. There's also a small runtime
check for each instruction executed. Preliminary testing doesn't show
any slowdowns, but we'll see how it goes.
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mouse button context menu in the disassembly listing. This is used to
set the default display format for GFX data sections (currently, binary
and hex are supported).
Fixed bug in several debugger input areas to accept the '\' symbol.
This symbol is needed when entering data in binary format (it must
prefix the data if the default base for that field isn't binary).
Added 'jump' debugger prompt command, used to scroll the disassembly
to the given address (or there-abouts, if the address isn't valid).
Editing data in the disassembly now won't cause the display to jump to
the current PC. The display will only move to the PC when it actually
changes.
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window mode. Using modes smaller that 640x480 should now work in
all cases when using the 'maxres' commandline argument. Also, the
lower limit of 320x240 is now strictly enforced in all cases.
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1) Removed all references to FBO in OpenGL. I won't be taking this
path, and will wait until SDL 2.0 integrates it directly. In fact,
most of the OpenGL TV filters will disappear in the next release, to
be replaced with Blargg NTSC filtering.
2) Defined the remaining color constants in OSystem.
Re-added showing the results of parsing debugger script commands
in the prompt.
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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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The descriptions for the debugger commands are more streamlined
and better explained, and are neater when output.
Added 'cls' debugger command, which actually isn't for the debugger
at all, but for the prompt. This erases all showing text and history.
Removed 'bank' debugger command, since it was already removed from
the RomWidget UI.
Removed 'listwatches' debugger command, since it wasn't implemented
anyway. Besides, any watches are printed on every command access,
so it was pointless to have another function to do it.
Removed 'poke' debugger command; 'ram' and 'rom' do the same thing.
Fixed bugs in 'function' debugger command; it now correctly adds
functions without crashing. Related to this, added 'listfunctions'
and 'delfunction' debugger commands for user-defined commands.
Fixed bug in completions for functions; it was including user-defined
functions twice.
Some general code cleanups in DebuggerParser (use ostringstream
instead of constantly creating new strings) and Expression
classes (make some methods const, for safety).
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the completion now includes functions (built-in and user-defined).
Cleaned up some more of the debugger documentation, mostly
related to tab completion.
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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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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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The license file is actually named 'License.txt', not 'license'
The 'Stella Team' has a capital T, not lowercase.
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in NTSC.
First pass at disassembly of ZP RAM in the debugger UI. For now, the
entire range is disassembled, with no regard for alignment (so the PC
won't necessarily always line up with the disassembly). Also, changes
to RAM don't yet trigger a re-disassembly.
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class reworking. Serializer class now handles read/write of state from
files as well as in-memory streams. As a result, Deserializer class has
been removed.
Added state rewinding to the debugger. For now, this is limited to 100
levels of undo, with a new state generated each time a step/trace/frame/
scanline advance is performed. The undo level is 'rolling', in that it
remembers the last 100 levels (so you lose the oldest states when you
start adding more than 100). For now, this is tied to the 'Alt-r' key
in the debugger. Still TODO is add a button for it, and clean up some
TIA output issues when rewinding.
Added support for 6K version of Supercharger ROMs (this fixes issues
with the 6K version of Cubis).
Cleaned up the Serializable infrastructure, making sure that all
classes that need to implement it actually do so now.
Fixed issue with editable widgets in the UI, where pressing Enter
on the keypad wasn't actually being registered.
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emulation when performing 'illegal' HMOVEs (aka, when modifying the HMxx
registers within 24 CPU cycles of HMOVE).
All tweaks for illegal HMOVEs have been removed; and all ROMs that
previously needed those tweaks are now working correctly. Several other
ROMs are fixed as well, including Bumper Bash and Pole Position.
As this is WIP, there is also some breakage:
1) Cosmic Ark 'TIA confusion mode' effects aren't complete; the
movement is correct, but the missile widths aren't corrected yet.
2) Performing a write to NUSIZx while a player is still drawing
isn't complete. This breaks several ROMs that worked before, such
as Galaxian and Space Instigators.
3) Writes to RESPx aren't complete yet, especially if they're
combined with an immediate write to NUSIZx.
Most of the ideas (and some code) for these changes comes from
contributions to MESS and EMU7800. Where applicable, permission
was obtained from the original author to use the code/ideas.
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the debugger RAM UI. A scrollbar is now present, which can scroll
through each 128 byte 'bank'. Labels indicate the current readport,
so you can distinguish between different areas of RAM. For now,
F4SC, F6SC, F8SC, and FASC have been converted, but I'm looking into the
other schemes now.
The RAM UI takes care of all read/write port issues. From the POV of
the UI, the RAM can be treated as zero-page; translation is done
behind the scene. Searching/comparing and change-tracking are also
supported.
The 'ram' command in the debugger prompt now reflects all RAM, and
readport/writeport addresses are shown, making it easier to use the
command withot having to look up the offsets.
Debugger width has been bumped to 1050 pixels wide to accomodate the
new functionality. We'll see how much trouble this causes ...
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stephena