in RAM tab from "~" to "Neg". ~ is the invert/complement operator in C,
not negation. I thought about using a minus sign, but it's visually too
similar to the -- for decrement...
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is currently somewhat broken, and I'm thinking this may be related to the
mysterious OpenGL Linux problems as well.
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code than the current line.
On ROM load, we replace the file extension with .sym and attempt to load
that as a symbol file for the debugger. No harm is done if the file is
missing.
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buttons to the RamWidget. They operate on the currently selected memory
location.
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the frame by 1 can be very useful, in that you can change a memory location,
do a frame advance, and then see any results graphically.
Eventually the trace and step will work the same way, and show changes
to the scanline as it's being drawn.
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of Stella. It defaults to true/on, so if you don't want centering, use
'-center false' on the commandline at least once (or edit the config file).
Some more work on the RamWidget and ByteGridWidget. Entering values in hex
now works correctly, and 128 byte RAM area is now updated.
More work on the automatic updating of the tabs. Tabs are now updated when
debugging mode is entered, or when a new tab is selected.
Shortened the width of the debugging tab area and added an area for commonly
use actions/buttons on the right. Currently it contains 'Step' and 'Trace'
buttons.
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now: set/clear a breakpoint, clear all breakpoints, list breakpoints
(including labels in the output!). The 6502 no longer gets "stuck" on a
breakpoint if you quit the debugger while the current PC is a breakpoint.
Some work on the prompt console. The CPU state information shouldn't be
stale any more.
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may not be able to add column labels because we need the vertical space
for buttons. Also, the ByteGrid is now drawn correctly.
Added initial infrastructure for a tab to reload itself, either on command
or when a new tab is selected.
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rather than the result of each command. This makes breakpoints a little
nicer (you see the state as soon as you hit the breakpoint).
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directly.
Updated M6502 classes to call Debugger::start when a breakpoint is hit.
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clears breakpoints, and the 6502 core emits a "hit breakpoint" message
to standard error when it sees a breakpoint. Still TODO is to figure out
how to enter the debugger from within the 6502 core! (Stephen?)
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color; this will have to change. This makes it much easier to navigate
with the keyboard, since it's now easy to see which widget you've tabbed to.
Added some copyright stuff to the debugger classes.
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Debugger, which gets used by both DebuggerParser and D6502, but
neither one keeps a pointer to it permanently.
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Still TODO is somehow draw around the currently active widget,
to show which widget is actually active.
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CVS). This means you can now edit the contents of a ListWidget, and
do something with those new contents based on the signal that's emitted.
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is working except for changing values (but you can still use the RAM tab
to do that).
Basically, the rules are as follows:
1) Only works on decimal input for now.
2) Search with empty input returns all addresses (128 bytes).
3) Comparing a value after a search inspects the current result set
for the given value.
4) Compare can make use of 'comparitive' operators '+' and '-'. If
specified at the start of input, they search by offset.
Typical uses are as follows:
1) Search for a '3', then compare to a '2'. This finds the memory location
that at first contained 3, then later changed to 2 (maybe you lost a life or
something).
2) Search for all values (leave input blank), then compare to '-1'. This
finds all memory locations that have decreased by 1 (useful when you don't
know where to start).
I guess after this, Stella will officially be banned from hi-score contests :)
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the 'Tab' key, though.
Fixed Unicode issues whereby modifier keys couldn't be used as gaming keys.
Made the 'Left Control' key be one of the defaults for 'Player 1 Fire'. The
other two are 'Joystick 0, button 0' and 'Space' key.
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case-insensitively!
We look for labels *first*, so if there were a label "aa", it'd
be impossible to input the hex value "aa" (the label would take
precedence). This doesn't matter for now, since the labels are hard-coded
and none of them conflict with anything, but in the future we'll be
loading symbol files... even then, I don't think anyone's dumb enough
to create a label that looks like a hex value, but it could happen...
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perfect: it doesn't take into account the extra cycles added by things
like taking a branch or crossing a page boundary. However, it's still
somewhat useful and *dead* simple to implement this way.
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location for a certain value (ie, finding out which location holds # of lives).
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contained in the Debugger class methods, since they need to be accessible
from both the console and the GUI code.
Implemented console commands for dumping RAM (ram) and TIA (tia), and
implemented the console 'quit' command (it returns to emulation mode).
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The "trace" command is now implemented (though it doesn't skip over
JSR's like it's supposed to yet, so it does what "step" will do).
After each command, we now emit the values of all the CPU regs and a
disassembly of the next instruction, like gdb and good old DEBUG.COM do.
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moved. That means you can click on the arrows in a scrollbar, and keeping
the button pressed will keep clicking the arrows.
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Dialog. This was necessary since it seems Dialogs can't contain other
dialogs in the GUI core.
Added keyboard navigation to the TabWidget class. For now, it's only
enabled for the Debugger. Ctrl-Tab/Shift-Ctrl-Tab switches to the
next/previous tab (respectively), and Tab/Shift-Tab switches to the
next/previous widget in the current tab.
There's still a bit of work to do, but the infrastructure is there.
That's it, I'm taking the night off, because this deceptively simple
concept has taken about a day to implement ...
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to a TabWidget and PromptWidget, and it's going to take some time.
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command that works as yet is "quit", and it doesn't actually quit
anything :)
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urchlay