Sometimes you just want to turn cycle counts on for a bit, and going
through app settings is tiresome. Now there's a toolbar checkbox
for it. The icon isn't ideal, but it'll do.
Consider:
LDA $00 loads a value from address $00
LDA $00,X might load from $00, or might not
LDA ($00),Y dereferences $00 as a 16-bit pointer
LDA ($00,X) dereferences a pointer, not necessarily from $00
When perusing the cross-reference list, it's useful to be able to
tell whether an instruction is accessing the location, using it as a
base address, or deferencing it as a pointer. We now show "ptr" in
the list for pointer dereferences. (We already showed "idx" for
indexed accesses.)
The "show cycle counts in comments" setting is the only one that
affects both the on-screen display and generated source code. This
felt a little weird, so it's now two independent settings. This
also provided an opportunity to move it to the initial tab, so it's
easier to toggle on and off. Overall it feels less confusing to have
two settings for essentially the same thing, because code generation
is distinct from everything else.
The "spaces between bytes" setting was moved to the Display Format
tab, which seems a better fit.
Documentation and tutorial have been updated.
Also did a little bit of cleanup in EditAppSettings.
- Added SOS parameter block formatting.
- Normalized SOS call names to values in SOS Reference Manual.
- Added SOS call error code constants.
- (from robjustice) Added more to A3-IO.sym65.
Also, rearranged the ProDOS code slightly.
(issue #85)
Added explicit widths to the 6502 vectors.
Two changes to Apple II hi-res visualization:
(1) Allow the row stride to be any value >= 1. This is useful
when data is stored in column-major order, i.e. it's a two-byte-wide
shape, with all of the data for the first column stored before the
data for the second column. (Set the row stride to 1, and the
column stride to the bitmap height.)
(2) Modify the layout of grids (sprite sheets and fonts), so that
we're closer to square when the item counts is low. Otherwise the
thumbnail just looks like a dashed line. (This one is strictly
cosmetic.)
Added a bunch of Applesoft entry points, and updated the F8ROM
definitions.
Added a visualizer for Applesoft shape table shapes that are not part
of an actual shape table.
This experimental feature applied platform symbols to the project,
setting labels where the platform symbol's address matched an internal
address. The feature now applies project symbols as well, and has
been renamed to "apply external symbols".
We now report the number of labels set.
First, make the per-segment comments and notes optional.
Second, add an "offset segment by $0100" feature that tries to shift
each segment forward 256 bytes. Doing so avoids potential ambiguity
with direct page locations.
The 20212-reloc-data test no longer has the per-segment comments.
The "smart" PLP handler tries to recover the flags from an earlier
PHP. The non-smart version just marks all the flags as indeterminate.
This doesn't work well on the 65816 in native mode, because having
the M/X flags in an indeterminate state is rarely what you want.
Code rarely uses PLP to reset the flags to a specific state, preferring
explicit SEP/REP. The analyzer is more likely to get the correct
answer by simply leaving the flags in their prior state.
A test case has been added to 20052-branches-and-banks, which now has
"smart PLP" disabled.
Long operands, such as strings and bulk data, can span multiple lines.
SourceGen wraps them at 64 characters, which is fine for assembly
output but occasionally annoying on screen: if the operand column is
wide enough to show the entire value, the comment column is pushed
pretty far to the right.
This change makes the width configurable, as 32/48/64 characters,
with a pop-up in app settings.
The assemblers are all wired to 64 characters, though we could make
this configurable as well with an assembler-specific setting.
Some things have moved around a bit in app settings. The Asm Config
tab now comes last. Having it sandwiched in the middle of tabs that
altered the on-screen display didn't make much sense. The Display
Format is now explicitly for opcodes and operands, and is split into
two columns. The left column is managed by the "quick set" feature,
the right column is independent.
Another chapter in the never-ending AppDomain security saga.
If a computer goes to sleep while SourceGen is running with a project
open, life gets confusing when the system wakes up. The keep-alive
timer fires and a ping is sent to the remote AppDomain, successfully.
At the same time, the lease expires on the remote side, and the objects
are discarded (apparently without bothering to query the ILease object).
This failure mode is 100% repeatable.
Since we can't prevent sandbox objects from disappearing, we have to
detect and recover from the problem. Fortunately we don't keep any
necessary state on the plugin side, so we can just tear the whole
thing down and recreate it.
The various methods in ScriptManager now do a "health check" before
making calls into the plugin AppDomain. If the ping attempt fails,
the AppDomain is "rebooted" by destroying it and creating a new one,
reloading all plugins that were in there before. The plugin binaries
*should* still be in the PluginDllCache directory since the ping failure
was due to objects being discarded, not AppDomain shutdown, and Windows
doesn't let you mess with files that hold executable code.
A new "reboot security sandbox" option has been added to the DEBUG
menu to facilitate testing.
The PluginManager's Ping() method gets called more often, but not to
the extent that performance will be affected.
This change also adds a finalizer to DisasmProject, since we're relying
on it to shut down the ScriptManager, and it's relying on callers to
invoke its cleanup function. The finalizer throws an assertion if the
cleanup function doesn't get called.
(Issue #82)
Changed "Use Keep-Alive Hack" to "Disable Keep-Alive Hack" to emphasize
that it defaults to enabled. Added a menu item for "Disable Security
Sandbox". Added a warning to both that tells the user that they must
reopen the current project for the change to take effect.
Note neither of these is persisted in app settings.
The new name is more indicative of the purpose of the directory.
Updated the docs to point out that you can delete the contents any
time you want, so long as SourceGen isn't running at the time.
Also, change the default column widths for the exporter.
On an Apple IIgs, the memory-mapped I/O locations are actually in
bank $e0, shadow-copied to bank $00. This adds a copy of the
relevant definitions from Cxxx-IO.sym65, with the addresses in bank
$e0 and "_GS" appended to the labels.
This is now included by default for the Apple IIgs system defintions.
(I thought about just adding them to Cxxx-IO.sym65, but then they
pollute the namespace for 8-bit systems. Stripping them out at run
time got a little complicated because the platform symbols are only
loaded once, and we'd have to reload them every time the CPU definition
changed. Further, there are a few aliases provided as constants, and
constants are allowed to be 32 bits on all systems, so those can't be
stripped. Rather than defining a new definition I figured it was
just easier to have a second file. Maintenance shouldn't be too taxing,
as definitions for 40-year-old machines don't change all that often.)
(I also thought about trying to make the address mirroring stuff work
for me here, but that would result in accesses being made to the
canonical address with an offset of +$e00000, which looks awful.)
The Disk ][ I/O locations are generally accessed as an offset, using
something like "LDA $C08n,X". However the range from $C080-C08F is
already used for language card in slot 0. SourceGen doesn't have a
way to distinguish between indexed and direct accesses, and even if
it did there's no way to separate one peripheral card from another
without knowing the contents of the CPU register.
As a workaround, the Disk ][ definitions are now in a separate symbol
file. When loaded, the definitions replace the base slot 0 equates.
I figure Disk ][ accesses are more common than language card
manipulation, so I'm making it a default for new projects. Existing
projects that reference the Disk ][ symbols (which existed, but as
constants) will need to be updated to include the new .sym65.
When we have relocation data available, the code currently skips the
process of matching an address with a label for a PEA instruction when
the instruction in question doesn't have reloc data. This does a
great job of separating code that pushes parts of addresses from code
that pushes constants.
This change expands the behavior to exclude instructions with 16-bit
address operands that use the Data Bank Register, e.g. "LDA abs"
and "LDA abs,X". This is particularly useful for code that accesses
structured data using the operand as the structure offset, e.g.
"LDX addr" / "LDA $0000,X"
The 20212-reloc-data test has been updated to check the behavior.
Implemented "smart" PLB handling. If we see PHK/PLB, or 8-bit
LDA imm/PHA/PLB, we create a data bank change item. The feature
can be disabled with a project property.
On the 65816, 16-bit data access instructions (e.g. LDA abs) are
expanded to 24 bits by merging in the Data Bank Register (B). The
value of the register is difficult to determine via static analysis,
so we need a way to annotate the disassembly with the correct value.
Without this, the mapping of address to file offset will sometimes
be incorrect.
This change adds the basic data structures and "fixup" function, a
functional but incomplete editor, and source for a new test case.
The Absolute Indirect and Absolute Indirect Long addressing modes
(e.g. "JMP (addr)" and "JMP [addr]") are 16-bit values in bank 0.
The code analyzer was placing them in the program bank, which
meant the wrong symbol was being used.
Also, tweak some docs.
Similar to the ProDOS 8 formatter, but slightly more complex due
to the variable-length parameter block layout.
Also, added Orca shell call numbers to the list of constants.
This was a relatively lightweight change to confirm the usefulness
of relocation data. The results were very positive.
The relatively superficial integration of the data into the data
analysis process causes some problems, e.g. the cross-reference table
entries show an offset because the code analyzer's computed operand
offset doesn't match the value of the label. The feature should be
considered experimental
The feature can be enabled or disabled with a project property. The
results were sufficiently useful and non-annoying to make the setting
enabled by default.
Code generated for 64tass was incorrect for JSR/JMP to a location
outside the file bounds. A test added to 20052-branches-and-banks
revealed an issue with cc65 generation as well.
The handful of 6502-based Atari coin-op systems were very different
from each other, so having a dedicated entry doesn't make sense.
Also, enable word-wrap in the New Project text box that holds the
system description.
It's nice to be able to save images from the visualization editor
for display elsewhere. This can be done during HTML export, but
that's inconvenient when you just want one image, and doesn't allow
the output size to be specified.
This change adds an Export button to the Edit Visualization dialog.
The current bitmap, wireframe, or wireframe animation can be saved
to a GIF image. A handful of sizes can be selected from a pop-up
menu.
If you double-click on the opcode of an instruction whose operand is
an address or equate, the selection jumps to that address. This
feature is now available in the Navigate menu, with the keyboard
shortcut Ctrl+J.
While testing the feature I noticed that the keyboard focus wasn't
following the selection, so if you jumped to an address and then
used the up/down arrows, you jumped back to the previous location.
(This was true when double-clicking an opcode to jump; it was just
less noticeable since the next action was likely mouse-based.) This
has been fixed by updating the ListView item focus when we jump to a
new location.
See also issue #63 and issue #72.
Added a visualizer for the CHR ROM pattern tables, and a semi-useful
visualizer for tile grids.
Also added a few chars in an 8x8 font that visualizers can use to
label things.
Sometimes it's useful to know whether an address referenced by a
function is a direct access, or is being used as a base address.
(I'm somewhat undecided on this one, since it clutters up the list
a bit. Giving it a try.)
SourceGen Edit Commands is a feature that allows you to generate
commands into a file and have SourceGen apply them to the current
project. I'm not expecting this to be used by anyone but me, so
for now I'm just adding an entry to the debug menu that can read
comments out of a file.
Also, fixed a bug in the re-centering min/max code that prevented
it from working on trivial shapes.
Also, renamed the atari-avg visualizer to atari-avg-bz, with the
expectation that one day somebody might want to create a variant
for newer games.
This converts AVG commands to wireframes. We don't try to track
color or intensity. (This is a disassembler, not a graphics
converter; perfection is not required.) The various rotation and
animation options are still enabled, though they're not terribly
useful for this.
Commands that are meant to be used in series, such as font glyphs,
tend to use (0,0) as their left edge and baseline. This puts the
shape in the upper-right corner of the thumbnail, which makes
everything smaller. The change adds a "re-center" option to the
wireframe renderer that computes the visible bounds and adjusts
the coordinates so that the center of the object is at (0,0) for
display.
- Freeze Note brushes, so HTML export doesn't blow up when it tries
to access them.
- Add Ctrl+Shift+E as keyboard shortcut for File > Export.
- For code/data percentage, count inline data as data.
- Tweak code/data percentage text.
- Document Merlin32 '{' bug.
- Tweak tutorial text.
There's no "standard" coordinate system, so the choice is arbitrary.
However, an examination of the Transporter mesh in Elite revealed
that the mesh was designed for a left-handed coordinate system. We
can compensate for that trivially in the Elite visualizer, but we
might as well match what they're doing. (The only change required
in the code is a couple of sign changes on the Z coordinate, and an
update to the rotation matrix.)
This also downsizes Matrix44 to Matrix33, exposes the rotation mode
enum, and adds a left-handed ZYX rotation mode.
This does mean that meshes that put the front at +Z will show their
backsides initially, since we're now oriented as if we're flying
the ships rather than facing them. I considered adding a 180-degree
Y rotation (with a tweak to the rotation matrix handedness to correct
the first rotation axis) to have them facing by default, but figured
that might be confusing since +Z is supposed to be away.
Anybody who really wants it to be the other way can trivially flip
the coordinates in their visualizer (negate xc/zc).
The Z coordinates in the visualization test project were flipped so
that the design is still facing the viewer at rotation (0,0,0).
