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Commit Graph

10 Commits

Author SHA1 Message Date
Andy McFadden
30cb96f737 Update Apple II definitions
Picked some names to fill the gaps in the language card I/O
location list.

Tweaked the hi-res sprite sheet slightly.
2020-08-21 20:01:41 -07:00
Andy McFadden
e82dc31da6 Move Disk ][ defs into separate platform symbol file
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.
2020-07-11 13:23:46 -07:00
Andy McFadden
76784848d0 Change Apple Disk ][ I/O defs to constants
The $C0En approach wasn't really working well.  This changes the
addresses to $C08x, and makes them constants so they don't clash
with the LC defs.
2020-03-22 13:18:01 -07:00
Andy McFadden
ecbb01db1f Add Disk ][ I/O locations
Not perfect, but I'm not sure how to do better.
2020-02-18 13:11:13 -08:00
Andy McFadden
7bbccaf71f Minor tweaks
Mark the "info" window as read-only.

When the project closes, clear the contents of the Symbols and
Notes windows.

Clarify some Apple II I/O definitions.
2019-10-21 17:43:40 -07:00
Andy McFadden
4d8ee3fd07 External symbol I/O direction and address mask, part 2
First cut at lookup-by-address implementation.  Seems to work, but
needs full tests.
2019-10-16 14:55:10 -07:00
Andy McFadden
3172ea0b70 Update Apple II data files
Added symbols for the ProDOS 8 global page, as well as some notes
about screen holes.

Also, if a platform symbol has a tag, show it in the Info panel.
2019-10-03 15:18:59 -07:00
Andy McFadden
a4e3680655 Remove some test symbols from Cxxx-IO 2018-10-10 16:41:33 -07:00
Andy McFadden
93b21b16f8 Fix some comments 2018-10-01 15:24:27 -07:00
Andy McFadden
2c6212404d Initial file commit 2018-09-28 10:05:11 -07:00