This warns when the link table has an entry but the contents cannot be
read.
For example, Atlach-Nacha installs only GA.ALD on the hard drive and
read GB.ALD directly from the CD-ROM. This warning message prompts the
user to copy GB.ALD to the game directory.
This fixes https://github.com/kichikuou/xsystem35-sdl2/issues/45.
The behavior when the contents of link table differ between ALD volumes
is different between System 3.8 and System 3.9, and System 3.9 uses the
link table of the first volume. The MangaGamer version of Rance 5D
depends on this behavior.
As far as I know, the only game that depends on the System 3.8 behavior
is Child Assassin (in Alice CD 2.50). Considering the additional
complexity, we do not implement switching to the old behavior.
When contents of the index table differ between ALD files, System3.x
uses information from the file containing the entry.
For example, if link_table[k] in SA.ALD is { file_nr = 2, ptr_no = 10 }
and link_table[k] in SB.ALD is { file_nr = 2, ptr_no = 11 }, the entry
body is in SB.ALD, so ptr_no = 11 should be used.
CA_G*.ALD of Child Assassin has this issue.
If -debug option is specified, xsystem35 enables built-in debugger. It
optionally loads debug information from *SA.ALD.symbols file (generated
by xsys35c), and drops into a debugger REPL.
Currently the debugger supports:
- Simple breakpoints
- Backtrace
- Single-step execution (step into / step over)
- Printing variables
Also, when the debugger is enabled SIGINT breaks execution and enters a
REPL.
kichikuou