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Andy McFadden 9c3422623d External symbol I/O direction and address mask, part 1 
Memory-mapped I/O locations can have different behavior when read
vs. written.  This is part 1 of a change to allow two different
symbols to represent the same address, based on I/O direction.

This also adds a set of address masks for systems like the Atari
2600 that map hardware addresses to multiple locations.

This change updates the data structures, .sym65 file reader,
project serialization, and DefSymbol editor.
2019-10-15 19:12:57 -07:00
..
Apple Invoke extension scripts when labels they care about change 2019-10-13 18:32:53 -07:00
Atari External symbol I/O direction and address mask, part 1 2019-10-15 19:12:57 -07:00
Commodore Add a C128 Kernal entry point list 2018-10-11 10:46:47 -07:00
Help Invoke extension scripts when labels they care about change 2019-10-13 18:32:53 -07:00
Nintendo Initial file commit 2018-09-28 10:05:11 -07:00
TestData Initial file commit 2018-09-28 10:05:11 -07:00
ExportTemplate.html Make links less distracting in HTML output 2019-09-22 16:45:08 -07:00
LegalStuff.txt Initial file commit 2018-09-28 10:05:11 -07:00
README.md Add default text encoding mode to system definition 2019-08-14 18:03:40 -07:00
RuntimeData.csproj Initial file commit 2018-09-28 10:05:11 -07:00
SGStyle.css Make links less distracting in HTML output 2019-09-22 16:45:08 -07:00
SystemDefs.json Optionally treat BRKs as two-byte instructions 2019-10-09 14:55:56 -07:00

README.md

Runtime Data

Symbol files and analyzer scripts are split into directories by platform manufacturer.

The Visual Studio project (RuntimeData.csproj) exists so you can edit scripts with IntelliSense and error highlighting. Everything here is distributed as source, not in compiled form; all compilation occurs at run time.

SystemDefs.json

This file defines the systems available in the "new project" screen. The following fields are mandatory:

  • Name - Short name that identifies the system.
  • GroupName - Short string used to group common items together in the UI.
  • CPU - Type of CPU used. The string must be part of the known set (see CpuDef.cs)
  • Speed - Clock rate, in MHz, of the CPU on the system. When multiple speeds are possible, use the most common, favoring NTSC over PAL.
  • SymbolFiles - List of platform symbol file identifiers (see below).
  • ExtensionScripts - List of extension script file identifiers (see below).
  • Parameters - List of optional parameters (see below).

The currently-supported parameters are:

  • load-address=<addr> - Specify the initial load address. The default is 0x1000.
  • entry-flags=<flag-set> - Specify the processor status flag values to use at entry points. This is intended for use on the 65802/65816, and may be one of "emulation", "native-short", and "native-long". The default is "emulation".
  • undocumented-opcodes={true|false} - Enable or disable undocumented opcodes. They are disabled by default.
  • first-word-is-load-addr={true|false} - If true, the first two bytes of the file contain the load address.
  • default-text-encoding=<mode> - Specify default character encoding. Use "c64-petscii" for PETSCII. The default is low/high ASCII.

All of these things can be changed after the project has begun, but it's nice to have them configured in advance.

SymbolFiles and ExtensionScripts use file identifiers, which look like "RT:Apple/ProDOS8.sym65". The "RT:" means that the file lives in the RuntimeData directory, and the rest is a partial pathname. Files that live in the same directory as the project file are prefixed with "PROJ:". All symbol files and extension scripts must live in the RuntimeData directory or project file directory, or they will not be loaded.

All "RT:" identifier paths are relative to the RuntimeData directory. The Group Name is not automatically added.

Platform Symbol Files and Extension Scripts

These are described in the "Advanced Topics" section of the manual (here).

Misc Files

LegalStuff.txt, Logo.png, and AboutImage.png are displayed by SourceGen, on the start screen and the About box.