TASEmulators / TASEmulators/BizHawk

Apple II: Virtu Bugs

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Core: Virtu
Dominant language
C#
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Description

Remaining after #1394:

  • Reset button not currently implemented
  • Joysticks are not implemented
  • Paddles are not implemented
  • Controls are buggy generally (see prince of persia - character auto-walks left at the start until you press up-arrow and Donkey Kong)
  • It looks like *.nib support is in the original Virtu source, but the core will not load these files correctly
  • Currently, all client methods that read the system bus (RAMWatch, RAMSearch, HexEditor etc.) have the potential to trigger the peripheral card soft-switches in the core. Altering core state just by observing it is some next-level quantum terribleness... see also #1169

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue covers the Apple II Virtu core, including reset, joystick and paddle input, control behavior, *.nib loading, and system-bus observation; related issue #1169 is also mentioned. Start by investigating the Apple II core and the affected client methods. Done means each listed bug is resolved and the core no longer changes state when it is only being observed.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
operating-systems
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
18/100

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