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Stefan Arentz 1c00e6f271 Implement speaker sound support (#188) 
Add sound subsystem that emulates the Apple II speaker by:
- Tracking speaker state toggles when $C030 is accessed
- Generating audio samples based on CPU cycle timing
- Outputting 44.1 kHz audio via SDL

New files: snd.h, snd.c

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-11 13:07:28 -05:00
disks
Include some basic test disks
2016-11-29 21:52:29 -05:00
screenshots
Update README.md
2016-11-26 08:50:38 -05:00
scripts
Script for Burger Time cheat
2017-09-20 18:06:30 -04:00
src
Implement speaker sound support (#188)
2026-01-11 13:07:28 -05:00
tests
Adding some random tests
2016-12-26 11:10:26 -05:00
.gitignore
Fixes #171 - Support software rendering in tty (#172)
2017-10-02 20:20:53 -04:00
.travis.yml
Introduce Lua 5.2 support (#148)
2017-09-18 21:21:57 -04:00
README.md
Add small doc improvements for first time users (#182)
2018-01-25 16:38:53 -05:00

README.md

Emulated Woz Machine

Build Status

Introduction

Two years ago between christmas and new year I wrote a tiny and incomplete 6502 emulator and turned it into an original Apple 1 emulator. It was a fun and nostalgic project to work on. I grew up with the Apple II and never had a change to see an Apple 1 in action.

A few weeks ago I decided to pick this project up again. I am extremely motivated to turn this into a high quality emulator that supports the Apple 1, Replica 1, Apple ][+ and Apple IIe. Some of that work is really close to being finished, other work will take many months of spare time hacking.

Goals & Status

Here are some of the things I want to accomplish for each emulated machine:

CPU Emulator

  • 6502 support
  • 65C02 support
  • Tracing facility
  • Debugger
  • Speed throttling

Apple 1

8K / 6502 / Classic ROM

  • Terminal based emulation
  • Classic display emulation (SDL based)
  • Cassette interface

Replica 1

32K / 65C02 / KRUSADER ROM

  • Terminal based emulation
  • Classic display emulation (SDL based)
  • Cassette interface
  • CFFA1 Support

Apple ][+

48K / 6502

  • Basic Apple ][+ architecture implementation - In progress
  • Disk II emulation - In progress
  • Display Emulation - 40 Column mode
  • Display Emulation - Low resolution graphics
  • Apple Language Card
  • Joystick Support
  • Audio Support
  • Display Emulation - High resolution graphics - Mostly works.

Building the emulator

cd src
make

Running the emulator

From the command line:

./src/ewm two --color --drive1 disks/DOS33-SamplePrograms.dsk
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Description
Emulated Woz Machine - Apple ][+ Emulator
apple2emulatormos6502
Readme 719 KiB
Languages
C 95%
Lua 1.8%
Makefile 1.5%
Assembly 1.4%
CMake 0.3%