sQLux is a Sinclair QL emulator. It runs on Linux (including Rapsberry Pi), Mac and MS Windows. It is based on uQlx but with SDL2 used as its OS layer.

sQLux adds several features over the uQlx base code. See the Documentation for more details.

sQLux is in active development, with new functionality added regularly. However, the latest releases and packages are suitable for normal use.

Automatic builds are run and releases are available for the following architectures/O.S.:

• Linux Ubuntu 22.04

  • aarch64 arm v8

  • armv7 (armhf kernel)

• Linux Debian

  • Debian 11 Bullseye

    • armv7 (armhf kernel)

  • Debian 10 Buster

    • armv7 (armhf kernel)

      tested on RaspberryPI 400

• MacOS Intel

• Windows (built w/ MSYS2)

  • 64bit
  • 32bit

Releases are uploaded on Github automatically whenever a new tag, merge or pull request is pushed:

• tags on master branch: Stable releases

  • The tag string is used as part of the releases description and artifacts names

• master branch: Development Releases

  • Every commit or pull into master branch generates a pre-release artifact
  • older Development Releases are overwritten each time a new non-tagged build is run

Some Basic TL;DR instructions will follow for some architecture/O.S.

For more build tips, see Github Actions commands in .github/workflows/*.yml definitions.

apt install build-essential cmake git libsdl2-dev

dnf install cmake gcc gcc-c++ git SDL2-devel

sQLux uses git submodules, so either clone with the --recursive argument.

git clone --recursive https://github.com/SinclairQL/sQLux/

or after cloning

git submodule init
git submodule update

sQLux has switched to using cmake as its build system

1. Install dependencies as per above chapter

2. Build and test

   cmake -B build/
   make
   # then test the binary
   ./build/sqlux --help

1. Install dependencies

   Dependencies are available with Homebrew

   brew install cmake sdl2

2. Build and test

   cmake -B build/
   make
   # then test the binary
   ./build/sqlux --help

Instructions based on debian/ubuntu distro, for other distros you will have to modify as appropriate

Download the SDL2 mingw SDK and adapt the following to your environment/version. The SDL2 development libraries can be found here:

tar xvf SDL2-devel-2.0.18-mingw.tar.gz
cd SDL2-2.0.18/
sed -i "s|/opt/local/|/usr/local/|" x86_64-w64-mingw32/lib/cmake/SDL2/sdl2-config.cmake
sed -i "s|/opt/local/|/usr/local/|" i686-w64-mingw32/lib/cmake/SDL2/sdl2-config.cmake
sudo mkdir /usr/local/i686-w64-mingw32
sudo mkdir /usr/local/x86_64-w64-mingw32
sudo make cross

Now the mingw version of SDL2 is available and we can build sQLux for Win64

mkdir mingw
cd mingw
cmake -DCMAKE_TOOLCHAIN_FILE=../mingw-w64-x86_64.cmake -DCMAKE_PREFIX_PATH=/usr/local/x86_64-w64-mingw32 ..
make

Install MSYS2 from here https://www.msys2.org/

Run the mingw64 environment

Install the toolchain and SDL2

pacman -Sy mingw-w64-x86_64-toolchain
pacman -Sy mingw-w64-x86_64-cmake
pacman -Sy mingw-w64-x86_64-SDL2

Create the build directory and compile

mkdir mingw
cd mingw
cmake.exe -G "MinGW Makefiles" ..
mingw32-make

This will generate sqlux.exe. Dependencies are statically linked, so sqlux.exe will run without the need for additional dlls.

The 64bit build using mingw requires the winpthread library for the high definition timer support.

The 32bit build can be built using win32 threads for XP compatibility and therefore does not include the high resolution timer support.

The emulator currently reads an existing uqlxrc file, so it will re-use any uQlx setup already existing.

NOTE: ROMIM has changed to now only accept 1 rom name

NOTE: RAMTOP is where in memory the top of the ram is, not the amount of ram. As ram on QL starts at 128k in memory map then to created a 128k QL you need to set RAMTOP = 256

sQLux supports additional parameters over those used for uqlxrc. See the Documentation for more details.

sQLux has support for GPU shaders, to emulate the effects seen when using a CRT display. See the Shader documentation for more details on how to build and run sQLux with GPU shaders.

1. update CHANGELOG.md using Keep a Changelog best practices

   Use [Unreleased] during normal development phases

   • this will trigger a latest release build and upload

   When ready, modify the version to something meaninful.

   Any version different from [vx.x.x] or [vx.x.x-some-text] will result in:

   • possibly missing Release Body text
   • a latest release build and upload.

2. commit

   $ git commit -m "Releasing v1.0.7-rc1"
   [dev-newci-4 51379d4] Releasing v1.0.7-rc1
   2 files changed, 11 insertions(+), 4 deletions(-)

3. create tag

   Optional.

   If no tag is pushed, the workflow will overwrite/create a latest release.

   $ git tag v1.0.7-rc1

4. push commits && tags at the same time

   $ git push origin dev-branch --tags
   Enumerating objects: 11, done.
   Counting objects: 100% (11/11), done.
   Delta compression using up to 8 threads
   Compressing objects: 100% (5/5), done.
   Writing objects: 100% (6/6), 657 bytes | 657.00 KiB/s, done.
   Total 6 (delta 3), reused 0 (delta 0), pack-reused 0
   remote: Resolving deltas: 100% (3/3), completed with 3 local objects.
   To https://github.com/<repo>
     b66ef20..51379d4  dev-branch -> dev-branch
   * [new tag]         v1.0.7-rc1 -> v1.0.7-rc1