To get the very latest version of the simulator, or if you cannot find an up-to-date pre-built executable for your platform, you will need to get the sources for the simulator and build them yourself. This page describes how to do that.
There are two ways to get the sources:
First, make sure you have GIT installed on your machine. These instructions assume you are using the command-line interface of GIT -- you can ensure you have git installed by typing git at a shell command prompt. It should provide you a usage help screen. If you get an error telling you something to the effect that the command wasn't found, please recheck your installation or make sure that git is on your path.
At a command shell prompt (e.g. bash on Linux or Mac OS X, or on Windows using Cygwin) issue the following command:
git clone https://gitlab.com/dps8m/dps8m.git
The above command will create a directory called dsp8m under your current working directory and "pull" the latest version of the source tree into this directory.
Once you have the DPS8M sources on your machine, follow the instructions on this page to build the simulator from source: