### Original source code https://github.com/ES40-Emu/es40  


### This is a fix for latest MacOS (as of 28.07.2026) for es40-emu fork ### 
### You need to build SDL3 from source and ideally have it installed in /usr/local ### 
### You get the native CDE X11 window via SDL3 
### Unfortunately I could not figure out a working scancode for "backslash" key on an Apple Keyboard that would work in SRM 

### then proceed to build es40-macos ###

wget https://astr0baby.online/es40-macos/es40-macos.tgz 
tar -zxv es40-macos.tgz
cd es40-macos 
mkdir build
cd build
cmake ..
make --j4 
sudo cp es40 es40-cfg es40_cfg es40_idb es40_lsm es40_lss /usr/local/bin  

### Next you need to generate a configuration file es40.cfg using es40_cfg or es40-cfg

### Check the sample es40.cfg file I have included 
### Here we are using the native MacOS fake ethernet inteface aka feth for networking (no need for physical cables) 
### To make things easier you can use the network-setup-script included here 
### Only drawback is that the es40 simulator will then need sudo to be able to use pcap on these virtual interfaces 


### In the example here we are setting up 

feth5001   (used by es40)  
bridge200  (gateway) 

### From Tru64 just setup

   ifconfig tu0 10.0.40.2 netmask 255.255.255.0 up
   route add default 10.0.40.1 

  

### once ready you can run the es40 simulator from where you have the sim files 

sudo es40