ZAP Programs

small full-screen apps written in ZAP, the scripting language built into ZeaxOS. they run like the built-in apps but are not part of the OS image — read the source here or download the file.

Calculator

mouse fixed point

A full-screen calculator with a mouse-driven keypad. ZAP only has integers, so the value is kept multiplied by 100 and formatted back into two decimal places. Handles +, -, *, /, % and divide-by-zero. Press Ctrl+Esc to quit.

The calculator running
source 

                


                

                    download
                    open raw
                


            



            


                

                    
File browser

                    mouse
                    filesystem
                


                

                    Browsers the in-memory filesystem. Folders come first and
                    every entry shows its size; click a folder to open it, and
                    Up to go back. The listing is only rebuilt when you change
                    directory, so it stays still (and cheap) while idle.
                


                The file browser running

                

                    source
                    

                


                

                    download
                    open raw
                


            


        



        


            

                Running these
            


            

                These are plain-text .zap files. They are not part
                of the ZeaxOS image — open one in the editor
                (edit calculator.zap, paste it in, save) and then
                run it with run calculator.zap.
            


            

                They behave like real apps: they take over the screen with their
                own title bar, show ZeaxOS's green + mouse cursor,
                and quit with Ctrl+Esc. They are
                written for ZAP v3, stay under the 4 KB file limit, and only
                redraw (and allocate) when something changes, so they keep
                running inside ZAP's fixed arena.