ZAP

ZAP is an Infocom interactive fiction language, at the "assembly" level (intermediary between high-level ZIL and the low-level virtual-machine code Z-code).

Tools

 * ZILF: Tools for working with ZIL, including a compiler that produces ZAP
 * VirtualStudio ZIL support files

Sample files

 * Historical Source (Infocom source code including ZAP files)