SCUMM/Technical Reference

Here we are trying to gather all sorts of information we have about the SCUMM/SPUTM engine.

This needs to be extended. A lot of information can be found directly in the ScummVM source, the heads of its developers, and the external links I found below. Feel free to try and tap each of these sources to gain more information and add it here (note: no brain surgery recommended. For external sources, permission from the authors should be recieved before blatantly copying stuff).

General

• SCUMM Virtual Machine
• SCUMM Arrays and Strings
• SCUMM Versions
• SCUMM Terminology

Resource and data formats

Information about the formats of various resource types used in SCUMM games.

• Index File
• Box resources
• Charset resources
• Costume resources
• Image resources
• Object resources
• Script resources
• Sound resources
• iMuse data
• String format
• SCUMM 6 resource files

Opcode tables

• SCUMM V0 opcodes
• SCUMM V2 opcodes (V1 is very similar)
• SCUMM V5 opcodes (V3 and V4 are very similar)
• SCUMM V6 opcodes (V7 is very similar)
• SCUMM V8 opcodes

External links

• https://github.com/jamesu/scummc/wiki
• http://www.scummvm.org/docs/specs/index.php
• https://web.archive.org/web/20150914231113/http://www.lucasforums.com/showthread.php?s=&postid=1199968
• http://scumm.mixnmojo.com/?page=articles
• http://scumm.mixnmojo.com/?page=specs
• http://scumm.mixnmojo.com/?page=utils