Interl

Interl
Utility
Create Apple II disc images from Z-code
[[File:|class=ifwiki-infobox-image]]
Link
Developer
Format	Z-code
Interaction style
System	Apple II
System details
Latest version
Status	Unmaintained
Implements
Uses
License
Notes	A loosely connected family of tools doing the same job in different contexts.
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Interl is the name used by a family of tools used to turn larger Z-code files into floppy disc images for the Apple II, for use with Infocom's original interpreters for that platform. (The format involves sector interleaving, hence the name.)

QuickBasic version

This version, calling itself INTERL, was created in 2002 by Steve Nickolas (aka Usotsuki), supporting Z-machine version 2 and 3 files. It described itself as "INFOCOM DATA FILE RE-INTERLEAVE AND APPLE II DISK IMAGE MAKER".

• Download or view contents of Interl.zip, at the IF Archive.

interlz3: C version

A C port of INTERL was created in 2017 by Michael Sternberg. It's described in his July 2017 Kansasfest paper An Apple II Build Chain for Inform (direct link to PDF).

• Bitbucket repository: C source code.

interlz5

interlz5, which did a similar job for Z-machine version 5 files, was created by Steve Nickolas in December 2016.

• A copy of the C source code can be found in the demo material accompanying the Sternberg paper (under demo6): apple_ii_inform_demo_files.zip.
• interlz5-001.zip (dead link 🔍) (link referenced in the Sternberg paper).
• Download or view contents of interlz5.zip, at the IF Archive.

interl5.py

In 2025, Jeff Epler reverse-engineered an interlz5 binary (not having found the source code) and created a Python version interl5.py.

• "interlz5" in Python -- Apple II text adventure adventures (15-Dec-2025).
• Download interl5.py from the IF Archive.

See also

• Puny BuildTools
• “An Apple II Build Chain for Inform”, on the IntFiction forum (thread started 28-Jul-2017).