On the C64 some packers used screen memory to host the code. The first was The Screen Cruncher by 1001 Crew, a Dutch group. It's mentioned in this interview by

On the C64 some packers used screen memory to host the code. The first was The Screen Cruncher by 1001 Crew, a Dutch group. It's mentioned in this interview by its original author. https://web.archive.org/web/20040902191610/http://www.c64hq.com/index1152.php https://web.archive.org/web/20040902191610/http://www.c64hq....