- Status flags are a key part of most processors, indicating if an arithmetic result is negative, zero, or has a carry, for instance. In this post, I take a close look at the flag circuitry in the Intel 8086 processor (1978), the chip that launched the PC revolution.1 Looking at the silicon die of the 8086 reveals how its flags are implemented. The 8086’s flag circuitry is surprisingly complicated, full of corner cases and special handling. Moreover, I found an undocumented zero register that is used by the microcode.
- Beetlejuice (Wikipedia)
Beetlejuice is a 1988 American gothic dark fantasy comedy horror film directed by Tim Burton from a screenplay by Michael McDowell and Warren Skaaren based on a story by McDowell and Larry Wilson. The film stars Alec Baldwin, Geena Davis, Jeffrey Jones, Catherine O’Hara, Winona Ryder, and Michael Keaton as the title character.