Doug Brown personal blog
An invalid 68030 instruction accidentally allowed the Mac Classic II to boot
This is the story of how Apple made a mistake in the ROM of the Macintosh Classic II that probably should have prevented it from booting, but instead, miraculously, its Motorola MC68030 CPU accidentally prevented a crash and saved the day by executing an undefined instruction.
- Points
- 304
- HN comments
- 69
- Submissions
- 1
- Cited by
- 0 commenters
Hardware & ElectronicsHistory & Retro Computing2025
On Hacker News
| Submitted | Title on HN | Points | Comments |
|---|---|---|---|
| Jan 25, 2025 | An invalid 68030 instruction accidentally allowed the Mac Classic II to boot by todsacerdoti | 304 | 69 |
