Reverse Engineering the Boot Process of a 90s AlphaStation 500
2025-04-03
The author acquired a broken AlphaStation 500 workstation and embarked on a journey to understand its boot process. The investigation centered around the SROM (Serial ROM), which contained eight multiplexed images selectable via jumpers. Using Python and Rust, the author extracted and decoded the SROM data, revealing Alpha machine code. Analysis revealed the CPU directly controls a serial port using internal processor registers for bit-banging. While the AlphaStation's boot issue remains unsolved, the process uncovered the unique boot mechanism of this vintage workstation.
Hardware