Notes about the IBM PS/1 2133-C11 (386SX)

Back in november 2024 Korrey graciously donated a ROM dump from his PS/1 2133-C11 adding the following: This system is PAINFUL to use. The 386SX-25 has no cache, and the Cirrus Logic VGA chip doesn’t help. DOS compatibility with games is also very poor. Commander Keen 4 for example requires the two video workarounds to […]