In this episode of [Adrian’s Digital Basement], we dive into the world of retro computing with a focus on diagnosing and repairing an old full-height 5.25-inch floppy drive from an IBM 5150 system.

The NES also has considerably less RAM and addressable memory space than the IBM 5150, requiring decrazyo to implement memory mapping techniques to switch between the two systems efficiently.

(Video embedded, below) As luck would have it, [Oli] owns a 40-year-old IBM PC 5150 as well as the matching IBM 5151 monitor, so it was a simple matter to implement the effect in 8088 assembler to ...

Without the 8088 we wouldn't have the likes of the IBM Model 5150 – commonly known as the IBM Personal Computer (IBM PC) – which was one of the first machines to use it when it launched in 1981.