| • | Do not confuse 'expanded' with 'expansion'. |
| • | Expanded memory was created as a way to provide megabytes of RAM to PC-class and XT-class computers. |
| • | Only DOS programs written to use expanded memory can use expanded memory. <--- IMPORTANT |
| • | It can be fitted to AT-class computers as well, usually done in support of DOS programs that expect and use expanded memory. |
| • | This is a 'paged/windowed' form of memory. |
| • | An expanded memory driver is required. DOS programs communicate with the driver, and the driver communicates with the expanded memory hardware. The user manual for your card will inform you as to which driver is required for your make-model of card. Without the correct driver loaded, expanded-memory-aware programs will indicate that no expanded memory is present. |
| • | The WikiPedia article is here. |