| | Expanded Memory Encyclopedia Article @ Demoz.org (Site not responding. Last check: 2007-10-25) |
 | | In order to fit potentially much more memory than the 384 KiB of free address space would allow, a banking scheme was devised, where only selected portions of the additional memory would be accessible at the same time. |
 | | This insertion of a memory window into the peripheral address space could originally be accomplished only through specific expansion boards, plugged into the ISA expansion bus of the computer. |
 | | Both machines used real mode memory architecture, which only allowed programs to use 1 megabyte of address space, of which only up to 640 KiB was reserved for use. |
| demoz.org /encyclopedia/Expanded_memory (1034 words) |