From the manual: The Fulcrum Computer Products OMNIRAM for the IEEE 696/S-100 bus provides 64 kilobytes of fast static random access memory. Provision is made for 8 or 16 but transfers, extended 24 bit addressing, and for control via the bus phantom line. In addition, a number of features are included to make the OMNIRAM compatible with systems that designed before the IEEE-696 standard was developed. These include bank selection and provision for operation with IMSAI-type front panels. When the bank select option is activated, the board is divided into two parts which can reside in separate banks. The division of the board may be into two 32K sections or into one 16K section and one 48K section. Provision is made for DMA override of bank selection is needed. The board is also compatible with IMSAI-type extended addressing.