"The M28 was Olivetti’s first PC to have the Intel 80286 processor. The Intel 80286 had a 24-bit address bus and was able to address up to 16 MB of RAM, compared to the 1 MB addressability of its predecessor. However, memory cost and the initial rarity of software using the memory above 1 MB meant that 80286 computers were rarely shipped with more than one megabyte of RAM. The 80286 was designed for multi-user systems with multitasking applications."