Enterprise 64/128 (1985) (formerly ELAN 64/128)
After the 1982 introduction of the ZX Spectrum, Hong Kong trading company Locumals commissioned Intelligent Software to develop a home computer in the UK. During development, the machine had the codename DPC. The machine was also known by the names Samurai, Oscar, Elan, and Flan before the Enterprise name was finally chosen. The succession of name changes was mainly due to the discovery of other machines and companies with the chosen name.
The Enterprise has a 4 MHz Z80 CPU, 64 KB or 128 KB of RAM, and 32 KB of internal read-only memory that contains the EXOS operating system and a word processor. The BASIC programming language was supplied on a 16 KB ROM cartridge, it had to be inserted into the left side of the machine. Cartridges containing other programming languages (Forth, Lisp, Pascal) were also produced. In this way, games or user programs could be stored on the cartridges. The maximum supported ROM size of the cartridges was 64Kb.
Two application-specific integrated circuit (ASIC) chips take some of the workload off of the central processor. They are named 'NICK' and 'DAVE' after their designers, Nick Toop, who had previously worked on the Acorn Atom, and Dave Woodfield. 'NICK' manages graphics, while 'DAVE' handles sound and memory paging. The Z80, like all 8-bit CPUs, could only address 64 KB of memory, so "bank switching" was required to access more memory. The Enterprise's memory can be expanded to 4 MB without any tricks (and this is a 'plain' 8-bit machine like the ZX-Spectrum or Commodore 64)
Enterprise was announced to the press in September 1983, and some 80,000 machines were pre-ordered by the time of its April 1984 sales launch. The product did not ship until 1985, by which point the UK home computer market was already dominated by the ZX Spectrum, Commodore 64, Amstrad CPC, and Acorn BBC Micro with the 16-bit era on the horizon (Commodore Amiga, Atarti ST, etc)
After the initial manufacturing run of 80,000 units, it is believed that no further units were made, so the Enterprise is among the rarer home computers of the 1980s.
source of images: 8bit home computer museum
more info: https://en.wikipedia.org/wiki/Enterprise_(computer)
https://www.theregister.com/2013/10/24/elan_flan_enterprise_micro_is_30_years_old/