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Data General Nova
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===microNOVA=== [[File:Data General mN601G 1.jpg|thumb|Data General ''mN601'' microprocessor]] {{See also|Fairchild 9440#microNOVA}} Data General also produced a series of '''microNOVA''' single-chip implementations of the Nova processor. To allow it to fit into a 40-pin [[dual in-line package]] (DIP) chip, the [[address bus]] and [[data bus]] shared a set of 16 pins. This meant that reads and writes to memory required two cycles, and that the machine ran about half the speed of the original Nova as a result.<ref name=micro>{{cite book |title=microNOVA |publisher=Data General |date=1977}}</ref> The first chip in the series was the '''mN601''', of 1977. This was sold both as a CPU for other users, a complete chipset for those wanting to implement a computer, a complete computer on a single board with 4 kB of RAM, and as a complete low-end model of the Nova.<ref name=micro/> An upgraded version of the design, 1979's '''mN602''', reduced the entire chipset to a single [[VLSI]]. This was offered in two machines, the '''microNOVA MP/100''' and larger '''microNOVA MP/200'''. The microNOVA was later re-packaged with a monitor in a PC-style case with two [[floppy disk]]s as the '''Enterprise'''. Enterprise shipped in 1981, running [[Data General RDOS|RDOS]], but the introduction of the [[IBM PC]] the same year made most other machines disappear under the radar.<ref>{{cite magazine |magazine=Personal Computer World |title=Enterprise - a 16 bit business computer for only Β£2300 |date=October 1983 |url=https://nosher.net/archives/computers/pcw_1983-10-00_010_datagen}}</ref>
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