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Thanks Larry Shaw, Craig Gordon
and Derek Thornton for contributing these excellent IMSAI systems. More on the history of IMSAI and key corporate documents can be found here. From PC-Story's excellent page on the history of IMS and IMSAI:
Although the MITS Altair 8800 was the first practical personal microcomputer and started the industry, credit for spreading the personal computer revolution must go to another company_IMS Associates and its product, the Imsai 8080 computer. While it was not strictly a clone of the Altair, this machine adopted the bus structure of the Altair and used interchangeable plug-in circuit boards. This commonality and the availability of the Imsai assured the dominance of the Altair (S-100) Bus.
One very important thing that Imsai did to advance the use of floppy disks was to license the best disk operating system, later to be known as CP/M. In fact, it was money from the Imsai license that encouraged Gary Killdal to form Digital Research Incorporated and to get into the CP/M operating system business.
While Imsai never became a successful systems house as did Cromemco and others, the Imsai 8080 with its massive power supply and 22-slot chassis was a foundation for almost any 8080 or Z-80 system you could think of. Even Alpha Micro Systems used the Imsai for its first 16-bit multi-user systems.
One of our several IMSAIs booted up and running
Know anything special about IMSAI? Contact us!
Our IMSAI 80/30 from Rob Barnaby
Our interviews with Rob Barnaby and his live demo of WordStar on the original IMSAI PC 80/30
Our scan of IMSAI Key Corporate Documents from beginning to end
Our Altair 8080
The complete IMSAI story on PC-History
IMSAI.net's site featuring a retro PC clothed as an IMSAI!
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