The subsequent development of a multiplexing accessory allows one Lt. Kernal to be shared by up to 16 computers, using a round robin scheduling algorithm.
Fiscal built the units to order until late 1986, at which time the decision was made to turn over the production, marketing and customer support to Xetec Inc. Fiscal continued to provide secondary technical support, as well as free DOS upgrades, until December 1991, at which time production of new Lt. Kernal systems ceased.
[5] A key feature of the Lt. Kernal is its sophisticated disk operating system, which behaves much like that of the Point 4 minicomputers that Fiscal was reselling in the 1980s.
The Lt. Kernal was favorably and comprehensively reviewed in The Transactor, which praised the drive's speed, storage capacity, and ease of use.
Some criticism was levied at the product's incomplete documentation, its drain on the resources of the host computer (particularly with the Commodore 64, whose limited memory requires frequent paging of the DOS), and the lack of an automated backup utility.