The new Sharp MZ5600. It makes the competition look positively untogether.

Launched nearly two years before in September 1983, Sharp's MZ5600 - the name trying to hold on to a lineage going back to the [#MZ-80B|MZ-80] - was an MS-DOS-compatible IBM sort-of-clone, but running a true 16-bit Intel [!8086].

It appeared to run its own operating system - EOS 16 - which was apparently Unix-like but which could also support CP/M programs, via a [!Z80] plug-in card, as well as those targetted at DOS 1.4 and 2.0[source: https://www.computinghistory.org.uk/det/52156/Sharp-MZ-5600/].

There's not much else to mention, other than clearly computer mice are still a novelty as the advert delights in pointing out that an optional "mouse device" is available for the machine.