Zenith MasterSport 386SL
This Zenith Data Systems laptop uses Intel's 20MHz 80386SL processor and comes with 2MB fixed RAM, upgradable to 8MB. The hard disk has a 60MB capacity. The screen, although monochrome, is VGA resolution.
The SL-variant of the 386 is designed to be used in portable computers and features low power usage, integrated cache and memory controllers, an AT-bus controller, and EMS 4.0 hardware. It is also the first of Intel's x86 range to incorporate System Management Mode (SMM) which allows system-level software (such as power management systems) to take control of the processor at any time, regardless of the processor's current operating mode. Later PC's would also use SMM to emulate the PS/2 keyboard interface, allowing USB keyboards to be used even with operating systems that were not designed to support them.
Manufacturer: Zenith Data Systems
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This exhibit has a reference ID of CH37842. Please quote this reference ID in any communication with the Centre for Computing History.
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