Zenith Supersport

Zenith Supersport

[Vin87]

The Zenith Supersport ZWL-184-02, released in 1986, was a rare and advanced “luggable” laptop notable for its 4.77 MHz 8086 processor, 20 MB hard drive, electroluminescent backlit CGA LCD display, and robust MS-DOS compatibility. Its claim to fame lies in being among the early truly portable DOS-based laptops, featuring a full 3.5″ floppy drive, internal hard disk, and battery operation at a time when most portables were heavy and less integrated, marking a significant step toward modern laptop design.

• Manufacturer: Zenith Data Systems (Japan/USA)
• Model: ZWL-184-02
• Released: 1986
• Type: Laptop
• Cost at release: USD $3,999 (CAD ~$13,700 adjusted for inflation)
• MIPS: 0.33 (330 KIPS)

Technical Specifications

• CPU: Intel 80C88 CPU, switchable between 4.77 MHz and 8 MHz
• Memory (RAM): 640 KB standard
• 3.5″ floppy disk drive with 720 KB capacity
• 20 MB ALPS hard disk drive (rare configuration)
• Display: 10.5″ electroluminescent backlit CGA LCD with 640 x 200 resolution
• Graphics: CGA video output with external video connector
• Composite monochrome video and RGB color video outputs
• Modem (2400 Baud)
• Operating System: MS-DOS (versions including 3.21 and 6.20)
• Power: Battery-operated with 15 VDC, 3.1A supply; also supports 12 VDC in normal use
• Weight: Approximately 6.2 kg (about 13.6 lbs)

Operating System & Programming Languages 

• Operating System: MS-DOS 3.21 and, in later years, up to MS-DOS 6.20. The system was fully compatible with standard IBM PC DOS software of its era

• Supported Languages
  • As an IBM PC-compatible running MS-DOS, the Zenith Supersport ZWL-184-02 could support a wide range of programming languages available for DOS in the mid-to-late 1980s. Notable languages included:
  • BASIC (such as GW-BASIC or BASICA)
  • Microsoft QuickBASIC
  • Pascal (e.g., Turbo Pascal)
  • C (e.g., Microsoft C, Turbo C)
  • FORTRAN
  • Assembly language (using MASM or TASM assemblers)
  • COBOL
  • dBASE (for database programming)
  • Batch scripting (DOS .BAT files)

Notables

• Rare and Advanced: The ZWL-184-02 is considered a very rare model among vintage laptops, notable for its 4.77/8 MHz 80C88 CPU, 20 MB hard disk, and electroluminescent backlit CGA LCD—features uncommon in 1986 portables.
• Early Battery-Powered Portability: It was among the first laptops to combine a hard drive, battery operation, and a backlit LCD, paving the way for modern portable computing.
• Place in History: The Supersport line was a top seller in the late 1980s, with Zenith capturing over 25% of the laptop market in 1988. It was the official laptop for Harvard Business School’s Master’s program in 1988, beating out IBM for the contract.
• OEM for HP: Zenith’s Supersport 286 was rebadged and sold by Hewlett-Packard as the Vectra LS/12, marking a rare instance where HP sourced laptops from another manufacturer due to Zenith’s superior performance and features at the time.
• No Real-Time Clock: Unlike many later laptops, the ZWL-184-02 lacked a hardware real-time clock (RTC); users had to enter the date and time at each boot, a quirk noted by collectors.
• Nicknames & Reputation: Sometimes referred to as a “luggable” due to its substantial weight (over 13 lbs), it was praised for its robust build and reliability. The keyboard is remembered for its satisfying, clicky feel.
• Battery Life Oddities: With two floppy drives, the system could run for up to 4 hours on battery, but with a hard drive installed, battery life dropped sharply—an early example of the trade-offs in laptop design.
• Union-Made: Zenith claimed the Supersport was the only union-manufactured personal computer in the world at the time, assembled in Michigan by United Steelworkers

Donated by: Dr. Arlen Michaels