In 1982, NEC marketed a series of 32-bit high-performance minicomputers: the NEC MS120, MS140 and MS190.
In addition to employing a 32-bit architecture, this 32-bit family achieved higher system speed by employing features such as pipeline control, memory interleave, partial firmware conversion of operating system functions, and a high-speed standard bus. In particular the MS190, which was announced in January, achieved the world's highest performance in terms of scientific and engineering calculation by employing Current-Mode Logic LSI, a technology from the ACOS System 1000 ultra-large general-purpose computer.
The operating system, NCOS1, was a multi-service operating system used for a variety of applications, including communications network control, industrial control, scientific and engineering calculation and distributed processing, and it efficiently achieved simultaneous execution of multiple online real-time processing, time-sharing processing and batch processing tasks.
|Announcement date||April 1982||April 1982||January 1982|
|Memory||Maximum memory capacity||2MB||4MB||16MB|
|Error correction||ECC (Automatic error detection and correction)|
|Memory element||LSI (64Kbit/chip)|
|Number of instructions||Max. 171, Additional 62||Basic 207, Additional 85|
|Arithmetic system||Binary parallel, Fixed point|
|Floating point (Optional)|
|Registers||33||Standard 34, Additional 4|
|Other mechanisms||Cache memory||none||Standard 32KB|
|Memory protection mechanism||Standard 32KB|
|Scientific operation mechanism||Optional|
|Vector operation control mechanism||none||optional|