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PC-98

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The PC-98 was a dominant lineup of personal computers manufactured by the Japanese company NEC. Produced between 1982 and 2003, this series included both 16-bit and 32-bit machines.

PC9800 logo 1982
PC9800 logo 1982

While these computers used standard x86-based processors, they utilized an in-house architecture. This specific design made them incompatible with IBM clones, which were the standard in other parts of the world. This distinction allowed NEC to establish a massive presence in the Japanese market. By 1999, NEC had sold more than 18 million units of the PC-98 series.

PC-9801 computer set
PC-9801 computer set

To understand why the PC-98 was so successful, one must look at the technical challenges of the Japanese language. Japanese writing uses multiple systems, including kanji, which consists of thousands of unique characters. Most global IBM clones lacked the graphics capabilities to display these complex characters easily. The PC-98 solved this by using specialized hardware. For example, the original PC-9801 used two separate $\mu$PD7220 display controllers.

N88-BASIC(86) color text with graphics
N88-BASIC(86) color text with graphics

One controller managed text, while the other managed video graphics. This setup allowed the machine to handle the intricate requirements of Japanese text and visual data simultaneously.

The development of the PC-98 was driven by a desire to bridge the gap between business and consumer needs. A developer named Hamada led the project planning for the series. He wanted a 16-bit machine that offered backward compatibility with the successful PC-8800 series. This meant users could still use their older peripheral devices, such as displays and floppy disk drives.

PC-9801DX expansion slot
PC-9801DX expansion slot

To ensure a strong software library, the team also developed N88-BASIC(86). Because they could not reach an agreement with Microsoft for a specific version of BASIC, the team wrote this code from scratch. To encourage growth, NEC provided 50 to 100 free prototypes and technical data to third-party software developers.

NEC released several distinct models that catered to different user requirements. The first model, the PC-9801, launched in October 1982 with a 5 MHz 8086 CPU. It featured an 8-color display with a maximum resolution of 640\times400 pixels.

NEC PC-9801F Motherboard with V30
NEC PC-9801F Motherboard with V30

In 1983, the PC-9801F arrived, offering an 8086-2 CPU that could run at 5 or 8 MHz. It included a kanji ROM board containing 2,965 characters to assist with Japanese word processing. The PC-9801VM, released in July 1985, became a major milestone for the series. It utilized an NEC V30 processor running at 10 MHz. This model was incredibly popular, with annual sales reaching 210,000 units.

Market dominance was achieved through strategic hardware choices and industry cooperation. By 1991, the PC-98 held more than 60% of the Japanese personal computer market share. The series expanded from business tools into education and various hobbies throughout the 1990s.

NEC PC-9801VM Front
NEC PC-9801VM Front

NEC also supported the ecosystem by allowing software companies to bundle certain versions of MS-DOS without paying a license fee between 1983 and 1987. This helped build a massive library of available programs. By 1987, NEC reported that one million PC-98 units had been shipped, supported by approximately 3,000 different software packages.

Despite this success, the PC-98 eventually faced significant challenges from global technological shifts. For many years, the Japanese market remained isolated because global manufacturers struggled with the language barrier. However, by 1990, improvements in CPUs and graphics changed the landscape. The introduction of the DOS/V operating system allowed IBM clones to display Japanese text using software fonts.

NEC PC-9801LS
NEC PC-9801LS

This development gave international manufacturers a way to compete directly in Japan. As Windows became the standard operating system, software developers no longer felt the need to write separate code for the unique PC-98 platform.

The decline of the PC-98 was finalized by the rise of the "Wintel" era. An influx of cheaper clone computers from American vendors increased competition. Additionally, the popularity of Windows 95 reduced the demand for older PC-98 legacy applications.

NEC PC-9821Ap 5-inch FDD model
NEC PC-9821Ap 5-inch FDD model

Consequently, NEC abandoned its compatibility with the PC-98 platform in 1997. The company transitioned to producing computers based on the PC System Design Guide to align with the global standard. This marked the end of an era where a proprietary architecture could dominate a major national market.

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🖼️ Images & Media (18)
File:PC9800_logo_1982.svg
PC9800_logo_1982.svg
File:NEC personal computers advert in 1982.jpg
NEC personal computers advert in 1982.jpg
File:PC-9801 computer set.jpg
PC-9801 computer set.jpg
File:NEC PC-9801F Motherboard with V30.jpg
NEC PC-9801F Motherboard with V30.jpg
File:NEC PC-9801VM Front.jpg
NEC PC-9801VM Front.jpg
File:NEC PC-9801LS.jpg
NEC PC-9801LS.jpg
File:PC-9801VX 10 MHz models advert.jpg
PC-9801VX 10 MHz models advert.jpg
File:Japanese PC Shipments by bit designs 1983-1993.svg
Japanese PC Shipments by bit designs 1983-1993.svg
File:NEC PC-9821Ap 5-inch FDD model.jpg
NEC PC-9821Ap 5-inch FDD model.jpg
File:Readers interested PC by machines in Japan 1993.svg
Readers interested PC by machines in...
File:PC-9801DX expansion slot.jpg
PC-9801DX expansion slot.jpg
File:Buffalo EMJ-4000 EMS RAM board.jpg
Buffalo EMJ-4000 EMS RAM board.jpg

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