Aucnet NIA-2001
This page was last modified 13:32, 26 May 2023 by Mars2000you. Based on work by Gdx and Rderooy.



The Aucnet NIA-2001 is a very special computer based on the MSX turbo R aimed at the Japanese car dealers. Its purpose was as an online auction system for used cars. On this use video and audio was routed through a satellite and actual bidding was done through a built in modem.

Although it comes with version 4.0 of MSX-BASIC, this machine does not have the PCM hardware, that is defined as part of the MSX turbo R standard.

The machine came with a cartridge that contains the AUCNET software. By default it expects to start this AUCNET software, but when the INS+DEL+UP+DOWN+LEFT+RIGHT keys are pressed at the same time during boot, it will go to BASIC. A message asks to insert the cartridge when it is not.

Brand Aucnet (Manufacturer: Takaoka Electric)
Model NIA-2001
Year 1989
Region Japan
Launch price
RAM 512kB in slot 3-0
VRAM 128kB
Media MSX cartridges
Video Yamaha V9958
Chipset Toshiba T9769C and ASCII S1990 bus controller
Keyboard layout QWERTY/JIS + numeric keypad
Extras Kanji-ROM, Modem, RS-232C BASIC, Superimposer, Kanji BASIC, MSX-MUSIC BASIC
Emulation ROMs have been dumped and machine is partly emulated. More details are needed on the original keyboard and printer port. The superimpose and modem functions are not emulated.




This computer is based on the MSX turbo R. Data recorder port, FDD drive and PCM are not implemented. The Z80 and R800 are switchable by switch.

Software side, this machine has MSX-JE, MSX-Music, MSX-Serial and MSX-BASIC 4.0

Slot Map

Slot Slot
0-0 0‑1 0-2 0-3 Slot 1 Slot 2 3-0 3-1 3-2 3-3
Page C000h~FFFFh Cartridge
Slot 1
Slot 2
Panasonic mapper
Page 8000h~BFFFh Kanji
Page 4000h~7FFFh Main-ROM MSX-
Disk ROM
Page 0000h~3FFFh Sub-ROM
  • Slot 3-3 is divided into 8kB Page using the Panasonic mapper. Each can contain internal RAM, ROM or SRAM.
  • The Opening ROM includes RS-232C BASIC
  • The Disk ROM is combined with MSX-DOS 2.30, it's a 64kB ROM with a specific mapper probably useful for the network software and/or the firmware.


  • Keyboard (Hirose QM40-26PA-EP)
  • Joystick (DB-9 male)
  • Misc (DB-9 female)
  • Power Cord (100V 60Hz)
  • Two power outlets
  • Telephone RJ11
  • Line RJ11
  • Centronics 14-pin compatible Parallel port for a printer
  • RGB out
  • Audio/Video out (RCA)
  • Audio/Video in (RCA)
  • RS232-C (DB25 female)
  • 2 cartridge slots

Note: No Data recorder connector!

External Links