National FS-4700
This page was last modified 10:57, 20 March 2022 by Gdx. Based on work by Mars2000you and Rderooy.




The National FS-4700 is a "Word-pro Persocom" (Word processor Personal Computer) similar to the FS-4500 but with a built-in double-sided disk drive (you can notice that FS-4700F is indicated on the box and the label).

The FS-4700 was available only in black & dark silver. It was aimed at the Japanese market.

Firmware data can be saved on the FS-CR1008S cartridge. It contains 8kB SRAM and a battery to preserve them when the computer is off.

A dial on the left side allows a change of print density. With the dial set to the maximum, it is possible to print directly onto thermal paper. This way no ink cartridge is needed.

Three switches on the back allow a selection between JP50on or JIS keyboard layout, external printer or built-in printer and to bypass the firmware menu and go directly to BASIC on startup. On emulators, these switches are not yet emulated, so you can't bypass the firmware when booting the computer.

The original replacement ink cartridge is the CF-PR120, but you can also use the CF-PR110.

Brand National
Model FS-4700
Year 1986
Region Japan
Launch price ¥158,000
RAM 64kB in slot 3-2, 8kB SRAM for software data back up
VRAM 128kB
Media MSX Cartridges, 2DD floppy disks
Video Yamaha V9938
Audio PSG (YM2149 integrated in MSX-Engine S3527)
Chipset Yamaha S3527
Keyboard layout QWERTY/JP50on by default (JIS available with switch) + numeric keypad
Extras 720kB 3,5" floppy disk drive, reset button, built-in printer, dial for selecting print density, switch for choosing keyboard layout, switch for selecting an external printer, switch for enabling/disabling the firmware, Kanji-ROM level 1, MSX-DOS 1 (on disk), firmware: Japanese + English Word Processor, specific compound Kanji dictionary (not MSX-JE), kanji driver, Address Book & Business Card
Emulation ROMs dumped and emulated with exception of the internal printer. The printer select switch is set to External printer and cannot be changed. The firmware application menu switch is enabled by default and cannot be changed. Keyboard switch is set to JIS and cannot be changed.


This computer comes with a built-in Japanese/English Word Processor with kana-kanji conversion, however the procedure is not compatible with MSX-JE.

The firmware menu presents 4 options:

  1. Japanese Word Processor (15 or 30 characters per line)
  2. English Word Processor (30 or 60 characters per line)
  3. Address Book & Business Card

Each Word Processor has a sub-menu with 7 options: 1 - New text - 2 - Edit text - 3 - Print - 4 - Save - 5 - Load 6 - Delete (only on disk) - 7 - Close and Reset. In options 1 and 2, you can access settings with F8.

Compared to the FS-4000 firmware, there are many improvements:

  • 5 options instead of 2 for paper sizes for the printer, including B4
  • Default device for saving of text and settings is automatically chosen by the computer: a disk drive if present, or otherwise tape.
  • You can also toggle between both devices with the "-" (minus) key
  • Better kana-kanji conversion as the Kanji Dictionary Tool corresponding to the FS-SR022 cartridge is integrated into the FS-4700
  • Use of screen 7 instead of screen 2 for the Word Processors, which allows more characters per line (30 or 60 by default), but you can use the "-" (minus) key on the main menu to go back to the 'MSX1' setting (15 or 30 characters per line); pressing the "+" key restores the 'MSX2' default setting
  • Addition of 2 extra options in the menu of the Word Processors
  • Addition of the Address Book & Business Card utility, which uses screen 6

From MSX-BASIC, you can go back to the applications with

  • CALL JWP or _JWP for the Japanese Word Processor 'MSX2' setting
  • CALL JWP1 or _JWP1 for the Japanese Word Processor 'MSX1' setting
  • CALL EWP or _EWP for the English Word Processor 'MSX2' setting
  • CALL EWP1 or _EWP1 for the English Word Processor 'MSX1' setting
  • CALL JUSHO or _JUSHO for the Address Book & Business Card utility


Besides MSX-DOS 1, the provided floppy disk includes examples of documents that can be loaded and edited in the firmware.

To run MSX-DOS, you need to insert the disk in drive A and choose option 4 of the firmware menu. On a real machine, you can also skip the firmware menu by using the switch before booting with the MSX-DOS disk in drive A.



National FS-4700 (black) with disk
National FS-4700 back
National FS-4700 right side
National FS-4700 mainboard
National FS-4700 lower part of mainboard
National FS-4700 higher part of mainboard (partially hidden by FDC board)
National FS-4700 (silver)
National FS-4700 annex board
National FS-4700 FDC board
National FS-4700 box and content
National FS-4700 box
National FS-4700F label

Firmware / Software

National FS-4500/4700 Main menu
National FS-4500/4700 Japanese Word Processor sub-menu
National FS-4500/4700 Japanese Word Processor option 3 of sub-menu
National FS-4500/4700 English Word Processor settings
National FS-4500/4700 English Word Processor option 3 of sub-menu
National FS-4500 + diskdrive/4700 Japanese Word Processor option 4 of sub-menu
National FS-4500/4700 Address Book & Business Card
National FS-4500/4700 Address Book & Business Card
National FS-4500/4700 Address Book & Business Card
National FS-4700 Floppy disk - document selection
National FS-4700 Selected document has been loaded
National FS-4700 Edit mode for selected document


The National FS-4700 is a MSX2 with 2 cartridge slots (aligned one at the top). The CPU is a Z80 from Zilog (Z084C0004PSC). The MSX-Engine comes from Yamaha (S3527). The SRAM is a NEC D4364C-15L chip. The floppy disk controller is the MB8877A from Fujitsu Microelectronics.

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
driver 1
driver 2
Page 8000h~BFFFh Bunsetsu
Word-Pro 1
Word-Pro 2
Page 4000h~7FFFh Main-ROM Disk ROM
Page 0000h~3FFFh Sub-ROM Word-Pro Font


External links