Philips NMS 1212
This page was last modified 15:52, 4 September 2023 by Mars2000you. Based on work by Rderooy.


The Philips NMS 1212 is a RS-232C interface including a cartridge, a manual and a floppy disk.

This interface is also compatible with the RS-422 norm, historically used on Apple Macintosh computers. It allows an MSX computer to be coupled to a LAN (Local Area Network).

The adapter has two fixed cables attached, one for the RS-232C norm, one for the RS-422 norm. The RS-232C cable provides a DB-25 Male port. The RS-422 cable provides a DE-9 Female port.

The floppy disk includes

  • MSX-DOS 1
  • KERMITR.COM, a terminal MSX-DOS program for MSX1 and MSX2 computers, enabling to transfer files using the Kermit protocol
  • XMODEM.COM, a terminal MSX-DOS program for MSX2 computers, enabling to transfer files using the Xmodem protocol
  • XBASIC.BAT, an autoexecutable MSX-DOS file that installs the RS-232C BIOS 1.0 in RAM - the interface is indeed without any BIOS, the RS-232C BASIC instructions are only available after execution of this program or the corresponding AUTOEXEC.BAS on the same floppy disk
  • a RS-232C driver aimed at advanced programmers to write communication programs in Assembler
Brand Philips
Model NMS 1212
Year 1986
Region The Netherlands
Launch price
Package content Cartridge
User's Manual
Floppy disk
Emulation Not yet emulated


Philips NMS 1212 package
Philips NMS 1212 box