Philips NMS 8255
This page was last modified 14:11, 1 July 2019 by Wild Penguin. Based on work by Rderooy and Mars2000you and others.



The NMS 8255 is a professional computer made by Sanyo for the Dutch company Philips. The machine itself is basically the MPC-25 rebranded and localised for the European market. The abbreviation NMS stands for New Media Systems.

The computer is a desktop model with a modern and business-like design and features two built-in disk stations. The color is dark silver and gray.

The NMS 8255 is closely related to the Philips NMS 8250 which is essentially the same computer but has only 1 disk drive. It's also very similar in looks with the NMS 8280.

You can notice the indication 'NMS 8250' on the front of the machine, although it has obviously two disk drives. Actually, the same case was used for both machines, but the label at the back clearly indicates that it's a NMS 8255.

This computer comes with 128kB RAM (not 256kB as indicated on the machine and the box by adding the VRAM). Three models were produced:

  • NMS 8255/00 for the Dutch and Belgian markets, keyboard layout is QWERTY
  • NMS 8255/16 for the Spanish market, keyboard layout is QWERTY with ñ key
  • NMS 8255/19 for the French market, keyboard layout is AZERTY

Three system disks are given with this computer, you can enjoy especially a drawing program in screen 8, called 'Designer Plus', an improved version of the 'Designer' utility provided with the VG-8230 and VG-8235.

Besides this tool, the system disks provide MSX-DOS1 with a nice interface and Home Office 2.

Brand Philips (Manufacturer: Sanyo)
Type NMS 8255
Year 1987
Region Belgium, France, the Netherlands and Spain
Original price NL: ƒ2295
RAM 128kB in slot 3-2
VRAM 128kB
Media MSX cartridges, 2DD floppy disks
Video Yamaha V9938
Audio PSG (YM2149 integrated in MSX-Engine S3527)
Chipset Yamaha S3527
Extras 2 720kB 3,5" floppy disk drives, reset button, software on disks (MSX-DOS 1 - Home Office 2 - Designer Plus)


Philips NMS 8255 front
Philips NMS 8255 back
Philips NMS 8255 right side
Philips NMS 8255 with keyboard
Philips NMS 8255 label


The NMS 8255 is an MSX2 with a Z80A from NEC (D780C-1) and an MSX-Engine S3527 from Yamaha.

This model is known for SCC (and other sound cards) mixing issues. There are several modifications fixing this, the opamp mod by Daemos and luppie not being the worst one.

The plastic front panel also gets very fragile with age. Special care must be taken when shipping that absolutely no stress is placed on the front panel.

Slot Map

Slot 0 Slot 1 Slot 2 Slot 3-0 Slot 3-1 Slot 3-2 Slot 3-3
Page C000h~FFFFh Cartridge
Slot 1
Slot 2
Page 8000h~BFFFh Mirror
Page 4000h~7FFFh Main-ROM Disk ROM
Page 0000h~3FFFh Sub-ROM Mirror
  • The 16KB Sub-ROM is mirrored over pages 0 to 3 in slot 3-0
  • The Disk ROM is a 16kB ROM - 4000h-7FFFh. However, the FDC registers are visible on all 4 pages.


  • RGB output (SCART connector)
  • RF output (UHF)
  • Analog sound & Composite video
  • Luminance video output connector (for monochrome monitors)
  • Keyboard connector
  • Tape recorder connector
  • Centronics compatible parallel port for a printer
  • 2 general connectors (joysticks, mouse, paddle controllers, ...)
  • 2 cartridge slots (on the right side)

External Links