Philips NMS 8255
This page was last modified 21:26, 22 February 2020 by Mars2000you. Based on work by Rderooy and Wild Penguin and others.

Contents

Description

Computer

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 drives. The color is dark silver and gray.

The NMS 8255 is almost identical to the Philips NMS 8250, with the only real difference being the number of disk drives. The NMS 8250 has one, while the NMS 8255 has two. For both models the label on the front will say NMS 8250. To see the actual model, you need to check the label on the back of the machine.

The NMS 8255 is also very similar in appearance to the NMS 8280.

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 and Belgian markets, keyboard layout is AZERTY

Belgium is a country with 3 official languages: Dutch - French - German. With exception for the NMS 8220 and the NMS 8280 only available in the Dutch version, also in the French speaking part (Wallonia), all the Philips MSX computers released in Belgium were different according it was in Flanders (Dutch) or in Wallonia (French).

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)
Emulation ROMs for the international version have been dumped and emulated. For the Spanish and French version ROM dumps are needed. See this thread for details.

Provided Software

Two system disks were provided with this computer:

  • MSX-DOS1 with a text based menu driven interface
  • Home Office 2, that can be viewed as the sequel to MSX Home Office, provided with the VG-8230 and VG-8235 machines, mixed with ideas taken from Ease, provided with the NMS 8245 computer: it contains 6 applications (Cards - Text - Spreadsheet - Planner - Mailing - Printer Settings) and 4 additional submenus, including a Calculator, a Print Menu, a Disk Menu and a Tape Menu.

Pictures

Computer

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

Provided Software

MSX-DOS

Loading doshlp
doshlp Dutch
doshlp Index (Dutch)
doshlp French
doshlp index (French)

Home Office 2

Home Office 2 Main Menu
Home Office 2 Cards
Home Office 2 Text
Home Office 2 Spreadsheet
Home Office 2 Planner
Home Office 2 Mailing
Home Office 2 Printer Settings
Home Office 2 Submenu F2
Home Office 2 Calculator
Home Office 2 Print Menu F3
Home Office 2 Disk Menu F4
Home Office 2 Tape Menu F5

Specifications

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
Cartridge
Slot 2
Sub-ROM
Mirror
128kB
Memory
Mapper
Mirror
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.

Connections

  • 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