Philips NMS 8255
This page was last modified 16:54, 18 June 2018 by Mars2000you. Based on work by Gdx and Rderooy and others.

Contents

Description

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.

Introduction price: ƒ 2295.

Brand Philips (Manufacturer: Sanyo)
Type NMS 8255
Year 1987
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)

Pictures

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

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.

Slot Map

Slot 0 Slot 1 Slot 2 Slot 3-0 Slot 3-1 Slot 3-2 Slot 3-3
Bank C000h~FFFFh Cartridge
Slot 1
Cartridge
Slot 2
Sub-ROM
Mirror
128kB
Memory
Mapper
Mirror
Bank 8000h~BFFFh Mirror
Bank 4000h~7FFFh Main-ROM Disk ROM
Bank 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)

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)

Links