Philips NMS 8245 Home Banking
This page was last modified 10:46, 11 November 2021 by Gdx. Based on work by Mars2000you and Rderooy.




This special version of the Philips NMS 8245 was used in some Italian banks and at the Milan Stock Exchange for different financial operations. In some way, it was the prelude to the extension of these operations of Home Banking with the Videotel machines (NMS 3000 and NMS 4000 released in 1988, HCS 80 released in 1990).

The NMS 8245 can internally receive a third cartridge slot, this feature is used here to add an expansion that includes 256kB RAM and a modem with built-in RS-232C interface (see - broken link - for details about the addition of the 3rd cartridge slot).

Brand Philips (Several clues suggest that mainboard is manufactured by Kyocera)
Model NMS 8245 Home Banking
Year 1987
Region Italy
Launch price
RAM 384kB (128kB in slot 3-2 and 256kB in expansion)
VRAM 128kB
Media MSX cartridges, 2DD floppy disks
Video Yamaha V9938
Audio PSG (custom chip integrated in MSX-Engine S3527)
Chipset Yamaha S3527
Keyboard layout QWERTY
Extras 720kB 3,5" floppy disk drive, reset button, third cartridge slot, expansion with 256kB RAM and modem, banking software on cartridge
Emulation ROM dump needed. See this thread for details


A banking software was provided on a cartridge that was inserted in the 3rd cartridge slot. Its small format was conceived to make removal difficult, which means that it is not easy to use this 'enhanced' NMS 8245 as a 'normal' NMS 8245.


Philips NMS 8245 Home Banking expansion (inside)
Philips NMS 8245 Home Banking expansion (modem PCB)
Philips NMS 8245 Home Banking expansion (3rd cartridge slot and RAM expansion)
Philips NMS 8245 Home Banking expansion (detail of modem PCB)
Philips NMS 8245 Home Banking expansion (back)
Philips NMS 8245 Home Banking cartridge


The NMS 8245 Home Banking is a MSX2 with a Z80 from Zilog (Z8400APS) and the MSX-Engine S3527 from Yamaha.

The RAM is in slots 3-1 and 3-2. First cartridge slot is in front, second cartridge slot is in back, third cartridge slot is internal and used by the expansion unit.

Slot Map

Slot 0 Slot 1 Slot 2 Slot 3-0 Slot 3-1 Slot 3-2 Slot 3-3
Page C000h~FFFFh Top
Page 8000h~BFFFh Mirror
Page 4000h~7FFFh Main-ROM Disk ROM
Page 0000h~3FFFh Sub-ROM
  • The Disk ROM is a 16kB ROM - 4000h-7FFFh. However, the FDC registers are visible in pages 1 and 2.