Contents |
Description
The Fujitsu FM-X (or MB25150 as indicated on the label) is one of the first MSX models to be released, and the only MSX computer ever made by Fujitsu. Fujitsu had another competing computer range, in the form of the FM-7, FM-8 and FM-77, which were based on a Motorola 6809 processor.
The FM-X has only 16kB RAM and lacks a printer interface. However, it is possible to add this interface and an additional 16kB RAM by inserting the Fujitsu MB22451 cartridge in the 60-pin expansion slot.
This slot can also be used to connect the FM-X to the FM-7 by inserting the Fujitsu MB22450 interface. This combination extends the capabilities of both computers.
This model has an internal speaker.
The official price is ¥49,800 (and ¥126,000 for the FM-7).
Size: 380 x 245 x 80 mm (WxLxH)
Weight: 2.6 kg
| Brand | Fujitsu |
| Model | FM-X or MB25150 |
| Year | 1983-12 |
| Region | Japan |
| Launch price | ¥49,800 |
| RAM | 16kB in slot 0 |
| VRAM | 16kB |
| Media | MSX cartridges |
| Video | Texas Instruments TMS9928ANL |
| Audio | PSG (AY-3-8910) |
| Chipset | none (separate IC's) |
| Keyboard layout | QWERTY/JIS |
| Extras | Expansion slot with a 60 pin connector, reset button, switch to select video source, built-in speaker |
| Emulation | ROM dumped and emulated. The FM-7 connectivity is not emulated by any emulator |
Pictures
Specifications
The FM-X is a MSX1 with a Z80A from Zilog (Z08400A).
Although it has a standard Texas Instruments TMS9928ANL VDP, the RGB colors are different because an additional circuit reworks the palette to be the same as used on the Fujitsu FM-7. It's encoded in 3-bit RGB, reducing the palette from 16 colors to 8 colors.
When using the CVBS input of a monitor, the same color limitation can be seen, but the colors are even more different, very close to CGA or ZX-Spectrum.
Slot Map without Fujitsu MB22451 or MB22450
| Slot 0 | Slot 1 | Slot 2 | Slot 3 | ||||
|---|---|---|---|---|---|---|---|
| Page C000h~FFFFh | RAM | Expansion Slot | Cartridge Slot | ||||
| Page 8000h~BFFFh | |||||||
| Page 4000h~7FFFh | Main-ROM | ||||||
| Page 0000h~3FFFh |
Slot Map with Fujitsu MB22451
| Slot 0 | Slot 1 | Slot 2 | Slot 3 | ||||
|---|---|---|---|---|---|---|---|
| Page C000h~FFFFh | RAM | Cartridge Slot | |||||
| Page 8000h~BFFFh | RAM | ||||||
| Page 4000h~7FFFh | Main-ROM | ||||||
| Page 0000h~3FFFh |
Slot Map with Fujitsu MB22450
| Slot 0 | Slot 1 | Slot 2 | Slot 3 | ||||
|---|---|---|---|---|---|---|---|
| Page C000h~FFFFh | RAM | Cartridge Slot | |||||
| Page 8000h~BFFFh | Part of FM-7 RAM | ||||||
| Page 4000h~7FFFh | Main-ROM | ||||||
| Page 0000h~3FFFh | FM-X BASIC |
Connections
- RF output
- TTL Digital RGB output (DIN 45326, 8 pin)
- TTL Digital RGB input (6 pin)
- Analog sound output (mono)
- Tape recorder connector
- 2 general connectors (Joysticks, Mouse, Paddle controlers, etc)
- One MSX cartridge slot (on right side, using slot 2)
- One 60 pin expansion slot (on left side, occupying slot 1) to use for specific module
Links
- Fujitsu FM-X flyer (Japanese)
- Wikipedia about FM-X (Japanese).