Contents |
Description
Computer
The Sanyo MPC-2500FD is the adaptation of the MPC-25FD computer, also known as the Wavy 25, for the Soviet Union. It was not sold in shops and could only be used in some schools or administrations.
This computer comes with only 1 cartridge slot and 1 disk drive, but there's a location planned for the addition of a second disk drive. It was mainly used by teachers in network with the MPC-2300.
It has a Russian keyboard and a non-standard modem with DIP (Dual Inline Package) switch (CALL COMINI does not work). This system seems to be similar to the switch on the Yamaha YIS-503IIIR and Yamaha YIS-805/128R2 computers. The dip switches probably allow to enable, disable and configure the modem.
It is unsure to what refers the C8 part added on the MPC-2300 label, maybe it means "Class 8" and would be similar to the system on the Yamaha computers: in this MSX-Network, up to 8 student machines are connected to a teacher machine using one of the floppy disk drives for centralised file storage.
| Brand | Sanyo |
| Model | MPC-2500FD |
| Year | 1987 |
| Region | USSR |
| Launch price | |
| RAM | 128kB (? in slot 3-2) |
| VRAM | 128kB |
| Media | MSX cartridges, DD floppy disks |
| Video | Yamaha V9938 |
| Audio | PSG (YM2149 integrated in MSX-Engine S3527) |
| Chipset | Yamaha S3527 |
| Keyboard layout | JCUKEN/Cyrillic + numeric keypad |
| Extras | 1 or 2 720kB 3,5" floppy disk drives, Serial port + dip switches + terminal software |
| Emulation | ROM dump needed. See this thread for details |
Firmware
The firmware is a communication terminal software that can be launched from MSX-BASIC with CALL INIT or _INIT.
Pictures
Specifications
The MPC-2500FD is a MSX2 with a Z80A from NEC (D780C-1) and an MSX-Engine S3527 from Yamaha.
The serial port can communicate up to 18600 bps.
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 | Sub-ROM Mirror | Mirror | 128kB Memory Mapper | ||||||
| Page 8000h~BFFFh | Mirror | |||||||||
| Page 4000h~7FFFh | Main-ROM | Disk ROM | Firmware | |||||||
| Page 0000h~3FFFh | Sub-ROM | Mirror |
- The 16KB Sub-ROM is mirrored over pages 0 to 3 in slot 2.
- The Disk ROM is a 16kB ROM - 4000h-7FFFh. However, the FDC registers are visible on all 4 pages.
- The firmware ROM is a 8kB ROM - 4000h-5FFFh for the LAN.
Connections
- RGB output
- Analog sound & Composite video
- Keyboard connector
- 1 serial port connector
- Data Recorder connector
- Centronics compatible Parallel port for a printer
- 2 general connectors (Joysticks, Mouse, Paddle controlers, etc)
- 1 cartridge slot