FujiNet for MSX Technical Overview
Components
Unlike prior serial-based FujiNets, on the MSX we connect directly to the data bus through the cartridge slot. This Data Bus Controller (DBC) is implemented with an RP2350B, with GPIOs connected to address lines, data lines, and a few other signals.
The DBC handles ROM emulation as well as communicating with the ESP32-based FujiNet Core via USB serial. In emulation, the DBC is implemented as an openMSX extension, and can communicate over TCP with a software FujiNet running on your computer.
Physical Configuration (Planned)
Host DBC FN Core
,---------------------------------,
MSX Computer <---|---> RP2350B <-------> ESP32 |
`---------------------------------'
FujiNet Cartridge
See: fujinet-hardware
Physical Configuration (Prototype)
Host DBC FN Core
MSX Computer <-------> RP2350B <-------> FujiNet-LWM
USB PC
See: fujinet-hardware
Emulated Configuration
Host DBC FN Core
,--------------------------------------,
| Emulated MSX <-> FujiNet Extension <-|-> FujiNet-LWM
`--------------------------------------'
openMSX TCP PC
I/O
The DBC handles memory-based I/O. There are 4 bytes reserved at the top of page 2 (0xBFFC-0xBFFF), which can be used to read and write data.
Serial Protocol
We use a SLIP-inspired protocol for sending and receiving command and data: https://github.com/FujiNetWIFI/fujinet-firmware/wiki/FEP-004
ROM Emulation
RAM Expansion
MSX BASIC Extensions
Disk Routines
MSX-DOS
Sound Chip Emulation
- Home
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- The Definition of Done
- Board bring up for FujiNet Platform.IO code
- The Complete Linux CLI Guide
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- Development Env for Apps
- FujiNet-Development-Guidelines
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- FujiNet Flasher
- Setting up a TNFS Server
- FujiNet Configuration File: fnconfig.ini
- AppKey Registry - SIO Command $DC Open App Key
- CP-M Support
- BBS
- Official Hardware Versions
- Prototype Board Revisions
- FujiNet Development Guidelines
- Atari Programming
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- C64 Programming
- ADAM Programming
- Testing Plan
- Hacker List
- FujiNet VirtualMachine
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