JVC MSX MIDI interface
The JVC MSX MIDI interface is based on the Motorola MC6850 ACIA with a 2 MHz clock crystal. It also provides a DIN sync input. Electro Music Research also manufactured this interface for several other platforms, like the ZX Spectrum, Amstrad CPC and BBC Micro.
| Port | Description |
|---|---|
| #00 | DIN sync input. Bit 0: stop / start, bit 1: clock pulse. |
| #02 | MC6850 ACIA command / status. Note: use /64 divider. |
| #03 | MC6850 ACIA data |
The I/O ports are mirrored at #08-#0B.
Thanks go to gflorez for providing port and divider information.
Grauw