Quoting Roger Jowett <rogerjow...@gmail.com>:
velesoft reckon they have a spectrum edge connector adapter but ive been to prague twice and they sure as hell aint very friendly - pity the dma and accelerator with 128 kompatiblity might have been useful if they worked - joystick port on a mouse interface - mind you ps2 rollerball mouse support
Shame the SAMVOX2 never appeared .. :(8056 co-processort, DMA audio, and a few other odds and sods if I remember right :(