As the DLDI interface means I can now load external files (hoorah! cheers Chishm) I've finally done some updates to DS81, the ZX81 emulator.
It now supports some hi-res games and includes a basic file selector for lazy typists who have short-memories for file names. There is even a simple machine code monitor so you can look all wind-swept and interesting on the bus to work as you watch Z80 opcodes scroll up the screen.