I'm barely into programming so I can't completely visualize how this would be done.
I'm thinking you would still need the m100/m102/m200 cable. Then interface the cable to a USB i/o device like https://ameridroid.com/products/usb-io-board The device connects to a modern computer that is running a Z80 emulator with CRT support like http://www.z80.info/z80emu.htm#EMU_CPU_PCDOS Now, could the emulator work properly with the data from a copy of the DVI ROMs? I know one is bios and the other a character set? Does someone have a binary file of the boot disk?