Firmware for the Soviet-era microcomputer I built. See this repository for more information.
To assemble this firmware, you will need z80asm set up and working. Then, just run z80asm --weird-mapping in the folder with the firmware source code, and you will get two ROM files as output, rom0.bin and rom1.bin. These files can then be run using the emulator, or can be programmed onto a pair of ROM chips for use in an actual computer.