UK1541 is a real time disk drive emulator developed by Krzysztof Switajskiwith. Features: cycle-exact 6502 and VIA's emulation. Cortex M0, 48Mhz microprocessor, 16kB Flash ROM, 4kB Ram, SD card (8GB), LCD TFT Screen and compatible with .d64 files (35 / 40 track).