UK101

UK101 Hardware emulator on Stellarpad using Energia and ESP8266 / ESP32 with Arduino.

See blog article.

Software

• 6502 Emulation library
• uC-Makefile

Hardware

• See the 6502 Emulation library's hardware requirements and wiring.
• See config.h for configuration options.

Firmware

Some of the function keys on the PS/2 keyboard control the machine's inner workings:

• F1: full reset (cpu, keyboard, SD card, etc.)
• F2: advance tape
• F3: rewind tape
• F4: toggle monitor rom
• F5: change display resolution:
  • 40x30, 40x15, 45x30, 45x32, 45x16 (on UK101)
  • 32x30, 32x32 (on Superboard)
• F6: checkpoint to file (default CHKPOINT.xxx)
• F7: restore from checkpoint (select image with F2)
• F8: select destination device for current file (Tape, A:, B:, C:, D:)
• F10: toggle CPU debugging on serial port

Keyboard

• Some keys on the Numeric Keypad have special mappings:
  • NUM: ^E, 0: ^Q
  • 2: ^F, 4: ^A, 6: ^D, 8: ^S
  • /, *, -, +