Summary of Features

• Calculator-sized KIM-1.

• Also compatible with the Apple-1 through its ROMs and I/O.

• Built-in 6502 programmable calculator (floating point library and display mode)

• Open source hard/software - see downloads here.

• Full emulation of 6502 & unaltered KIM-1 ROM on an Arduino Pro Mini (atMega328).

• Includes serial port (ie, you can use a PC as external keyboard/screen).

• Partial emulation of the 6530 I/O chips. Display driven through ROM, not yet by hacking of I/O registers.
   

• Extras:

• •  

    Special serial mode lets you use the KIM-1 fully on a 'bare' microcontroller, without the KIM Uno PCB.

  • Additional ROMs and preloaded of software in RAM let the KIM Uno start up with a tool set that any KIM-1 programmer really needed back in the day: Mini-assembler (Baum & Wozniak), Relocate & Branch calculator (Butterfield), Movit (Edwards).

  • Microchess built in to ROM. 'Dual screen' version with  optional display of chess board on serial port.

  • On-board 1K EEPROM serves either as an extra 1K of nonvolatile RAM or as 'solid-state tape storage'.
     

• The single connector on the Pro Mini serves as power connector, serial port and to update firmware.

• Expansion port provides I2C, accessible by or through the emulator. This makes it simple to add SD mass storage, or WiFi connectivity or just things like temperature sensors.

• Expansion port also allows any other microcontroller (STM32, esp32) to use the board without the on-board Pro Mini.