F256K

The F256k is a 65xx-based system. It's an encased form factor with a built-in keyboard. It includes the following features:

• 512K of Shared System & Video RAM (256k on the Rev A)
• 256k of flash
• 256k of cartridge ram/rom
• TinyVICKY Graphic Chip (CFP9599)
• 1x Simple 3-wire UART (RS-232 Port, Feather ESP8266 wifi, or Feather MIDI)
• 2x Atari Style Joystick Ports, 1x DB9 to interface to NES/SNES Adapter (For Rev B Only)
• 1x IEC Port to interface to Commodore Drives
• SID sound chip

It shares many similarities to the F256JR and programs may straightforwardly run on both.

The most common variety of the F256k uses the 6502 CPU. That said, the 65816 CPU can also be installed.

Kernels

There are three kernels for the F256k.

• The TinyCore MicroKernel (ships with the unit)
• OpenKERNAL (for those wishing to run software written for the CBM KERNAL)
• FoenixKERNAL, an open source, CBM-style layer also compatible with software written for Commodore 64 KERNAL