F256JR

The F256 Jr is a 65C02 based system that 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
• 2x Internal PSG Sound Chip
• 2x External SID Sockets

Hardware Setup

The PS2 mouse port may be wired to the keyboard port and then split out using a laptop PS2 splitter.

• Dual PS2 Port

If your Jr. is booting to a blank screen with a dark purple border, be sure that the RAM/FLASH jumper is set to FLASH.

Kernels

There are two kernels for the Jr.

• The TinyCore MicroKernel (ships with the unit)
• OpenKERNAL (for those wishing to run software written for the CBM KERNAL)

BASIC

The F256 Jr. ships with SuperBASIC: https://github.com/paulscottrobson/superbasic

Assemblers

• 64tass: https://sourceforge.net/projects/tass64/

C compiler

• cc65

Tools

• F256 Uploader
• https://github.com/pweingar/FoenixMgr