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| | * [[The TinyCore MicroKernel]] | | * [[The TinyCore MicroKernel]] |
| | * [[OpenKERNAL]] | | * [[OpenKERNAL]] |
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| − | == MicroKernel ==
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| − | The TinyCore MicroKernel comes installed by default. It is an advanced kernel with an integrated IP stack.
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| − | Flash blocks are available from both the kernel/dos github repo: https://github.com/ghackwrench/F256_Jr_Kernel_DOS
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| − | Flash blocks tested with the latest SuperBASIC may be found in the source/releases folder of the SuperBASIC project: https://github.com/paulscottrobson/superbasic
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| − | When using the MicroKernel, the dip switches act as follows:
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| − | <pre>
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| − | * 8 - enable gamma color correction
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| − | * 7 - 640x480x60 if on, 640x400@70 if off. Not presently implemented.
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| − | * 6 - Enable scanning of a CBM keyboard (F256-Jr); Sound expansion installed (F256-K)
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| − | * 5 - SIDS are installed
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| − | * 4 - SLIP enabled
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| − | * 3 - Serial description: If SLIP is enabled, ON implies WIFI mode; if SLIP is disabled, ON implies MIDI mode.
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| − | * 2 - Not yet assigned
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| − | * 1 - If ON, the kernel will auto-start the first program found in the first 64k
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| − | </pre>
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| − | == OpenKERNAL ==
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| − | OpenKERNAL is a clean-room clone of the CBM KERNAL as described in the C64 documentation. It may be found here.
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| − | Note that it is presently somewhat out of date, as the FPGA's keyboard and IEC interfaces have changed.
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Revision as of 12:31, 23 January 2023
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
Kernels
There are two kernels for the Jr.
Hardware Setup
- Port pin-outs
- Adding a mouse port on early Rev B Boards
Documents
Hardware Setup
Ports and Connectors
