NanoMig

NanoMig is a port of the Minimig to the Tang Nano 20K FPGA development board.

This is based on the MiSTeryNano project and also relies on a M0S Dock being connected to the Tang Nano 20K. Alternately you can use a Raspberry Pi Pico or esp32-s2/s3 and use the FPGA companion firmware.

This is currently a very early work in progress. The current version is based on the MiSTer Minimig AGA code and runs many Amiga games and demos.

Current state:

• Minimig based on MiSTer Minimig AGA
• Kick ROM stored in flash ROM
• Up to 2MB chip and 1.5MB slow RAM
• OCS and ECS chipset (no AGA!)
• Up to four virtual floppy drives
• HDMI video and audio, PAL and NTSC
• Keyboard, Mouse and Joystick via USB
• Fully simulated

Planned features:

• Virtual IDE hard disk support
• Floppy and hard disk write support
• Accelerated 68020 support (may not fit)
• AGA support (may not fit)

Videos

These youtube shorts mainly document the progress:

• NanoMig #1: Amiga DiagROM booting on Tang Nano 20k
• NanoMig #2: USB keyboard and audio for the FPGA Amiga
• NanoMig #3: Booting workbench for the first time on Tang Nano 20k
• NanoMig #4: Running Amiga Pro tracker on the Tang Nano 20k
• NanoMig #5: Cheap FPGA Amiga finally runs Planet Rocklobster Demo
• NanoMig #6: First signs of life with the 68ec020
• NanoMig #7: Tiniest Amiga running Gods
• NanoMig #8: Booting from virtual Harddisk

What's needed?

The necessary binaries can be found in the project releases.

• nanomig.fs needs to be flashed to the FPGA's flash memory
  • openFPGALoader -fs nanomig.fs
• Kickstart 1.3 kick13.rom needs to be flashed at offset 0x400000 and 0x440000
  • openFPGALoader --external-flash -o 0x400000 kick13.rom
  • openFPGALoader --external-flash -o 0x440000 kick13.rom
• The latest firmware needs to be flashed to the M0S Dock
  • Or use a Raspberry pi pico or esp32-s2/s3
• A default ADF disk image named df0.adf should be placed on SD card (e.g. workbench 1.3)
• For the SD card to work all components incl. the M0S have to work properly