The MiSTeryNano is a port of the MiSTery Atari STE FPGA core to the Tang series of FPGA boards like the Tang Nano 20k FPGA board. Recently support for the Efinix T20 has been added.
MiSTeryNano implements the hardware of an Atari ST allowing it to run the original operating systems as well as the majority of games and productivity software of the Atari ST.
A complete MiSTeryNano setup also requires a supporting MCU acting as the FPGA Companion.
For support and more information please visit the Atari forum.
The MiSTeryNano's current features are:
- Atari ST/STE
- Complete Atari ST/E chipset
- ST or STE configurable
- Cycle exact 8 MHz 68000 CPU
- 4MB RAM, optional 8MB STRAM
- color and monochrome video via HDMI
- YM2149 and STE DMA sound via HDMI
- Blitter
- Supports most TOS versions
- Full IKBD implementation
- Mapped to USB via FPGA Companion
- Mouse and keyboard via USB
- Joystick via USB or dedicated IO pins of Tang Nano 20k
- Floppy disk images
- Read and write support for drive A: and drive B:
- Images stored in .ST format on regular FAT/exFAT formatted SD card
- ACSI harddisks
- Read and write support for ACSI 0 and 1
- Tested with AHDI, PP's driver and HDDriver 12.03
- Images stored in .HD format
- MIDI
- Physical MIDI-IN and OUT
- Optional custom carrier board like the MiSTeryShield20k or MiSTeryShield20k RPiPico
- Optional case
- Runs on various Tang variants
- Supports different MCUs for the FPGA Companion
These videos primarily document the progress during development:
- MiSTeryNano #23: Going online as if it's 1990
- MiSTeryNano #22: Running Atari ST demo on Efinix Trion T20 FPGA
- MiSTeryNano #21: I built a half sized keyboard for my FPGA Atari ST
More ...
- MiSTeryNano #20: Atari STE on Tang Primer 25k FPGA
- MiSTeryNano #19: Atari STE Stardust on Tang Mega 138K FPGA
- MiSTeryNano #18: Cheap RGB LCD for Atari ST in FPGA
- MiSTeryNano #17: C64 on Tang Nano 20K
- MiSTeryNano #16: Atari ST MIDI Space Quest 3 on Roland MT32
- MiSTeryNano #15: Power Without the Price: The Tang Nano 20k is the cheapest Atari ST
- MiSTeryNano #14: Cubase MIDI audio replay with Atari ST FPGA and SAM2695
- MiSTeryNano #13: Atari ST in Tang Nano 20k FPGA running Cubase 3 from Harddisk image
- MiSTeryNano #12: Atari ST first boot from virtual hard disk
- MiSTeryNano #11: Advanced SD card for FPGA Atari ST
- MiSTeryNano #10: New OSD for the FPGA Atari ST
- MiSTeryNano #9: Tang Nano 20k as USB host
- MiSTeryNano #8: Atari ST with USB keyboard and touchpad
- MiSTeryNano #7: Tang Nano 20k running Atari ST Oxyd2
- MiSTeryNano #6: B.I.G. DEMO
- MiSTeryNano #5: Playing Atari ST Frontier
- MiSTeryNano #4: Drives and Blitter
- MiSTeryNano #3: We got a rainbow!
- MiSTeryNano #2: Booting TOS 1.04 for the first time
- MiSTeryNano #1: Is the Tang Nano 20k the cheapest and smallest Atari ST?
In order to use the MiSTeryNano the following things are needed:
- Tang FPGA board like e.g. the Tang Nano 20k to run the MiSTeryNano core itself
- MCU board like the M0S Dock to run the FPGA Companion to connect USB keyboard and mouse
- Breadboard to wire everything up and some jumper wires, or
- a MiSTeryShield
- a USB-C to USB-A adapter to connect regular USB devices to the M0S Dock
Many other variants can be built using various Tang FPGA boards and different MCUs.
The installation of MiSTeryNano on the Tang Nano 20k using can be done using a Linux PC or a Windows PC.
See the trouble shooting guide if you run into problems.
The properly flashed Tang Nano 20K will boot into the Atari ST desktop even without anything else connected. But in order to use the system you need at least a keyboard and most likely also a mouse. These are usually connected through the M0S Dock.
Additional connections exist for a physical DB9 joystick or Atari ST mouse and MIDI IN and OUT. The usage of these pins is optional. They can just be left unconnected. A joystick may then be connected via USB instead.
The MiSTeryNano is mainly controlled through an on-screen-display (OSD) overlaying the main Atari ST screen. The OSD is opened using the F12 key. It can then be used to select floppy and harddisk images and to configure the running system.