Raspberry Pi Zero & Zero 2 Multi-Core Co-Processor Adapter Boardfor the BBC Model B, B+ and Master 128 using PiTubeDirect firmware** New version compatible with HDMI output of latest Hognose firmware **Please see my other listings for HAT and Model A versions compatible with the larger Pi boards
This is a Buy-It-Now sale, for a new Raspberry Pi Zero Co-Processor adapter board, for the BBC Micro range Model B, B+ and Master 128. It is also suitable for the Acorn Electron, providing you have a compatible tube interface. It works with all versions of the Zero.
In this sale you are buying just the adapter PCB assembled and tested, that allows you to plug your own Raspberry Pi Zero into it, and once fitted with a suitable MicroSD card and firmware, it can operate as a Multi-Core Second Processor system, running at lightning speeds! The Pi Zero that you use must be fitted with the GPIO 40 way header.
Once assembled with a Pi Zero and firmware, this clever device doesn't just limit you to a 6502 running at 3, 4, or even 16MHz, it can emulate many of the different Co-Processors available to the BBC Micro over the years, such as:
- 6502 running at either the original 3MHz, or a blistering equivalent of over 300MHz
- A Z80, running at 60Mhz for CP/M
- An 80286 for DOS
- A 32016 Cambridge Co-Processor for running the Panos Operating System.
- A 6809
- A 9MHz emulation of the original ARM Evaluation system
- AnativeARM Co-Processor, running at 1Ghz!
This board is a universal type, that plugs into the Tube port of any BBC Micro via a 40 way ribbon cable, and draws power from the Tube port itself, so no extra power supply is required. It is designed to be mounted internally into the case for maximum protection, and is not the type that plugs directly into the TUBE port and sits underneath the machine. I also supply a dedicated internal version for the Master 128, that plugs into its internal Tube connector, please see my other listings.
Comes as just the PCB as pictured in the first three photos. The other photos are representative of how it looks assembled, and the system running. You will need to source your own Raspberry Pi Zero, Zero-W or Zero 2, along with a MicroSD card for the firmware which is availableon the project GitHub page, or on the downloads page of my website. It is not suitable for other Pi's such as the Model A or B. I sell an adapter specifically for the Model A, or a Pi HAT adapter if you wish to use one of the larger Model B Pi's, please see my other listings. You'll also need a 40 way connector cable to connect to the tube. You may also want some self adhesive mounting posts (3mm), and some supports for the Pi itself. I can provide any of these extra bits if you need them at extra cost.NEW - This adapter is my new Issue 3 version, which allows access to the HDMI port. Previous versions, and other adapters you may see on and elsewhere, obstruct the HDMI port, meaning you couldn't make use of it. The new Hognose firmware allows the HDMI port of the Pi to be used as a second Beeb display. It's not a screen mirror, you will still need to use your original RGB output, but it's yet another function of this amazing device, and is great for programming and graphics using the 6502 or ARM cores.
The Pi Zero uses a Mini C type HDMI cable, to either regular HDMI, or DVI.
If you would prefer a complete setup, that comes with everything you need to plug and go, please see my other listings.
Please note, that any second processor needs the Tube Host code inside the BBC Micro to run. This is always fitted in a Master 128, and is usually present in a B+. However, a Model B may not have it fitted, and you may need an additional DNFS ROM to allow this to work. If you're not sure, send me a screenshot of your computer displaying the results of a *HELP - I should be able to tell from there if it's needed or not, and supply it at the same time.
No BBC Micro software for the Co-Processor itself is included, but this can all be downloaded from the net, or I can supply boot disk images for various cores on request free of charge, to use on a GOTEK USB Floppy drive (Please see my other listings if you're interested in one of those as well).
**UK POSTAGE BY ROYAL MAIL **
** Worldwide shipping by the Global Shipping Program **
We also supply GOTEK USB drives for the BBC Micro, as well as Raspberry Pi multi-core Second processors in internal and external versions.As well as 1770 Disk Upgrade kits, 4 way switchable OSs for the Master 128 and 2 way for the B+, we can supply other refurbished BBC Model Bs and Master 128s to your specification.Please check my other items for sale, or if they've sold out on my listings, please contact me for details.
