Sinclair ZX80 / ZX81 Forums

I have now released my first CB2 game: it is a port of my game H-Tron that I released two years ago for the ZX81 and since then for many more Z80-based systems. Now I have entirely rewritten it in BASIC. The CB2 version provides only one-player mode (which is the most important mode anyway), I had ...

Hi Robert! Thanks for making and sharing this video with the rest of us. I really enjoyed watching this, thumbs up! When you have any other videos I am sure everyone would love to watch. Read the manual and enjoy every bit of your CB2 micro! Ps. I have also uploaded the video to the CB2 micro channe...

CB2 micro KIT unboxing by Dave (eevblog)

https://www.youtube.com/watch?v=jgp5BOQEeAs

Thanks Dave!

Hi,
I have just completed all the networking scenarios for the CB2 micro.
In this last example http://cb2.qrp.gr/extensions/#3.2.4_Con ... icros_a_PC three CB2 micros are connected together with a PC and a dial-up modem in the same network and sharing data.
Enjoy!

Hi, I have made progress on the LAN networking for the CB2 micros. See here http://cb2.qrp.gr/extensions/index.html#3_Local_Area_Network Networking works as designed! I am going to test the rest of the cases but it's really fun to see all the computers in the LAN to communicate to each other! Have fun

I am now testing these: https://www.aliexpress.com/item/32858555968.html These should do the conversion fine I can confirm that this converter is working fine on my setup (numerous homecomputers). This one is technical the same: ligawo-scart-hdmi.jpg I have another (from 2011) converter that I test...

Some extensions are very usefull, i.e. the Dataflash to store programs or the memory extension, the Printer connector, the serial interface. Maybe it is possible to design a pcb with most/all options onboard and the user can decide (via jumperfield?) which option he will finally use / or which part...

Well if there's a pin header on the board, you would be able to stack shields on it like the Arduino. Nice idea! Now there are just pads on the board in different places, but I could bring all the connections to a single "bus". It would require a total re-design of the PCB thought, I am not going t...

Well done! Any plans to integrate those extensions to a single pcb? A CB2 „Pro“? Would you really want to do that? It would increase the cost and although some people may like it, some others may not. I mean If I have a scart TV why should I use composite, since scart is by far superior? Or for exa...

I have added quite a few extensions in the extensions page of the CB2 micro. All of the presented extensions have been tested. More to come
http://cb2.qrp.gr/extensions