The Minstrel Issue 3 – a ZX81 compatible computer kit #VintageComputing @tynemouthsw
Tynemouth Software has released the Minstrel Issue 3 which is a ZX81 compatible computer kit.
This is a newly designed, ZX81 compatible 8 bit computer. Ever since I released the Minstrel Issue 2, which was a clone of the ZX80, I have wanted to extend this to be ZX81 compatible. This is Version 3.5, it’s taken four previous revisions (and rework in between) to get to this point. I’ll go through this in more detail in a later post, covering what went on with each of these and all the stages I went through.
The main change between the ZX80 and the ZX81 was integration of all the logic into a single ULA chip. I couldn’t replicate that, so I am sticking with discrete logic chips. As well as this, they solved one of the main problems with the ZX80. The way it was designed, it could either draw the screen, or run user code, it couldn’t do both at the same time. See the previous blog post for more about How the ZX80 Works).
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.