Constructing a brand new ZX Spectrum from all new elements – Misplaced Retro Tapes
This collection of posts will likely be documenting my quest to constructing a ZX Spectrum utilizing as many nonetheless out there elements as doable, I’m not positive but if it’s fully doable, however because of the work of individuals like Charlie Ingley who created a model new substitute ULA chip, I’m feeling assured.
I used to be going to redraw the board and get it printed, nevertheless my preliminary analysis alerted me to these reproduction Issue 3B boards available on PCBWay from PABB – the Difficulty 3B board was the most typical board for the 48k Spectrum, and is an effective place to start out.
I ordered the boards (nicely 5 of them as a consequence of minimal order portions) and began what resistors, diodes, crystals, transistors and capacitors from the unique schematics, using a list from here, I might nonetheless get from suppliers equivalent to Farnell. I have reproduced my findings here in a desk I’ll maintain up to date.
