Construct a New ZX81

(*10*) ZX81 died, and whilst he attempted to determine the repair, he made up our minds to construct a brand new one. After all, development a circa-1980-something pc from new portions is a little daunting. Until you (*2*)get started with an current design that has all of it in a position to position in combination.

The PCB seems to be nice and we adore that the silkscreen presentations acknowledgments of tasks that helped the fashion designer, [Alejandro Sebastian]. The case is, in fact, three-D revealed. To start with, the facility LED didn’t paintings, however voltages appeared right kind and the board powered up.

The little field can in truth learn cassette tapes for the unique, which allowed it to load three-D Monster Maze. We aren’t positive why the facility LED didn’t paintings, however we’re guessing it’s backward or it — or the losing resistor — didn’t make a just right connection.

This looks as if a a laugh undertaking and could be an effective way to get a fairly authentic-looking ZX80 or ZX81 with no need to paintings too arduous. All of the recordsdata you wish to have are on [Alejandro’s] site and it looks as if the vast majority of the paintings could be sourcing all of the parts.

After all, you’ll be able to all the time move the FPGA course. In the event you construct one and need to be informed meeting for it, (*3*)test this out.

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