ZX-Uno

My ZX Uno is working 100% now, thanks for the help. I’ve replaced the IDT SRAM with an ISSI SRAM.

I have ordered some ISSI 512KB SRAM chips, so I'm going to replace the IDT chip. I've tested the T24 core and it has even worse results, so I guess the IDT chip is not quite compatible with the ZX Uno. The ones I've ordered are IS61L5128AL-10TLI, so that means 512KBx8, 10ns and 3,3 volt supply volta...

Hello There, I've built a ZX Uno 4.1 from scratch and at the first test the FPGA was found and I could program the SPI flash and run some cores on it. So far so good, the problem is with the memory. I have soldered a IDT SRAM chip, type 71V424S10PHG. When powering up my ZX Uno it says 512K Ok, when ...

I found ferrite beads at AliExpress, they are high current and the right value. I did had to order a whole bunch of them, but let’s say they were dirt cheap .

Hello There, I want to build a ZX Uno myself and I have studied the BOM on the site. I can get most of the components at Digikey and for the components that are now obsolete at Digikey I have found alternatives. But, what I can't find are the SMD 0805 1K 3A magnetic beads. These are, correct me if I...