Robert Morrison

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ZX Spectrum PlusD (clone) disk interface. The last of the parts arrived today so I blew the EPROM and programmed the GALs. And it worked!

An almost fully populated PlusD interface circuit board with three ICs missing. Using a GUI on an ancient Windows laptop to operate a USB programmer (a cheap TL-866-II clone) to program a GAL. Picture shows the programmer device sitting on the open laptop with the GUI on screen. A slim 20 pin IC is inserted in the programmer, and the device has a brightly glowing red LED.PlusD interface connected to a 48K ZX Spectrum. Floppy disks, drives and ribbon cables are strewn around. Yellow and red LEDs are brightly glowing on the PlusD. It has no casing, so the circuit board is visible.