Category Archives: FPGA

ZX LCD

After building ZX Spectrum clone in CPLD I ported hardware code to another project and this is a bit simplier, but it uses some mono LCD from old copy mashine. Now I used only one CPLD, but I added additional … Continue reading

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ZX Spectrum inside CPLD

I found old ZX Spectrum clone made in Soviet Union in 90′s. It was my computer, I wrote several program on it and also, I wrote drivers for Espon printer on this hardware. This model has Soviet chip КР580ВВ55А (Intel … Continue reading

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Testing Commodore 6526/8520 copy in CPLD

There is quite expensive obsolete chip from various Commodore computers and peripherials- CIA/PIA MOS 6526 and a bit changed 8520 used in Amiga computers. This is “complex” peripherial interface adapter chip for 6502 processor or 68K chipset. It is quite … Continue reading

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Riddle

This is starting post about very interesting project. Try to guess what it is? This PCB is populated with serious stuff. Big square chip is Altera Cyclone EP1C6T144C8, 30 pcs of MBI5026CD, 8 pcs of HT04 (standard chips), 24 Fairchild … Continue reading

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