Tag Archives: Z80

Thing to know: Z80 CPU clock

I just only want to send notes to myself. Z80 CPU clock must be 5Vpp and pure TTL levels sometimes are too low for good and stable CPU work. Even this old CPU is very stable at 5Vpp clock, meanwhile … Continue reading

Posted in Anything, MCU | Tagged , , | Leave a comment

ZX LCD

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

Posted in Anything, FPGA | Tagged , , , | Leave a comment

ZX Spectrum inside CPLD

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

Posted in Anything, FPGA, MCU | Tagged , , , , | Leave a comment

My collection of old computer

For a long time, I collected a small collection of computer hardware. Here is the link to my Old Bits Collection.

Posted in Personal | Tagged , , , , , | Leave a comment

ZX Spectrum

Today I visited some old junk shop to check electricity counter and found lots of interesting stuff. I bought two things- Sega Game Gear and Sinclair ZX Spectrum personal computer. I payed 3LTL (~1USD) for Speccy. It is original ZX … Continue reading

Posted in Anything | Tagged , , | 4 Comments