Tag Archives: Z80

Real easy Video fix for ZX Spectrum +2 (gray, “Toast Rack”)

Posted on December 19, 2020 by Administrator

I bought a ZX Spectrum +2 gray (toast rack) for my retrocomputer collection and it was the fail. The video output was bad and also there is a serious problem with RAM or ULA. But this article is about making … Continue reading →

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Thing to know: Z80 CPU clock

Posted on April 17, 2020 by Administrator

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 →

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ZX LCD

Posted on March 26, 2020 by Administrator

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 →

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ZX Spectrum inside CPLD

Posted on March 24, 2020 by Administrator

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 →

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My collection of old computer

Posted on March 1, 2020 by Administrator

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

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ZX Spectrum

Posted on September 4, 2006 by Administrator

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 →

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