Tag Archives: DIY

Simple Sinewave generator

Posted on March 27, 2020 by Administrator

There is simple and good way to generate quite pure sine wave: This circuit is not very simple, but results are quite fine: output is pure sine wave. From the other side, this schematics have some minuses: it is hard … 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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AVR USB printer device and teletype

Posted on July 11, 2019 by Administrator

I have old teletype printer T-63 (it is made by RTF in Eastern Germany, clone of old Siemens Teletype). And the idea is about connecting it as USB printer to our-days computer. Easiest way is to connect it using RS232 … Continue reading →

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Building 8bit ATARI test ROM in easy way

Posted on May 3, 2018 by Administrator

I was experimenting with damaged Atari 800XL and I need to test it in low level. I wrote several lines in machine code and it was pain in the ass to fill data to ROM chip. After entering HEX data … Continue reading →

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