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Author Archives: Administrator
TOP2004 programmer review
I have Willem eprog programmer, but I was sick changing LPT cable each time I need to reprogram some chip. Also, Willem damaged two chips of one manufacturer. I don’t like that small DIP switches too. Also, Willem can’t program … Continue reading
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Few words about CPLD
Just short story about my experiments using CPLD chip and Lattice software. I forced myself to use and learn about programmable logic chips. As I wrote in my older post, I have very small inventory of the chips and was … Continue reading
Universal power for breadboard
Very often I need regulated PSU when playing with breadboard. And I need negative power supply too. Especially when doing something with operational amplifiers or old LCD modules. Typically I use 78xx or 79xx regulators in my experiments. But last … Continue reading
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ISP cable schematics
I decided to put all ISP/JTAG cable circuit diagrams (schematics) in one page for easy navigation. The schematics are gathered in the internet in various web pages and datasheets. Cables are not designed by me, but I made some of … Continue reading
Chip is too small
I decided to connect LCD monitor to my CPLD project. LCD monitor is without frame buffer RAM, without controller- just simple LCD matrix. All data is dynamically fed to LCD. For my first experiments I was using Lattice isp2032VE. The … Continue reading
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CPLD and FPGA
Some introducing to programmable logic chips or just my throes… I was forced to learn about programmable logic. The mental outfit is zero. I only know that there are such devices. The most simple and oldest CPLD (complex programmable logic … Continue reading
Controllerless LCD on printer port
It was told that it is impossible to connect standard controller-less LCD screen to the computer’s printer port. The main reason it is not working is the speed of the computer. In fact, the speed of printer port. I decided … Continue reading
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ispDownload cable
To program CPLD programmable logic) devices you only need very simple isp download cable. The cable is simple if we use computer’s printer port. For my experiments I removed Lattice isp2032VE chip from old wireless router and soldered it to … Continue reading
Graphic LCD to PC
From old device I removed controlles graphic LCD screen and part of the mainboard with Toshiba controller. As controller was with all hardware, I just connected everything with air wires to PC printer port using my breadboard. There are two … Continue reading
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LCD module test
LCD module test or how to connect the beast to PC printer port. I received few requests how to test the LCD module using easy to obtain software. Maybe people are to lazy to search internet… So, here is simplified … Continue reading
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