Category Archives: Electronics

Z80 Monsputer: CPU board cleanup

I posted some pictures of the Monsputer CPU board, which had numerous ugly patches. By substituting a smaller chip with more pins, I was able to put all the glue logic in the CPLD. Here is the top and bottom … Continue reading

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Mitosis in a prepared microscope slide

A long while ago (late 70’s) in high school, I was observing a prepared microscope slide on a microscope. We had to draw a picture of a cell. Like finding a 4-leaf clover, I stumbled over a cell frozen during … Continue reading

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Point to point wiring with magnet wire

I’m currently rewiring a part of the Monsputer’s CPU board that was implemented with several patches. I’m reusing an Atmel CPLD used for another board. A problem with this chip: it’s a TQFP package. Without a PCB, it’s difficult to … Continue reading

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One of my first projects

I found some picture on the web, several years ago. It happens that I made a similar project a long time ago, but there’s something a bit special about the pictures. I have sold my project a long time ago … Continue reading

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AVR Man and Wasteman

For those reading my previous post, I’m still alive! (And human!) While I’m tinkering with various processors, one of my favorites is the Atmel microcontrollers. A while ago, they had some comicbook style hero called AVR Man and his nemesis … Continue reading

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Problem with assembler files when compiling a C project with SDCC and Codeblocks

I was trying to compile a simple C project (SDCC for Z80) with codeblocks. As usual, I stumble easily on minor problems, taking much time to look up for a solution. This time, it’s a small project that doesn’t want … Continue reading

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Altera Quartus, combining Verilog and VHDL

In my previous post, I ported the Multicomp from Grant Searle to an Altera Cyclone II FPGA platform. The Multicomp peripheral are quite minimal, and I wished to use the on board facilities. Code for these were supplied in Verilog. … Continue reading

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