electronics, z80, embedded, retro computing, 8051, avr
A few years ago, I shared a Z80 “single board computer” design called MGH80… it was meant to be a bit of an “Arduino of the 80s” / “simple Z80 experiment platform”… I finally had a chance to complete the project. In this post, I’ll share some of the design aspects and implementation details. The Continue reading MGH 80 the Arduino of the 80s
I'm sharing a few examples of how people use the EPROM emulator.
As always, all source code and design documents are on my github page: EPROM-EMU-NG on GitHub I recently posted an article that shows how people ended up using the emulator, check it out there: EPROM emulator NG use cases. EPROM EMULATOR An Introduction. Well, before I explain what an EPROM Emulator is, I should Continue reading EPROM EMULATOR
This article is mainly aimed at my Polish readers, owners of the educational computer CA80, but the i2c bit-banging for Z80+8255A may come useful on other Z80 platforms. As always source code can be found on my GitHub page. 8255 port control challenge. There are many websites that cover i2c in detail, so I m not Continue reading i2c bit-banging on Z80 with 8255A.
Intro. I ve been trying to get back into some of my retro computer programming . By the way, computer is a bit of an overstatement. As my first computer was a very special device, that looked like a calculator and only had an 8 digit 7 segment VFD display it was called CA80 and was Continue reading ERMAX100 EPROM Emulator Revival
In my Commodore 64 Power Supply magic post, I talked about the internal power supply and how not everything that you see when you quickly glance is as obvious as it seems. Yet again I m faced with a similar situation. I needed an external power supply for one of the machines that I purchased recently, and I Continue reading Commodore 64 Power Supply 902503-02, part 1.
Note: At the beginning of this post, I cover some basic power supply stuff, so if you already know a lot skip to the later part where I cover the more interesting 12V DC rail. Not as obvious as it seems. While browsing SAMS Commodore 64 Troubleshooting Repair Guide I came across the block Continue reading Commodore 64 Power Supply magic.
I need to test my Commodore 64 but I have no floppy drive, cassette deck or cartridge This was the dilemma I had one evening after repairing my newly acquired Commodore 64 machine yes I will write a blog entry about it and link it here later. I really wanted to load a game Continue reading Pi1541 in 30min with (almost) no soldering.
Introduction to Hyperflex (HX) API. Note: All code related to this post is hosted on GitHub Cisco publishes a pretty extensive documentation related to the HX API. Head to the HX API Documentation page hosted on Cisco s DevNet. You can also point your browser at the controller VM to access the live API documentation build into the system, Continue reading Using Cisco Hyperflex API with Python
This is the excerpt for your very first post.