Archive for date: September 8, 2011

More on my 8080 emulator…

September 8, 2011 | Emulation, My Projects | By: Mark VandeWettering

I spent some more time hacking on my emulator today. The key to getting an emulator to work is to have good, clear references on how the system works, and some example code that torture tests your simulator. Except for the DAA instruction (more on that later), the documentation for the 8080 is pretty good, […]

On ARISSat-1 SSTV images…

September 8, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

I’ve been trying to get out and record more ARISSAT-1 passes, in the hopes of getting some nice SSTV images. If you follow @brainwagon on twitter, you are likely to see some of the more mundane images that I’ve been getting thusfar. I keep hoping to snag some truly great ones, but thus far, the […]

Yours Truly on the Zombie Tech podcast

September 8, 2011 | Podcasting | By: Mark VandeWettering

One of the more gratifying benefits of blogging is that it provides an opportunity to meet people who share your interests and enthusiasms. A few months ago, I became aware of the crew on the #savagecircuits IRC channel on AfterNET and started hanging out there. Various group members like Atdiy, whisker, JohnS_AZ, MakerDino, and Roy_Eltham […]

An 8080 emulator…

September 8, 2011 | Emulation, My Projects | By: Mark VandeWettering

A couple of days ago I got intrigued by this cool project which ran CP/M on an AVR. The basic idea was to equip an AVR with an external RAM, and then write a compact 8080 emulator to run on the AVR. Instead of floppy drives, the AVR accesses data stored on a small SD […]

RIP: Michael S. Hart, founder of Project Gutenberg

September 8, 2011 | Gutenberg Gems | By: Mark VandeWettering

Dan alerted me to the fact that Project Gutenberg founder Michael Hart passed away. On the Project Gutenberg site, Dr. Gregory Newby wrote a very nice obituary: Michael S. Hart – Gutenberg. I also liked this quote from Hart: “One thing about eBooks that most people haven’t thought much is that eBooks are the very […]