Rodrigo

Photo by  Nick Hillier  on  Unsplash Hi! I'm continuing my blog about my SPO classes. After a brief introduction in Assembly, we are good to hit Lab3. Our instructor kindly let us choose one project out of five. And of course, we decided to go with the easiest! We had to do a two-digit numeric display where the numbers are incremented or decremented by pressing plus and minus key in the keyboard. Soon the challenges were reviled as we dive into how to code it. Should we treat every digit separated or together? How to print them into the display? After a moment of reflection, we decided to handle the digits independently to facilitate the printing display. Also, we had to add a bit-map representation of the numbers because the 6502 chip doesn’t know any font. In this post, I’ll show you the code with the logic to increment and decrement without displaying anything. You can monitor the address $13 and $14 to make sure that it is working. Let me expla

Photo by  Jonas Svidras  on  Unsplash Last week on my SPO course, I had my first experience writing Assembly code. I won’t lie; it was struggling. For me, Assembly is like the Latin of the codding languages and “carpe diem” wasn’t my first lesson. Hexadecimal, binary and a list of instructions is a must know to guarantee survival. Our instructor introduced us to the 6502 processor: it is an old school chip that was used in many home solutions such as PCs and video games. Internally, it has three general-purpose registers, three special-purpose registers, memory and input and output ports. Fortunately, there are emulators on the internet that helps us to focus on the development, hiding the electronic part from us. http://6502.cdot.systems/ Using the emulator, our first task was to copy, paste and execute a piece of code to change the colour of every pixel in the display matrix. That was easy! The result was a yellow screen. Then we were asked to introduce so

Photo by  Mikhail Vasilyev  on  Unsplash I’m Rodrigo, a tech guy that never stops to learn. I’ve more than ten years of experience working as an IT Consultant, Java/Web Developer and DBA Oracle, in short, Full Stack Developer. This blog is a way to contribute to the community that gave me so much knowledge and, mostly, because it is a requirement for my SPO600 class at Seneca College. Setting up a blog was a long-time desire. Hopefully, I like it and extend it to other topics later on. However, here I’ll follow the agenda provided by my professor. My first assignment is to research how to contribute to opensource projects. I picked Angular and Spring-Boot to dig in. Both licensed under MIT and Apache 2.0 , respectively, have a clear code of conduct and contribution instructions, which are very similar to each other. Also, both use GitHub to share its source code, documentation and track issues. https://github.com/angular/angular/blob/master/CONTRIBUTING.md https:/