uHMCU Alpha 0.1 – Interrupts and improved assembly

Term is over! I’m free for another Easter so hopefully I can get a couple of blog posts done though I’m taking a trip to visit Chernobyl so my levels of irradiation might end up screwing up everything electronic… (lol.) Assembler The assembler I’ve been using previously had been written quite a while ago and […]


I posted about my microcontroller design a couple of posts back. As it turns out, I had actually designed it wrong! I didn’t have the pipeline fully sorted meaning I couldn’t properly execute some instructions and some things weren’t working properly. After a quick stack overflow¬†question, I realised the error of my ways and figured […]

uHMCU FPGA Implementation

Having already designed the microcontroller in a simulation environment, I wanted to take it to the implementation phase. I’d previously shown an implementation of a timer in simulation so keeping the same test program, I wanted to make sure it worked in implementation! Firstly, I decided to replace the simulation ROM and RAM for IP […]

SSD1306 VHDL FPGA Implementation

I’ve been reading up as much VHDL as possible these last few days as I’ve recently found out that the majority of my summer is going to consist of writing it! After seeing loads of implementations for HD44780 16×2 character based LCDs, I couldn’t find any examples for the easy to get LCDs (by easy, […]