Full disclosure: [Óscar] isn’t nine now, but he was in 1988 when he wrote LOCS, a drawing program in Z80 assembly modeled after Logo. You can see a demo of the system in the video below. You might ...

Some time ago, a desire to familiarize myself with Microchip PIC24/dsPIC assembler language programming coincided with digging out the listing for a FORTH programming language interpreter/compiler I ...

Few processors have found themselves in so many different devices as the venerable Z80. While it isn’t powerful by modern standards, you can still use devices like this Cidco MailStation as a terminal ...