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 ...