Ben Eater has a series of videos building out a 6502 based computer. So far we have videos detailing how to print out “Hello, World!” on it. It doesn’t seem like much right now, but it was a really interesting process. Besides, just look at how cool this looks:
There have been 5 videos detailing how to build this up from the processor to the ROM chip and the 65C22 interface chip. Also we’ve been programming this from the basic resistors set to specific no-op codes to the assembly language that prints “Hello, World!” here. In the next video we’ll be adding a RAM chip to the whole thing. It is pictured here but isn’t attached to the processor yet. So that the processor can store data as it runs. I’m not sure how we’ll attach it. There’s hardly any room for wires in this mess as it is now.
As it happens someone has worked ahead off the schematics that Ben produced and created a heck of an operating system for the computer. That can be found here.
I’m looking forward to doing more with this little computer.