Archive for April, 2014

Orwell graphics.

April 20th, 2014

With Orwell updated and the new video working I started looking at adding graphics commands. I started with plot, easy enough, to draw a pixel at a given location on screen. Since it is hard to add new functions that take parameters in MS Basic I did it the way I have done previous commands […]

Orwell video updated.

April 13th, 2014

I finally got around to successfully updating Orwell’s video to Grant Searle’s video board. So Orwell now supports 80 characters as well as 40 character, bold and double size outputs. It also now has simple pixel plotting graphics! Once my¬†74HCT166s did finally arrive I was able to just plop one into the breadboard I had […]

Orwell Documentation

April 11th, 2014

Below is the documentation for ORWELL. Unfortunately WordPress messes up the formatting from the original document and I can’t be bothered redoing it all here! But all the text is here below.     ORWELL An 8 bit personal computer running BASIC.     Overview Orwell is a home made 6502 processor based machine. It […]