tramzee/dcpu16-forth — pull request #2 by dcorboy (2012-05-11 04:32:31+00:00)
Title: Scrollable viewport

Scrolling screen viewport works great! Use '{' and '}' for now or set the constants to something else.

Sorry for all the commits -- the last one was intentional. After moving viewport handing to _key and _echo, I saw one weird error in my testing that I was never able to repro. I suspect someone may be relying on a register that I had to use. (It was marked as 'munged' but wasn't actually, until I munged it.)