Very cool. The slow scroll is one of the noticeable issues of the M100/T102.
Missed opportunity for Bill G. Similar to not implementing the higher baud rates and hardware flow control for the UART. But it's all about cost versus benefit, time to market. "Premature optimization is the root of all evil" - Donald Knuth And the three rules of optimization (the way I heard it): Rule #1: Don't. Rule #2: No, really. Don't. Rule #3, only for experts: Not yet! The rules aside, I think it's time :-) -- John. On Tue, Feb 22, 2022 at 9:45 PM Stephen Adolph <twospru...@gmail.com> wrote: > Well, I started this little activity in 2006. > > I have a pretty good working "hardware scroll patch" now running in > virtual T! > > Recall- > * the M100 LCD drivers have a hardware scroll mode > * M100 does not take advantage of it to speed things up. > * I previously made a patch to the M100 rom that frees up 150 bytes. > * I've used most of that free space now to implement a patch that uses > hardware scroll. > > The only condition that this patch corrects is the condition when an > entire 8 lines of screen is being scrolled either up or down. > > Other speed ups are imaginable but are much more complex to implement. > > I have one last bug that I know of to fix, and when I get that done I will > share it so others can give it a try! > > Steve >
