Maybe Bill was in a hurry. On Wed, 23 Feb 2022 at 11:53, John R. Hogerhuis <jho...@pobox.com> wrote:
> 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 >> >
