no, I don't think that is a valid explanation. The modification indeed drives the display twice as fast and works for text.
Perhaps it is time to read the LCD driver chip datasheets again. Steve On Wed, Feb 21, 2024 at 6:57 PM Ken St. Cyr <k...@stcyrfamily.net> wrote: > Re Starblaze, someone left the following comment on the video: > > "I suspect the game display doesn't work because it's already driving the > LCD controller at close to its maximum bandwidth at 2.5MHz." > > Does anyone know if this is indeed the case? I would've thought other > things would've broken as well, but everything else I've tried runs > normally. Unless Starblaze is doing something to refresh the display more > quickly than other games/apps? > > //Ken S. > > > ------------------------------ > *From:* M100 <m100-boun...@lists.bitchin100.com> on behalf of > bir...@soigeneris.com <bir...@soigeneris.com> > *Sent:* Friday, February 16, 2024 6:23 PM > *To:* m...@bitchin100.com <m...@bitchin100.com> > *Subject:* Re: [M100] Clock Doubler Video > > > Even at the normal clock rates the TS-DOS timing issues can cause lock > ups. In normal use one might only stumble on this occasionally. I noticed > this testing Backpack drives when I’m doing a lot of the same operations > over and over again. > > It seems to stem around pressing the next button you want before it is > down drawing the screen. If I don’t get in a hurry and wait for a second > after each screen is drawn it never locks up. I suspect that the faster > clock exacerbates this latent bug. > > > > Jeff Birt > > > > *From:* M100 <m100-boun...@lists.bitchin100.com> *On Behalf Of *Stephen > Adolph > *Sent:* Friday, February 16, 2024 2:16 PM > *To:* m...@bitchin100.com > *Subject:* Re: [M100] Clock Doubler Video > > > > Ken , > > What a great job you've done! Thank you sir. > > You really did a nice job with the assembly and commentary on how to > install it. > > At some point I have to find out why Starblaze video is broken.... > > I'm adding the upgrade to all my machines to try and get as much > experience with it as possible. > > > > I have noticed that TSDOS sometimes does not work in 5MHz mode, whereas > Teeny does. So that has to be a software and timing issue to sort out. > > > > Thanks again Ken! Cheers Steve > > > >
