Asmusr

Can it generate HDMI output without the need for a license? 🙂

We purchased one of these at work a few weeks ago for signing a Windows app. It's working fine, but the procedure for downloading was a bit cumbersome (needed a specific version of Firefox): https://comodosslstore.com/codesigning.aspx

Perhaps 16 patterns with 4x4 pixels blocks, like multicolor mode?

It's 9918A. And I'm glad it was necessary to ask. 🙂

With a faster CPU the bottleneck for games would soon become the CPU to VDP transfer bandwidth (for assembly games, that is). It's not possible to push much more through than we do now. With multiple CPUs only one at a time would be able to access the VDP.

"Platform 3" is the working tile for my latest game project (I already had a "Platform 1" and a "Platform 2" folder). I posted the graphics here a month ago, but since then I have worked on making it interactive. The plan is to make a game that has more puzzles than action. I would like to implement a reasonably accurate physics engine where movement is controlled by forces (i.e. acceleration). For instance, gravity will always be present, but downwards movement is blocked by floors. It has taken a while to get it to work, but for now it seems pretty robust. The viewport of the map is uploaded to the VDP every frame (no matter if it's scrolling or not), so changes to the map in CPU RAM are reflected immediately. That makes it possible to make the moving platforms from characters rather than sprites. I also plan to make some enemies from characters in order to stay under the 4 sprite per line limit. The frame rate is currently 60 FPS, but this will soon drop to 30 FPS as more features are added. That's not a bad thing since the scrolling and the platforms are a bit too fast now.

Did you set up SAMS register 3 (at >4006, controlling the >3000 region) to map another page than page 3 into that region? Otherwise, when you turn on the SAMS mapper, you are accessing the same RAM as without the mapper turned on. Edit: it looks like you are correctly setting the register to >0100, mapping page 1 into the >3000 region. Edit2: Do you use SBO 0 before setting up the register and SBZ 0 after setting it up?

@GDMike Do you have any remaining issues/questions regarding SAMS?

Mine has arrived already 🙂. It's amazing how small it is.

Thank you.

Blue and green actually work a lot better. But I will stop since this is the wrong thread.

Not me, and I'm not really happy with my own proposal either. Maybe blue would work better?

Maybe they could have used a color scheme like this?

@OLD CS1can you change the title of this thread?

Espial is not an arcade game i remember from BITD, but from my first glance at this video I think they could have done much better with the 9918A graphics. Using the 3 red or green shades, for instance, instead of making everything one color.

You could wait for 120 VDP interrupts.

With SAMS widely available, I think it might be time for a programming competition where we look at the best use for abundant RAM on the TI-99/4A. I imagine participants would submit a size limited program, e.g. max 8K, but would be allowed to expand into all the SAMS available. Does that sound interesting to anyone?

Thanks Greg, I have made my order.

It's a strange world where stuff from China is shipped for free and usually without any custom duties, while goods from the US are expensive to ship and heavily taxed.

I think having to install Cygwin in order to run an installer defeats the purpose. A plain zip file with everything included would be useful, but that would have to be maintained for each update, which is probably not something you want. 🙂

That's very reasonable, but if shipping within the EU could be arranged I would rather use that, since custom duties from the US adds another $30 (at least).

I don't have the "first class mail" option. There's U.S.P.S. Priority Mail International but that's still $41.45.

Thanks. The would be great. 😊

Shipping to Denmark costs $55. Are there no other options?

A drop in replacement would be 100% compatible only faster. That's what we're looking for in this thread, right? I agree it wouldn't make sense to replace the CPU with an incompatible one.