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Varvara / Uxn core 0.0.1 for Analogue Pocket is released!
It’s still early, and a lot of features aren’t there yet, but it should be good enough for some simple demos and games 🙂
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Open on mastodon.social tsalvoOctober - Chiptune Maker for iOS:
Varvara / Uxn for Analogue Pocket:
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iOS developer, musician, retro gamer
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More progress on Uxn for Analogue Pocket 🙂 Still working on these changes to clean up the double buffering, which should help stabilize the video, and remove the need to toggle the Frame Blending setting on a per-ROM basis. Still needs a tiny bit of work These videos look similar to recent posts, but now it looks more stable even with Frame Blending disabled (less flickering). And no more blended frames with the previous screen (e.g. remnants of a title screen during gameplay). Another example: The amiga.rom is also looking great now with these changes! Before, the grid was shimmery without Frame Blending enabled, and the ball would leave a trail of pixels behind it with Double Buffering enabled. But every once in a while, with these new changes, I see some corruption at the top of the screen. So even though it’s a good improvement, I may still have some timing issues to sort out Some more progress on sprites! The 2bpp mode is working much better now, but I still have lots of weird drawing bugs. It’s getting there slowly though 😀 A little more progress on the Uxn core for Analogue Pocket! Some of the test ROMs are looking a little closer to how they are supposed to 😀 I started to fix some issues with how I was implementing the multiple sprite drawing, but I think I still have some more work to do with blending. Sorry for the lack of updates lately - progress has been slow because I was really sick for a while. Feeling much better now!  @tsalvo looks like you got 1bpp nearly down :) Glad to hear you're feeling better! A few more ROMs are working on the Analogue Pocket Uxn core, and input is hooked up now! I have so much more to do, so a lot of things still don’t work, but a little more progress is always exciting to see! 😀 Next, I’ll try to implement the auto-advancing sprite drawing (where a single instruction could draw as many as 16 sprites). Loading Uxn ROMs from the SD card! There are still bugs to work out with a couple ROMs that were working before, but it’s getting there! Just fixed a CPU bug where something was just slightly off by one. That was a tough one to find, but more test ROMs are working now. I started out with an 18MHz clock speed on the Pocket, which ought to be more than enough for everyone right? 😅 I’m gonna try to see if I can increase that speed. Maybe I can also get some more instructions to complete in fewer cycles. Then finally, I’ll go back to working on sprites! @tsalvo Oooh! You've got the chibicc example going :D What was the CPU bug btw, I'm curious if maybe I can't add a note about it in the docs? After increasing the clock speed, and a couple other minor improvements, it’s a little smoother now! A little more progress on the Uxn core for Analogue Pocket! Screen vectors are working, at least partially. This means that “game logic” code, which needs to execute once per frame, is handled correctly. This is assuming we are starting on a new frame where the CPU isn’t already busy. Otherwise, it will wait another frame to try again. “What’s your vector, Victor?” 😀 More progress on Uxn / Varvara FPGA core for Analogue Pocket 😃 even though it doesn’t look like it. Still trying to get the fill modes for drawing to work, and seeing some interesting results, but I think I’m close! Once this is working, the fill modes will allow drawing rectangles from a point to one of the 4 corners. Then sprite drawing is next! Much closer now! I think the flickering is because it’s looping back to the beginning and trying to draw everything again @tsalvo Oh wow, things are moving along! If you'd like a simpler test file, where things are more isolated, let me know and I'll make you one :) edit: Just saw your latest video where you've made your own test file, you've got this ✊ |
