+retroclouds Posted Monday at 08:02 PM Share Posted Monday at 08:02 PM (edited) Here's a thing I've been playing with, and thought about putting it in a separate thread. With the help of @Asmusr I tweaked the f18a emulation in my local clone of js99er, so that it can now run in 60 rows, 80 columns mode. The idea was to see how I need to setup VDP memory to get stevie running in 60 rows, 80 columns mode and do refactoring for the different video modes (24x80, 30x80, 60x80, ...) This is still a work-in-progress and will never be officially released, but it does prove that it's doable. As a starting point I took the stevie build I made for classic99 where I use a character cursor instead of a sprite cursor. (Sprite cursor is possible, but will only get halfway the screen, due to 1-byte for Y in the sprite attribute table, so of no real use here) Anyway, the build for classic99 was also a hack, because I refresh the frame buffer each time the cursor blinks. That clearly shows here, because I'm dumping quite a bit of data to the VDP and it gets a bit slow. So, next thing to do for me is to get that cursor routine a bit smarter. You never know, maybe the f18a mk2 will support a 60x80 mode. I'm still wondering if it'd be doable on the f18a mk1 with a firmware update, but I think Matthew said it won't work because of VHDL already being chuck-full. 16K of VDP memory is enough though, as my demo shows. Enjoy the demo (VDP corruption at the end when turning on the ruler., but that's part of the fun. I still need to fix some things in stevie). js99er-20230123204409.webm Edited Monday at 08:03 PM by retroclouds 7 Quote Link to comment Share on other sites More sharing options...
+TheBF Posted Monday at 09:57 PM Share Posted Monday at 09:57 PM Now you are showing off. Very nice. 1 Quote Link to comment Share on other sites More sharing options...
HOME AUTOMATION Posted Tuesday at 12:08 AM Share Posted Tuesday at 12:08 AM Can it core a apple?🍎 1 Quote Link to comment Share on other sites More sharing options...
+TheBF Posted Tuesday at 01:03 AM Share Posted Tuesday at 01:03 AM You wanna go to da moon? Quote Link to comment Share on other sites More sharing options...
+retroclouds Posted Tuesday at 05:39 AM Author Share Posted Tuesday at 05:39 AM 7 hours ago, TheBF said: Now you are showing off. Very nice. Thanks, I’m kinda hoping we’ll get such mode in real hardware, perhaps in the mk2 😀 1 Quote Link to comment Share on other sites More sharing options...
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