Search found 1355 matches

by Jubatian
Wed Jun 19, 2019 10:21 pm
Forum: Games & Demos
Topic: Super Mario Land
Replies: 21
Views: 2757

Re: Super Mario Land

So, mode 52 has smaller rom tile sizes and ram tile sizes but the mode itself requires more flash? Yes. It is 2bpp (not 4bpp), just right for the GameBoy, which means ROM tiles and RAM usage is quarter of that of Mode 3. As you describe the problems, the latter seems also important as you can have ...
by Jubatian
Wed Jun 19, 2019 6:58 pm
Forum: Games & Demos
Topic: Super Mario Land
Replies: 21
Views: 2757

Re: Super Mario Land

I have around 600 tiles. Is that too many for mode 52? I didn't even consider that you were swapping tilesets. In that case Mode 52 is the clear winner. If you had only the typical one Mode 3 set, which is somewhere around 14K (224 ROM tiles), then the Mode 52 gain would be negligible (224 Mode 52 ...
by Jubatian
Tue Jun 18, 2019 7:05 pm
Forum: Games & Demos
Topic: Super Mario Land
Replies: 21
Views: 2757

Re: Super Mario Land

Huh, this looks neat! :) I was thinking about which video mode might be underneath, but it may not matter that much. The Gameboy would fit particularly well for Mode 52, however if you are primarily tile count constrained, it doesn't help. Here you certainly won't quite have any sprite drawing bottl...
by Jubatian
Sun Jun 09, 2019 9:43 am
Forum: Programming & Software
Topic: SPIF gets cleared if ANY interrupt happens?
Replies: 14
Views: 1919

Re: SPIF gets cleared if ANY interrupt happens?

SD_SendCommand(SDCARD_COMMAND_ACMD41_START_SD, (1 << 30)); No L suffix. headdesk I gotta work on remembering int constants are 16bits. Didn't the complier send a warning on this one? It seems quite trivial for it to notice. If you don't do it already, it could be a good idea to complile with all wa...
by Jubatian
Fri Jun 07, 2019 10:42 pm
Forum: Uzebox Derivatives & open source consoles
Topic: 32blit handheld
Replies: 3
Views: 628

Re: 32blit handheld

Yup, I thought it was kind of trying to do something alike the Pokitto at first glance. It is not that much different as far as I see from the concept, apart from that the MCU is much faster and has more resources. It is still in a middle ground though, resource-constraints preventing it becoming ju...
by Jubatian
Fri Jun 07, 2019 10:28 pm
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 201
Views: 42419

Re: The quest to a portable Uzebox - update!

Wow, these are nice! Sure will be quite some motivation to get new stuff released! :)
by Jubatian
Fri Jun 07, 2019 10:27 pm
Forum: Programming & Software
Topic: Mode 72 development
Replies: 81
Views: 17372

Re: Mode 72 development

I discovered a rather promising mod for this mode, quite simple actually, so at least it is not a ground-up something. I will see where I can get with it, but could be a whole new genre for the Uzebox, akin to what CunningFellow would do with his RLE mode! (No more for now, I hope I can come up with...
by Jubatian
Fri Jun 07, 2019 10:23 pm
Forum: Programming & Software
Topic: SPIF gets cleared if ANY interrupt happens?
Replies: 14
Views: 1919

Re: SPIF gets cleared if ANY interrupt happens?

What are you trying to accomplish by the way here? (Or is it some top secret stuff for a new awesome project? :) ) I am just curious as we have a couple of SD code already, that I created along with the new bootloader should do pretty well (or does it also have problems with these cards?). If you ne...
by Jubatian
Sat Jun 01, 2019 9:02 am
Forum: Programming & Software
Topic: SPIF gets cleared if ANY interrupt happens?
Replies: 14
Views: 1919

Re: SPIF gets cleared if ANY interrupt happens?

I think you should really try to reproduce it in the emulator. This is so that if the behaviour happens to appear within either of them (Uzem or CUzeBox), we could figure out what is going on causing it (something probably elsewhere in the code, probably not even within yours, and not an actual HW p...
by Jubatian
Fri May 31, 2019 4:58 pm
Forum: Programming & Software
Topic: SPIF gets cleared if ANY interrupt happens?
Replies: 14
Views: 1919

Re: SPIF gets cleared if ANY interrupt happens?

Could you check what happens in the Uzebox emulator when attempting to trigger the behaviour? It might pinpoint something. However I also think that the SPI is a bit "wonky" in this regard, code to work with it feeling somewhat fragile (I mean when I was in the situation).