nesdev.org

Who on this forum has experience programming for SA-1?

I wonder if it has something to do with cart headers? Do we know if the SA-1 checks them?
EDIT: it's not

APU is in an endless loop at 0284h? Main CPU is also in an endless-loop at 7F:0060 for audio streaming with several NOPs? And IRQs/NMIs are both disabled... hmmm. And SA-1 is somewhere at 01:8C7B. Yep, this sounds correct. And, btw. when also enabling the illegal opcode warning... at 00:8036 is tha...

So I rewrote my code to have a few checks at the start, and to display the results to the screen. I just tested it on hardware, and all of them failed. All I got was a black screen, which I thought was impossible - and then I realized: right after starting the SA-1 I wait on interrupt for it to get ...

Thanks for your help! 2210h written by main cpu, that's not possible as far I know. Not sure where you got that, I write to TMC using the SA1. 2261h written by main cpu, that's probably from the Jumpin Derby code? The register is undocumented and no other games use it. Yeah, that'll be the config se...

Oh yeah: on SD2SNES it shows only black screen when I tested it.

I have an SA1 cart a made a while ago which is game I have removed the ROM from and replaced with an IC socket. It takes over 10 minutes (I haven't timed it) to flash and test a 4MB ROM, which is why I didn't do it sooner. (they take another 10-15 minutes under UV to erase.) I haven't tested the ori...

Yeah, one of the first things I did was make the main cpu run from WRAM, so the SA1 wasn't constantly tripping up over it, but that wasn't the issue.
I might try getting the SA1 to run from IRAM as well, as that might be faster than reading from rom...

Hi, I've been writing a SNES demo to be released at Revision 2019, which happens next weekend. Development has been going well so far, but a few days ago I decided to put it in an SA-1 cart and test it on hardware. For some bizzare reason, despite working perfectly in BSNES, it does not work on hard...

I can move this into a different thread if you want

Ah, I don't believe I released this one. Sorry. The colours on the right are supposed to be like that, because they're corrupted by the ones on the left. I haven't worked out how to not make that happen, but It's probably more to do with just my bad palette organisation than anything. I've attached ...

From your description, I'm starting to think you might have attached the wrong file, but I'm not sure? Ah, you're right, I did! Sorry for wasting your time. :oops: The test I accidentally attached is actually one to test what happens to sprites as you force blank during h-blank. It should not load ...

Here's a fun one: This demo has two different modes beside each other on the same screen. Currently no emulator gets it perfect, the most common issue being that the right mode flickers. In Mesen-S, the mode on the right does indeed bounce about (It's stationary on hardware) but the more interesting...

I'd like to say that I use LibSFX (which is ca65) for my projects, and I find it better to use than I found WLA-DX when starting out, as it has various macros to help with memory organization, and rep/sep commands, and even dpo() to help with moving the direct page around. It also comes with an imag...

Some people mentioned that they were disappointed that Ferris didn't go into detail about the assembly code of the demo during the breakdown. If you want, you can watch him try to copy an effect by Revenant over hours long streams, in asm: https://youtu.be/SAHR_gClnAY https://youtu.be/qjWninC-Do4 ht...