Search found 50 matches

by Molive
Wed Oct 23, 2019 12:09 pm
Forum: SNESdev
Topic: Is DMA faster than HDMA? (accessing CGRAM)
Replies: 3
Views: 3520

Re: Is DMA faster than HDMA? (accessing CGRAM)

Am I the person that mentioned that? Ah no, sorry if it wasn't clear, it was someone not in this forum. (rest of post) Thanks for your help, I'll keep that in mind. The intended use case is not for a game as such, so I can probably use most of the frame setting up DMA to start exactly as hblank doe...
by Molive
Mon Oct 21, 2019 3:02 pm
Forum: SNESdev
Topic: Is DMA faster than HDMA? (accessing CGRAM)
Replies: 3
Views: 3520

Is DMA faster than HDMA? (accessing CGRAM)

So I'm trying to write to CGRAM during hblank, and the current method is that I use all 8 HDMA channels to transfer a total of 8 colours (mode 3, first two bytes are address second two are colour data). Someone mentioned that I might be able to transfer more by using regular DMA that is timed correc...
by Molive
Mon Oct 21, 2019 2:52 pm
Forum: SNESdev
Topic: Looking to make an SA1 Dev board
Replies: 9
Views: 9486

Re: Looking to make an SA1 Dev board (27c322 not writing)

Did you use a UV light to erase it? Haha, this is an old thread. So I was trying to erase them by using the windowsill, and later a uv lightbox, of which neither worked. I eventually bought a specific small lightbox with a specific waveband (I'm not sure exactly what's different) and most if not al...
by Molive
Mon Oct 21, 2019 2:47 pm
Forum: SNESdev
Topic: How do emulators emulate CPU and SPC700 communication?
Replies: 4
Views: 4874

Re: How do emulators emulate CPU and SPC700 communication?

https://byuu.net/design/cooperative-threading has a bit about how things are synced in things like Higan
by Molive
Sun Aug 11, 2019 3:13 pm
Forum: SNESdev
Topic: How do I implement songs made in SNES GSS with SFX?
Replies: 2
Views: 9494

Re: How do I implement songs made in SNES GSS with SFX?

Without much knowledge of assembly it might be quite hard. If you output the song as SPC there are tools to turn that in full roms, but then ofc you won't have the sound effects...
by Molive
Sun Aug 11, 2019 3:12 pm
Forum: SNESdev
Topic: How do I implement songs made in SNES GSS with SFX?
Replies: 2
Views: 9494

Re: How do I implement songs made in SNES GSS with SFX?

I believe SNES GSS comes with some code to make things run? It might be in C rather than assembly Look around in the files for those. There should be code to upload a driver, then some to upload a song and start it, and then some to play sound effects. Run the first two at the start of the code, and...
by Molive
Wed Apr 24, 2019 6:49 am
Forum: SNESdev
Topic: 4 SNES demos at Revision 2019
Replies: 8
Views: 6465

Re: 4 SNES demos at Revision 2019

dougeff wrote:The links of your stuff lead to a blank page with no images. Do you have a link to a picture or video?
ah, I think I may have misread this. sorry.

SNES-NICCC-FX
Reading In Between The Lines
The short SNES one
Hello
by Molive
Wed Apr 24, 2019 6:32 am
Forum: SNESdev
Topic: 4 SNES demos at Revision 2019
Replies: 8
Views: 6465

Re: 4 SNES demos at Revision 2019

dougeff wrote:The links of your stuff lead to a blank page with no images. Do you have a link to a picture or video?
Are you sure?
On each link there's a download link too. Under "downloads"?

EDIT: I'll add extra download links. Added.
by Molive
Wed Apr 24, 2019 6:14 am
Forum: SNESdev
Topic: 4 SNES demos at Revision 2019
Replies: 8
Views: 6465

4 SNES demos at Revision 2019

Hello! I recently went to the Revision 2019 demoparty, where lots of demos were released. Of all the demos, there ended up being 4 SNES demos, which I'm making a joint topic to discuss them all on. They are: [dl] SNES-NICCC-FX , by me. It uses the Super-FX chip to do speedy transfers of 3d data of a...
by Molive
Mon Apr 15, 2019 6:13 am
Forum: SNESdev
Topic: Help with SA-1 demo
Replies: 28
Views: 14569

Re: Help with SA-1 demo

Read it again CPU side with lda $bf230e. Unsurprisingly, it's now BFh. Can the version code even be read? In other news, it now works. I switched to using fixed-mode, which solved most of it, but then I made all the VBP sections word aligned (like nocash suggested) and that fixed the rest. I thank ...
by Molive
Mon Apr 15, 2019 1:30 am
Forum: SNESdev
Topic: Help with SA-1 demo
Replies: 28
Views: 14569

Re: Help with SA-1 demo

Did you get the variable-bit-length reads working? And are you still UV-erasing after each test? No, Yes. I have a few chips and I can erase 5 at a time, but it takes like 30mins to erase and 10 to flash. I'm doing some more VBP testing, and it seems something along the lines of "Writing to VDA cle...
by Molive
Sun Apr 14, 2019 12:37 pm
Forum: SNESdev
Topic: Help with SA-1 demo
Replies: 28
Views: 14569

Re: Help with SA-1 demo

Apparently my SA-1's version code is 23h.
by Molive
Sun Apr 14, 2019 5:15 am
Forum: SNESdev
Topic: Help with SA-1 demo
Replies: 28
Views: 14569

Re: Help with SA-1 demo

So, in short: it now works. kinda. In long: The issue was in the SA-1 boot. When booting, I leave emulation mode, jump to the correct bank, set up dpage and stack and then jump to a subroutine to set up the rest of the registers. This seems fine at first, until you include register 222Ah - IRAM writ...
by Molive
Sat Apr 13, 2019 2:29 pm
Forum: SNESdev
Topic: Help with SA-1 demo
Replies: 28
Views: 14569

Re: Help with SA-1 demo

So I've done another test where the SA-1 sends an interrupt as soon as it is turned on, and in software this interrupt fires but on hardware there is no such interrupt. This confirms that the SA-1 is not even starting, which means it's nothing to do with IRQs or DMA or bus conflicts or anything like...