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On real hardware, this is generating a very rapid popping sound, somewhere around ~8Hz. Looks like you need to set the echo volume to 0, even with the echo flag disabled. Here's the final (I hope), minimal code: arch snes.smp str $F2=#$2C // DSP Echo Volume (Left) str $F3=#$00 // Volume 0 str $F2=#$...

Just as a side note it's good practice to jump back to the IPL (jmp !$ffc0 (yes, I seem to be one of the few here that prefers the "native" mnemonics ;) )) after executing a snippet like this, otherwise it's impossible to communicate with the SPC again until the SNES is reset. I'll keep that in min...

Thanks for all the help, I've managed to get all 10 FMV's playing now

https://www.youtube.com/watch?v=kJ7CT6bFPlw

Got it!

Do you know whether the S-SMP is executing the code you've uploaded? If the bsnes-plus trace logger is to be believed, yes. Does the code itself look correct? ..0100 mov a,$06c A:00 X:00 Y:00 SP:01ef YA:0000 nvpbhiZc ..0102 or a,#$20 A:00 X:00 Y:00 SP:01ef YA:0000 nvpbhiZc ..0104 and a,#$bf A:20 X:...

I made a few stupid mistakes, like getting my bitmask backwards, and never storing the value back to the register. Updated those, and added in disabling echo, but still no luck. Watching the memory viewer in bsnes-plus, I at least see that the data is successfully transferred to the location I speci...

I need to unmute the DSP in order to allow expansion audio to play. I understand that this requires uploading code to the SPC. Looking at this document , the process looks pretty straightforward. However, this is only my second time even touching SPC code, and the first time was so far into a caffei...

I'm not using HDMA. Good call on the line numbers, I probably want to blank 185-39 (I'm using a tilemap with fully black tiles in the letterboxed area, so there won't be any garbage if I blank late/enable early, it just cuts down on the bandwidth a bit). Anyway... it's working (the audio is a bit ou...

Since the video is letterboxed, I was able to force blank from scanline 184-40 which gave me enough time to upload the frame in 4 chunks. Now I just have a bunch of counter logic code to write and I'll have myself a video player.

Thanks, I'll take a look at that, but I'm still planning on writing my own, since I haven't worked with the PPU before, and I'll need to understand it in order to complete the hack (since the videos will interrupt the gameplay and I'll need to restore the video state afterward). Also, understanding ...

The source video is letterboxed to 256x144 (or maybe 160, I don't remember), so I'll look into the use of forced blanking. Not really sure how to do that though. This whole video thing is new for me.

Then, can anybody help me understand where these numbers are coming from? I need to transfer ~33K over the course of 4 frames (15fps@60Hz), or else I need to drastically reduce my frame size.

I'm in the US, I thought I'd read the number was supposed to be closer to 13K for NTSC, but if that's not correct, that would explain it. My full code is included in the zip attached to the first post (some of the commenting might be incorrect, I'm still figuring out some of these things, and others...

I edited the OP, and uploaded the ROM, which I just now tested again, only to find that the NMI breakpoint at $FF10 was hitting properly. I don't know if it's just a difference between my machines, or if something changed since I posted, or if I was just tired and delirious and thought I was hitting...

My ROM as it stands is not Chrono Trigger, it is my own code and some of the tutorial code from the super famicom wiki. I only copied a few tiny things I didn't understand like that BRK vector and the vector tables themselves. This is a from-scratch ROM to test out my own video loading code, which I...