SpritesMind.Net

My code doesn't use DMA; I don't know how to use it yet. :)

If you look at my code, the tiles in fact are copied excrutiatingly slowly to the VDP because I have to manually swizzle each byte on the 68000 as I retrieve it from the ROM (I'm using the exporter from the Usenti bitmap editor, it's for ...

I'm still getting a garbled display on my own PAL Mega Drive 1 when loading the instmaker from my custom EEPROM-based PCB. I'm fairly sure it's not a problem with my hardware as UWOL The Quest for Money runs flawlessly from it, as does Gigasoft MD Music Demo 1 .

I'm getting a screen of garbage ...

Thanks, I'll take a look. I don't have a MED so I probably won't implement it though.

Where would be the best place to read about that interface?

This version has the background and won't crash in Regen.

http://www.mrdictionary.net/stuff/2014/ ... tmaker.zip

Wow, that background looks amazing! I'll get to work in integrating it right away.

Thank you very much for the test in hardware as well! I noticed that I'd done something that made Regen unhappy, but it worked in Fusion. A Regen crash usually means I've not balanced the stack correctly or somehow ...

I had no idea. It's good to know that I'm in the presence of an expert. :)

I only briefly looked at the available FM related tools when I started porting my Master System Z80 player (anybody play Gravity Beam Master Gaiden ? :P) to the Mega Drive a few days ago. I wanted the smallest, easy to use ...

Yep, I figured it out, but thanks for taking a look at it anyway. I hope it's useful to anybody who quickly needs to be able to test basic static FM voice patches on the real-deal system. I use a free VST called VOPM to do this in Windows (and a free program called vsthost to run the VST like a ...

Okie dokie, so the DT1 MUL...SSG-EG value block has the operators 2 and 3 switched round. I was working from this when I wrote the original program, which doesn't say that.

Here's the fixed version if anybody is curious and wants to quickly poke some FM values.

Hi, I'm writing a music player for the Mega Drive, but I'm having some unusual problems that I don't understand.

I've written a simple FM patch editor which exposes all the values for the operator lines so I can make new instruments and see what they sound like. ( zip ) A and B increase or decrease ...