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It's been a while since I shared last SimCity SA-1 update because I was thinking some very complex things with SA-1 Character Conversion DMA and with the terrain generator, but I did it. I got animations to work and 10,000 maps support on the game. #1,000-#1,999 are the alternate maps from original

The game used to generate the terrain, then another routine converted to a bitmap using SNES format. Now, while the game generates the terrain, it stores its pixel to the bitmap buffer, which at every frame SA-1 Character Conversion DMA converts instantly to SNES GFX format, becoming an animation.

The game converts the map numbers into a seed which is fed to the map generation. There was a bug that allowed to you have up to 2,000 maps due to an uninitialized value when entering the main generation menu without touching anything. Now they are #1,000-#1,999 maps.

And finally, #2,000-#9,999 are additional maps done by re-feeding seed in another way, so you can have much more maps on the game with a cheap change. When you click on the map, there's a full screen view (made with Mode 7) and the animations work as well.