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@VitorVilela7 VitorVilela7 released this 13 Dec 00:40
· 60 commits to master since this release
v1.35
fb5ed1c

Summary

For game players, this release activates 22 sprites mode for most of the levels, unlocking the default sprite spawning limitations Nintendo imposed on the levels. That will make the game slight harder, but it will let enemies spawn enemies as maximum as the SA-1 Pack allows for!

For ROM hackers, this release adds DMA remap which frees channel 7 for custom HDMA and fixes a graphics uploading bug, adds a finish OAM hook, useful for custom sprites that uses a lot of OAM slots, fixes a bug involving bank switching and fixes an issue related to custom game over screens, in addition if the ROM is clean, it changes the sprite header to 0x08 on all compatible levels.

Full change log

  • Added the "finish OAM" hook, an extremely useful feature for programmers. See $40:0110-$40:0112 for more details on BW-RAM docs.
  • Added DMA remap which moves all game DMA logic to channel 2 and Windowing HDMA to channel 1, freeing up channel 7 for custom HDMA. In addition, DMA channel 0 is now reserved for transfers during game play (outside interrupts), fixing a rare bug on the LZ2/LZ3 decompressor when you decompress a GFX file while the game is running and just when the DMA executes, a NMI occurs and the DMA settings end up reseted. For the effectiveness of this solution, please change all patches to use DMA channel 2 instead of 0 or 1. This fixes issue #14 on GitHub.
  • Made all levels by default use Sprite Memory Header 0x08, allowing to all original levels have up to 22 sprites on screen. Note that I have included some logic to not take in account boss fight levels and levels that has wigglers (Forest of Illusion and Outrageous), since they are not compatible with.
  • Fixed bank switching getting incorrectly reset to original values after reapplying SA-1 Pack, which makes ROMs larger than 4 MB completely unplayable. This fixes issue #15 on GitHub
  • Fixed an issue where the Layer 3 tilemap would glitch if a custom game over screen was used. Caused by a remap error. Thanks MFG for figuring out and providing the fix. Merges pull request #18 on GitHub.
  • Fixed some inconsistencies on the programming guide.
  • Minor changes on readme file.
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