Gameboy Development Forum

After re-reading some documents, I've just now begun to understand some graphics corruption in my game.

Since I have 32x32 sprites with animations, I've run out of tile space. I have been loading sprite frames and other bg tiles dynamically, but I now see that writing these tiles causes occasional pixel corruption. Until this point I was not trying to work around the mode 3 vram access restriction. Now that I better understand it, I'm wondering if there is a way to work with the issue w/o re-writing or scrapping my current game.

Does anyone have reference to some dynamic tile loading code that they could share?

For instance, when loading single tile data for a dialog sequence, I've inserted some code to wait for mode 3 to complete. It's helped dramatically reduce the corruption, but not completely:
https://imgur.com/a/uWV8U4X

This text is rendered by writing a single font tile at a time to the bg - where those characters are mapped to the dialog area of the window.

    PUSH_BANK(2);
    while((STAT_REG & 0x2) != 0);
    set_bkg_data(currentTile, 1, &(ascii.data->data[((*currentChar)-32)*16]));
    POP_BANK;

So even tho I'm waiting on mode3, apparently during the write, mode3 is blocking vram again.
Any suggestions, pseudo code or references about solving this would be helpful.