Data Bank (B) register woes (attn: koitsu, byuu)

So whenever I attempt to change B, the Data Bank register, to a different value using code like this (assume A = 8 bit):


... then B apparently isn't updated to $XX immediately, unlike with Direct Page register changes. The tracelog tells me that several, even dozens of absolute (i.e., 16-bit operand) instructions that use the old data bank may pass before it switches to the new one.

Is this normal? Or what am I doing wrong?

Thanks for any advice!

plb definitely should be updating DB immediately. What are you using to generate the tracelog?

... I'm a dumb**s.

Right after posting this, I realized that I was staring at DP (Direct Page) instructions instead of absolute ones like I thought I used in my code ... and DP is always in bank $00, right? So yeah, my mistake. Don't bother with it.

I've been using DP as an index register when I've ran out, so this is very good to know, because if anything I'm trying to point to isn't in bank $00 (which I don't think my object table with as many entries as I want will fit in the ram there) then I'm going to have a problem.