Hey Igor! I was using the TL opcode to load the page and program counter, but BX301 page 55 didn't start at the same byte as right after ACL. I just changed the code to do a TL and then a T 0, and that seems to have fixed it. I also tweaked the timing a little and now I'm getting 64 unique pages: www.seanriddle.com/bx301.bin