id: BL-063
title: During play: the colour/black-and-white switch moved to black and white
shows: As BL-060 but the colour/black-and-white switch moved to black and white on frame 450 and left there.
inputs: BL-063.inputs
frames: 800
rom_sha1: 0940fea7f04cdb6d4b90c5ad1a7e344e68f6dbb1
trace_sha256: 6b273e2f73de3e35d2c87925a10ef5b8a8fe0fc5620c03947bfc42e66cbf670f
trace_bytes: 240716
observations:
  Frames are counted from power-on (frame 0). Memory bytes are named by their address; the meanings are working labels
  (Stages C6 and C7, docs\CONTROLS.md and docs\CAPTURES.md), not yet confirmed (Phase F). Every number below was read from the trace.
  - As BL-060 (Game Reset on frame 240, LEFT on frames 370-419) and, from frame 450 to the end, the colour/black-and-white switch moved to black and white (input bit 512).
  - Compared with BL-060 frame by frame: the first difference is on frame 450 (the switch register changes on frame 450); at that frame the memory bytes that differ are $ef: ff in BL-060, 0f here; the picture is the same.
  - Over the whole entry the memory bytes that ever differ from BL-060 are: $ef, $f2, $f3, $f5.
  - First frame at which a ghost place differs from BL-060: none; Pac-Man place: none; the lives counter on frame 799 is 2 (BL-060: 2).
  - How to check it against the real game: start a game, walk left, then move that switch on the console while the game runs.
