Press and hold down OPT1 and UP before the title screen appears get into "freak out" mode. Or once at the "Continue?" screen, after the first "beep" of the countdown, and while the timer still shows a 9, press UP and OPTION 1 at the same time, and hold them. You'll see the GAME OVER screen, but keep holding them. The TOKI demo will appear... keep holding UP and on OPTION 1. After the names of the designers fall down, the demo should go psychedelic!! The demo will cycle through colours, a catchy tune will begin, and the pad will allow you to sample digitized TOKI sounds... furthermore, pressing DOWN and LEFT repeatedly will cause the samples to descend in pitch. Conversely, pressing UP and RIGHT repeatedly will cause the samples to ascend in pitch. Note: Once the new demo begins, release UP & OPTION 1. Then use pad to sample sounds. Pressing A or B starts the game normally (from Star*Lynx BBS and Jason).
The digitized designers:
For those of you trying to get the digitized picture of the TOKI designers to appear in TOKI but are having trouble, I've found that holding the pad UP and holding OPTION 1 simultaneously JUST as the screen fades to black to show the "Continue" screen usually produces the white dot after the timer expires (of course hold UP and OPTION 1 through the whole duration of the continue screen). [Ed. This is incomplete. I know that something else has to be done first in order for this trick to work. Can someone email me what it is?].