"The Wave". Written by David Proper

Code starts at $2000


SEI
LDA #$00
LDX #$00
LDY #$00
INC $d016
INY
CPY #$10
BNE $200A
INX
CPX #$08
BNE $2005
LDX #$00
LDY #$00
DEC $d016
INY
CPY #$10
BNE $201B
INX
CPY #$10
BNE $2016
CLI
LDA $D012
CMP #$FE
BNE $2026
INC $202A
LDA #$07
STA $D016
JMP $2000

This will creat a 'wave' that comes down over the text or a hi res picture.