1 ;-----------------------------------------------------------
2 ; Y2K FIX by Alan Davis, Dennis Debro, and Ronen Habot
3 ;-----------------------------------------------------------
4 Y2K LDY #$00 ; Copy BIOS opening screen to RAM
7 LDA #$58 ; Assume 2 port system
9 CPX #$E8 ; Is this a 4 port?
10 BNE Y2K0 ; Jump if not
11 LDA #$42 ; Yes, 4 port system
23 LDA #$D4 ; Point to copyright string
27 LDX #$0B ; Store NOP's @ end
32 LDA #$60 ; Store RTS opcode @ end
34 JSR $0600 ; Show title screen
35 LDY #$00 ; Clear RAM from $0600-$3FFF