; somewhat inspired by http://www.6502.org/tutorials/decimal_mode.html start: sed sec lda #0x46 sbc #0x12 sta 0x10 php plx stx 0x11 sed sec lda #0x40 sbc #0x13 sta 0x20 php plx stx 0x21 sed clc lda #0x32 sbc #0x02 sta 0x30 php plx stx 0x31 stp