6502 DEAD BEEF program for Kim UNO

pass 2

0000 DISP3  = 00F9

* = $0460

0460 LOOP
0460        JSR DSP         20 66 04
0463        JMP LOOP        4C 60 04

0466 DSP
0466        LDA #$DE        A9 DE
0468        STA *$FB        85 FB
046A        LDA #$AD        A9 AD
046C        STA *$FA        85 FA
046E        JSR SHOW        20 79 04

0471        LDA #$BE        A9 BE
0473        STA *$FB        85 FB
0475        LDA #$EF        A9 EF
0477        STA *$FA        85 FA

0479 SHOW
0479        LDX #$FF        A2 FF
047B DISP
047B        LDA #$00        A9 00
047D        JSR $1F1F       20 1F 1F
0480        STA *$F9        85 F9
0482        DEX             CA
0483        BNE DISP        D0 F6
0485        RTS             60
done.