increment code to display in 2 7segments

[coejayson]

phelp naman po to derive a code to increment the value of the accumulator/register and to display in the 2 7segments...as in the queuing machine with 00 - 99...tnx

[sbtech]

do you write in ASM?

[coejayson]

yep po

[motion55]

If you use packed BCD, then the lower nibble can be used to display the ones digit and upper nibble for the 10's digit.

To perform BCD increment, you add 1 to the accumulator and then execute DA (decimal adjust) instruction.

Code: [Select]

    MOV A,R1
    ADD A,#1
    DA  A
    MOV R1,A