title: "BcdSub" description: TRSE built-in method (from IDE help)

`BcdSub`

Systems: MOS6502
Parameters: a, a, n

BcdSub( [address 1], [address 2], [number] );

[address 1] - The address of the BCD number
[address 2] - The address of the BCD number to subtract
[number] - The length of the BCD in bytes

Description

Subtracts the second BCD number from the first.

Example


var
    score: array[] of byte = ($12,$34,$56); // number is 563412
    scoresub: array[] of byte = ($01,$00,$00);

begin
    BcdSub( score, scoresub, 3 );
    // result = 563411