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PIC Microcontoller Radix Math Method


4bit to BCD 2 digits

from Bob Ammerman

WARNING: Untested code

Input:

W is a binary number in the range 0..29

Output:

W is a BCD number in the range 0x00..0x29

; W is 0..29

    addlw    .256-.20        ; C will be set if number was >= 20
    skpnc
    addlw    .6                   ; ...adjust for 20..29
    addlw    -(.256-.20)    ; Back to original value

    addlw    .256-.10       ; C will be set if number was >= 10
    skpnc
    addlw    .6                  ; ...adjust for 10..29
    addlw    -(.256-.10)   ; Back to original value

See also:

file: /Techref/microchip/math/radix/b2b-4b2d-ba.htm, 1KB, , updated: 2007/8/15 22:31, local time: 2012/2/9 23:36, owner: JMN-EFP-786,
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