## Binary to BCD half-packed 8 bit to 3 digit

From: Scott Dattalo, notes

Translated and optimized for the Scenix SX by Nikolai Golovchenko

```;********************************
;binary_to_bcd - 8-bits
;
;Input
;  bin  - 8-bit binary number
;       A1*16+A0
;Outputs
; hundreds - the hundreds digit of the BCD conversion
; tens_and_ones - the tens and ones digits of the BCD conversion
binary_to_bcd:

clr     hundreds
mov     W, <>bin                ;w  = A0*16+A1
add     W, bin                  ;w  = A0+A1
and     W, #00001111b           ;w  = A0+A1 % 16

mov     tens_and_ones, W        ;tens_and_ones = A0+A1 % 16
mov     W, #\$16
snb     DC                      ;if A0+A1 > 16
add     tens_and_ones, W        ;  tens_and_ones  += 16
mov     W, #\$06
snb     DC                      ;if tens_and_ones % 16 > 10
add     tens_and_ones, W        ;  tens_and_ones  += 6

add     tens_and_ones, W        ;tens_and_ones  += 6
sb      DC                      ;if tens_and_ones < 10
sub     tens_and_ones, W        ;  tens_and_ones  -= 6

mov     W, #\$16 - 1 + \$6
snb     bin.4
mov     W, #-\$06
sb      DC
mov     W, #\$30
snb     bin.5

mov     W, #\$20
snb     bin.7

mov     W, #\$60
snb     bin.6

rl      hundreds
sb      hundreds.0
sub     tens_and_ones, W

snb     bin.7
inc     hundreds

```

 file: /Techref/scenix/lib/math/radix/b2bhp-8b3d_sx.htm, 2KB, , updated: 2004/6/10 14:40, local time: 2022/6/28 12:34, TOP NEW HELP FIND:  18.232.59.38:LOG IN

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