;Binary to decimal conversion (0..999) ; ;Input: NumH:NumL ;Output Hund:Tens:Ones ; ;If Input > 999 Output will roll over, e.g. ;for input=5678 output=678. ; ; ;Size: 34 instructions ;Execution time (max) including return: ;22+5*9-1+5*6-1+4*3-1+2 = 108 cycles ; ;5-July-2000 by Nikolai Golovchenko bin2dec999 movf NumH, w addlw 241 addwf NumH, w movwf Hund ;b_2 = 2a_2 - 15 addwf Hund, w addwf Hund, w addlw 253 movwf Tens swapf NumL, w andlw 0x0F addwf Tens, f addwf Tens, f ;b_1 = 6a_2 + 2a_1 - 48 addwf NumH, w sublw 251 movwf Ones addwf Ones, f addwf Ones, f addwf Ones, f movf NumL, w andlw 0x0F addwf Ones, f ;b_0 = a_0 - 4(a_2 + a_1) - 20 movlw 10 bin2dec999a ;9 cycles max addwf Ones, f decf Tens, f skpc goto bin2dec999a bin2dec999b ;6 cycles max addwf Tens, f decf Hund, f skpc goto bin2dec999b bin2dec999c ;3 cycles max addwf Hund, f skpc goto bin2dec999c return
Comments:
movlw B'00110000' ; the extra MSB part makes the table work iorwf Hund, F iorwf Tens, F iorwf Ones, F
movlw 0x30 addwf Hund,f addwf Tens,f addwf Ones,f return
file: /Techref/microchip/math/radix/b2a-16b3a-ng.htm, 2KB, , updated: 2016/3/7 13:59, local time: 2023/12/4 15:25, |
©2023 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions? <A HREF="http://www.piclist.com/techref/microchip/math/radix/b2a-16b3a-ng.htm"> PIC Microcontoller, Radix Math Method, Binary to ASCII, 16 bit to 3digits </A> |
Did you find what you needed? |
PICList 2023 contributors:
o List host: MIT, Site host massmind.org, Top posters @none found - Page Editors: James Newton, David Cary, and YOU! * Roman Black of Black Robotics donates from sales of Linistep stepper controller kits. * Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters. * Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated! * Contributors: Richard Seriani, Sr. |
Welcome to www.piclist.com! |
.