Mercurial > hg > Members > kono > nitros9-code

view lib/kreiderclib/ccdiv.as @ 3226:9749d0dfc4a2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Changed a puls PC to rts to save cycles
author David Ladd <drencor-xeen@users.sourceforge.net>
date Sat, 20 Jan 2018 19:32:22 -0600
parents 1647f1874cdf
children
line wrap: on
line source

* Disassembly by Os9disasm of ccdiv.r

 section code

ccudiv: subd  #0 
 beq   L000f 
 pshs  d 
 leas  -2,s 
 clr   ,s 
 clr   1,s 
 bra   L003d 
L000f puls  d 
 std   ,s 
 ldd   #$002d 
 lbra  _rpterr 
ccdiv: subd  #0 
 beq   L000f 
 pshs  d 
 leas  -2,s 
 clr   ,s 
 clr   1,s 
 tsta   
 bpl   L0031 
 nega   
 negb   
 sbca  #0 
 com   1,s 
 std   2,s 
L0031 ldd   6,s 
 bpl   L003d 
 nega   
 negb   
 sbca  #0 
 com   1,s 
 std   6,s 
L003d lda   #1 
L003f inca   
 asl   3,s 
 rol   2,s 
 bpl   L003f 
 sta   ,s 
 ldd   6,s 
 clr   6,s 
 clr   7,s 
L004e subd  2,s 
 bcc   L0058 
 addd  2,s 
 andcc #254 
 bra   L005a 
L0058 orcc  #1 
L005a rol   7,s 
 rol   6,s 
 lsr   2,s 
 ror   3,s 
 dec   ,s 
 bne   L004e 
 std   2,s 
 tst   1,s 
 beq   L0074 
 ldd   6,s 
 nega   
 negb   
 sbca  #0 
 std   6,s 
L0074 ldx   4,s 
 ldd   6,s 
 std   4,s 
 stx   6,s 
 ldx   2,s 
 ldd   4,s 
 leas  6,s 
 rts    

 endsect