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level1: Rename "coco1" DriveWire modules to "38400" Better reflects the fact that only the baud rate is different in these modules.
author Tormod Volden <debian.tormod@gmail.com>
date Sun, 26 Jul 2015 10:38:59 +0200
parents 1647f1874cdf
children
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* 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