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--- how_to_mix_c_and_asm [2008/09/10 17:31]
audiocommander code plugin disappearance is killing me :/
+++ how_to_mix_c_and_asm [2008/09/29 12:27]
wackazong
@@ Line 1: / Line 1: @@
-It's actually quite easy!
-As you can see in the example below, just enclose the ASM part with //_////_asm// and //_////_endasm;//
-You might have to declare some additional variables, but the concept is quite straightforward.
-<code c>
-unsigned char Scale_7bit(unsigned char evnt2, unsigned char min, unsigned char max) {
-  // scaled value is (<8-bit random> * ) >> 8
-  PRODL = evnt2 << 1; // 8bit value
-  PRODH = max-min+1;  // range
-__asm
-    movf _PRODL, W
-    mulwf _PRODH, 0
-__endasm;
-  return min + PRODH;
-}
-</code>
-Also, as well as the above example of 'inline ASM', it is possible to include ASM code in .inc include files, and call that ASM code from within your C application. Please see the forum thread [[http://www.midibox.org/forum/index.php?topic=7698.0|using assembler in C - question about _ in front of macro names]] for more info.

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