make arduino tvout initial release work into atmega32 about arduino-tvout HOT 1 OPEN

I also notice there is assembly language at video_gen.cpp.

__asm__ __volatile__ (
      //save PORTB
      "IN      r16,%[port]\n\t"
      "ANDI   r16,0xFD\n\t"

   ".macro output\n\t"
      "BLD   r16,0\n\t"            //output pin of the port here pinB0
      "OUT   %[port],r16\n"         //and on the last line of asm
   ".endm\n"

   ".macro pixeldelay\n\t"            // delay time for setting pixel width
      "NOP\n\t"                  // one can be removed for smaller
      "NOP\n\t"                  // pixels dont forget to remove the
      "NOP\n\t"                  // nop at the start of byteshift
   ".endm\n"

   ".macro byteshift\n\t"
      "NOP\n\t"
      "BST   __tmp_reg__,7\n\t"
      "output\n\t"
      "pixeldelay\n\t"
      "BST   __tmp_reg__,6\n\t"
      "output\n\t"
      "pixeldelay\n\t"
      "BST   __tmp_reg__,5\n\t"
      "output\n\t"
      "pixeldelay\n\t"
      "BST   __tmp_reg__,4\n\t"
      "output\n\t"
      "pixeldelay\n\t"
      "BST   __tmp_reg__,3\n\t"
      "output\n\t"
      "pixeldelay\n\t"
      "BST   __tmp_reg__,2\n\t"
      "output\n\t"
      "pixeldelay\n\t"
      "BST   __tmp_reg__,1\n\t"
      "output\n\t"
      "pixeldelay\n\t"
      "BST   __tmp_reg__,0\n\t"
      "output\n"
   ".endm\n\t"

      //output thingy
      "LD      __tmp_reg__,X+\n\t"      //1
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //2
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //3
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //4
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //5
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //6
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //7
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //8
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //9
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //10
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //11
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //12
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //13
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //14
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //15
      "byteshift\n\t"
      "LD      __tmp_reg__,X+\n\t"      //16
      "byteshift\n"

   "EndLine_%=:\n\t"
      "CBI   %[port],0\n\t"
   // assembly variable IO:
   :
   : [port] "i" (_SFR_IO_ADDR(PORTB)),
     "x" (screenptr)
   : "r16" // try to remove this clobber later...
   );
   renderLine+=16;