TVoutColor_2013/INT_SP_FSC.cpp at main · NabeRMC/TVoutColor_2013

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/*****************************************************************************

System Name : TVoutColor_NTSC

File Name : INT_SP_FSC.cpp

Content :

Version : 0.0

CPU board : Arduino UNO/Duemilanove

Compiler : Arduino 1.0.4

History : 2013/10/04

*****************************************************************************/

/*----------------------------------------------------------------------------

;

; This program is free software; you can redistribute it and/or modify it

; under the terms of the GNU General Public License as published by the Free

; Software Foundation; either version 3 of the License, or (at your option)

; any later version.

;

; This program is distributed in the hope that it will be useful, but

; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY

; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License

; for more details.

;

; You should have received a copy of the GNU General Public License along

; with this program. If not, see <http://www.gnu.org/licenses/>.

;---------------------------------------------------------------------------*/

;/*=========================================================================*/

;/* Includes */

;/*=========================================================================*/

#include "defSYS.h"

#include "defINT.h"

;/*==========================================================================*/

;/* Program */

;/*==========================================================================*/

/*----- Memo ------------------------------------------------------------------

●C言語から呼び出されるアセンブラ関数

r0/r18-25/X/Z 自由に使用可能

ZH :R31

ZL :R30

XH :R27

XL :R26

r2-17/Y(r1) 変更する時は保存、復帰

●引数の渡し方

r8～r25が使用される。レジスタ2個ずつセットになっていて9セット使える。

大きな番号のレジスタペアから順番に使われる。

ZH :R31 IJM時の飛び先間接指定

ZL :R30

-----------------------------------------------------------------------

rjmp 2byte 2cycle jump enable -> PC -2047WORD/PC +2048WORD

jmp 4byte 3cycle jump enable -> 128kbyte

r26 H-Sync [0](-40IRE) COLBST0 [7](0IRE) COL_xx0

r27 COLBST1 [3](-20IRE) COL_xx1

r30 COLBST2 [7](0IRE) COL_xx2

r31 COLBST3 [11](+20IRE) COL_xx3

r20 work loop counter

r21 argument %5 Signal Data at 270degree

r22 argument %4 Signal Data at 180degree

r23 argument %3 Signal Data at 90degree

r24 argument %2 Signal Data at 0degree

r25 argument %1 Display Mode 0:out, 1:in Frame, 2:V-sync

r26 XL

r27 XH

r30 ZL

r31 ZH

----------------------------------------------------------------------------*/

#define OutBurst\

"out 0x08,r26\n\t"\

"out 0x08,r27\n\t"\

"out 0x08,r30\n\t"\

"out 0x08,r31\n\t"\

#define OutBlack\

"out 0x08,r26\n\t"\

#define OutColor\

"out 0x08,r24\n\t"\

"out 0x08,r23\n\t"\

"out 0x08,r22\n\t"\

"out 0x08,r21\n\t"\

void CINT::SP_FSC( UB Mode, UB Sig0, UB Sig90, UB Sig180, UB Sig270 )

{

__asm__ __volatile(

"mov r25,%0\n\t" // r25:Mode |

"mov r24,%1\n\t" // r24:Sig_0deg |

"cpi r25,2\n\t" // V-sync timing? 1cycle |

"brne NEXT\n\t" // if not V-sync 1cycle/2cycle |

"jmp EXIT3\n\t" // now V-sync

"NEXT:"

"ldi r26,7\n\t" // COLBST0 |

"out 0x08,r18\n\t" // 0IRE | 1

"ldi r27,3\n\t" // COLBST1 | 2

"ldi r30,7\n\t" // COLBST2 | 3

"ldi r31,11\n\t" // COLBST3 | 4

"mov r23,%2\n\t" // r23:Sig_90deg | 5

"mov r22,%3\n\t" // r22:Sig_180deg | 6

"mov r21,%4\n\t" // r21:Sig_270deg | 7

// "nop \n\t" // | 8

// "nop \n\t" // | 9

"cbi 0x0B,2\n\t" // for debug trigger PORTD.2 | 8,9

OutBurst // No.1 Color Burst --

OutBurst // No.2 --

OutBurst // No.3 --

OutBurst // No.4 --

OutBurst // No.5 --

OutBurst // No.6 --

OutBurst // No.7 --

OutBurst // No.8 --

OutBurst // No.9 --

"out 0x08,r26\n\t" // 0IRE | 1

"ldi r20,6\n\t" // | 2

"BP_LOOP:" // for Back Porch delay

"dec r20\n\t" // 1cycle ||

"brne BP_LOOP\n\t" // 1/2 (1+2)*5+(1+1)=17 || 19

"ldi r26,7\n\t" // 7:0IRE | 20

"cpi r25,0\n\t" // r25:Mode 1cycle | 21

"brne DISP\n\t" //if display frame 1cycle/2cycle | 22/23

"jmp EXIT\n\t" //out of frame then exit

"DISP:"

"nop \n\t" // | 24

OutBlack // | 25

OutBlack

// OutBlack

"nop \n\t"

"sbi 0x0B,2\n\t" // for debug trigger PORTD.2

OutColor

"EXIT:"

"EXIT2:"

"out 0x08,r26\n\t" // 0IRE

"EXIT3:"

: "r"(Mode) ,"r"(Sig0) ,"r"(Sig90),"r"(Sig180) ,"r"(Sig270)

);

}

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