fader.eve

DSP中YSS920B开发板工具程序

//           僒儞僾儖僾儘僌儔儉 fader.eve
//
// 忦審暘婒傪娷傓僒儞僾儖僾儘僌儔儉偱偡丅
// 偙偺僾儘僌儔儉偱偼僼僃乕僟乕 (fader) 傪幚尰偟偰偄傑偡丅
// SDI0乣3 偵擖椡偝傟偨怣崋傪丄僐儞僩儘乕儖儗僕僗僞偺 IOPORT0 偵傛偭偰
// Fade in / Fade out 偟丄SDO0乣3 偵弌椡偟傑偡丅
//     IOPORT0=0 偺偲偒 fade in丅
//     IOPORT0=1 偺偲偒 fade out丅
// Fade in / Fade out 偺僗僺乕僪偼丄學悢 Pstep丄Mstep 傪曄峏偡傞偙偲偵
// 傛傝挷愡偱偒傑偡丅
//
// 偙偺僾儘僌儔儉傪傾僙儞僽儔 EveAsm.exe 偱傾僙儞僽儖偡傞偙偲偵傛傝
// fader.datEve 偑嶌惉偝傟傑偡丅
//
// -----------------------------------------------------------------
//
//           Sample program  fader.eve
//
// This is the program including the branching.
// This program realizes the fader.
// SDI0-3 input signals are faded in / faded out by Control Register
// IOPORT0, and output from SDO0-3.
//      When IOPORT0=0, fade in.
//      When IOPORT0=1, fade out.
// The speed of fade in / fade out is adjusted by changing the coefficients
// Pstep and Mstep.
//
// fader.datEve is assemble from this program by executing EveAsm.exe.



// -----------------------------------------------------------------
// -----------------------------------------------------------------
// -----------------------------------------------------------------

#define ERAM_TYPE NO_ERAM             //奜晅 RAM 側偟

//============================================================
//                  EVE Program
//                       fader
//============================================================

// COEF define
	CDat	FADER		(-1, 0x0000);		// 曄摦學悢丅弶婜抣偼 0丅0x7FFF乣0x0000 偺娫偱曄摦丅
	CDat	Pstep		(-1, 0x0001);		// Fade In  帪偺 step 暆丅
	CDat	Mstep		(-1, 0xFFFF);		// Fade Out 帪偺 step 暆丅

// Inner DATA define
	DAdr	Dtmp		(0);				// 僥儞億儔儕梡

//------------------------------------------------------------
//       幚峴僐儅儞僪僽儘僢僋
//  	|   ERAM            |   BUS             |   MAC/JMP   
//------------------------------------------------------------
		;					REG0 = $0.5;		;								// REG0 = 0x4000 傪 set丅
//	----------------------------------------------------------------------
		;					;					if (IPORT0) jmp Fout;			// IOPORT0=1 偺偲偒偼 Fout 傊丅
//	------------------------
Fin:	;					Dtmp = REG0;		ACC0 = Dtmp		*FADER;			// IOPORT0=0 偺偲偒偼 Fade In丅
		;					;					ACC0+= Dtmp		*Pstep;			//   學悢 FADER 偵 Pstep 傪壛偊偨傕偺傪丄怴偟偄
		;					;					;								//   FADER 偲偡傞丅(FADER=FADER+Pstep)
		;					;					;								//   ACC 偵娷傑傟傞 overflow protect 婡擻
		;					;					;								//   偵傛傝 FADER 偼 0x7FFF 埲忋偵偼側傜側偄丅
		;					FADER = high(ACC0Ls1);	;
		;					;					jmp Fend;						//   Fend 傊丅
//	------------------------
Fout:	;					Dtmp = REG0;		ACC0 = Dtmp		*FADER;			// IOPORT0=1 偺偲偒偼 Fade Out丅
		;					;					ACC0+= Dtmp		*Mstep;			//   學悢 FADER 偵 Mstep 傪壛偊偨傕偺傪丄怴偟偄
		;					;					;								//   FADER 偲偡傞丅(FADER=FADER+Mstep)
		;					;					;
		;					;					;
		;					FADER = high(ACC0Ls1);	;
		;					;					if (ACC>=0) jmp Fend;			//   FADER+Mstep>=0 偺偲偒偼 Fend 傊丅
		;					FADER = high($ZERO);	;							//   FADER+Mstep<0  偺偲偒偼 FADER=0 偲偟偰 Fend 傊丅
//	----------------------------------------------------------------------
Fend:	;					Dtmp = IN0;			ACC0 = Dtmp		*FADER;			// OUT0=IN0*FADER
		;					Dtmp = IN1;			ACC0 = Dtmp		*FADER;			// OUT1=IN1*FADER
		;					Dtmp = IN2;			ACC0 = Dtmp		*FADER;			// OUT2=IN2*FADER
		;					Dtmp = IN3;			ACC0 = Dtmp		*FADER;			// OUT3=IN3*FADER
		;					OUT0 = ACC0L;		;
		;					OUT1 = ACC0L;		;
		;					OUT2 = ACC0L;		;
		;					OUT3 = ACC0L;		;
		;					Dtmp = IN4;			ACC0 = Dtmp		*FADER;			// OUT4=IN4*FADER
		;					Dtmp = IN5;			ACC0 = Dtmp		*FADER;			// OUT5=IN5*FADER
		;					Dtmp = IN6;			ACC0 = Dtmp		*FADER;			// OUT6=IN6*FADER
		;					Dtmp = IN7;			ACC0 = Dtmp		*FADER;			// OUT7=IN7*FADER
		;					OUT4 = ACC0L;		;
		;					OUT5 = ACC0L;		;
		;					OUT6 = ACC0L;		;
		;					OUT7 = ACC0L;		;
//	----------------------------------------------------------------------
		;					MPEND = $0.5;		;								// program 廔椆丅
		;					;					;
		;					;					;