Motorola SC140 user manual Intermediate version Compromise between Memory and Speed

Compiler Support on StarCore

Exercise 6:

Intermediate version: Compromise between Memory and Speed

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

*	MOTOROLA INC.
*	SEMICONDUCTOR PRODUCTS SECTOR
*	COPYRIGHT 1999 MOTOROLA INC.

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*	INTRODUCTION TO THE SC140 TOOLS
*	Developed by MOTOROLA SPS/NCSG/WISD

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/* Multi-sample technique Exercise on an FIR Filter */

#include <stdio.h> #include <prototype.h>

short a[12]={0x1000,0x2000,0x3000,0x4000,0x5000,0x6000, 0x7000,0x8000,0x9000,0xA000,0xB000,0xC000};

short input[32+11]={0,0,0,0,0,0,0,0,0,0,0, /* zero-padding */ 0x0100,0x0200,0x0300,0x0400,0x0500,0x0600,0x0700,0x0800, 0x0900,0x0A00,0x0B00,0x0C00,0x0D00,0x0E00,0x0F00,0x1000, 0x1100,0x1200,0x1300,0x1400,0x1500,0x1600,0x1700,0x1800, 0x1900,0x1A00,0x1B00,0x1C00,0x1D00,0x1E00,0x1F00,0x2000};

short y[32];

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

*** For reference, the following output should be observed after	***
*** running the code.	***
**********************************************************************
*	*
* y[0] = 0x0020	*
* y[1] = 0x0080	*
* y[2] = 0x0140	*
* y[3] = 0x0280	*
* y[4] = 0x0460	*
* y[5] = 0x0700	*
* y[6] = 0x0A80	*
* y[7] = 0x0D00	*
* y[8] = 0x0EA0	*
* y[9] = 0x0F80	*
* y[10] = 0x0FC0	*
* y[11] = 0x0F80	*
* y[12] = 0x0F40	*
* y[13] = 0x0F00	*
* y[14] = 0x0EC0	*
* y[15] = 0x0E80	*
* y[16] = 0x0E40	*
* y[17] = 0x0E00	*

Introduction to the SC140 Tools 31