option.a

这是步进电机的程序

/*********************************************************************************************
* File：	option.a
* Author:	embest	
* Desc：	s3c44b0 option parameter
* History:	
*********************************************************************************************/

	.equ 	_ISR_STARTADDRESS,	0xc7fff00		/* GCS6:64M DRAM/SDRAM 	*/

	# BUSWIDTH; 16,32
    .global	BUSWIDTH
	.equ 	BUSWIDTH,	16

    .data
    .global	BDRAMTYPE
BDRAMTYPE:	
	.string	"SDRAM"

	# This value has to be TRUE on ROM program.
	# This value has to be FALSE in RAM program.
    .global PLLONSTART
	.equ	PLLONSTART, 1

	.global PLLCLK
	.equ 	PLLCLK,		64000000

.ifeq PLLCLK-64000000	
	.equ 	M_DIV,		56		/* Fin=8MHz Fout=64MHz */
	.equ 	P_DIV,		2
	.equ 	S_DIV,		1
.endif