option.s

来自「可以兼容MS-DOS的文件系统和指令的S3C2410平台的DOS部分源代码,加以」· S 代码 · 共 73 行

;===========================================
; NAME: OPTION.A
; DESC: Configuration options for .S files
; HISTORY:
; 02.28.2002: ver 0.0
;===========================================

;Start address of each stacks,
_STACK_BASEADDRESS	EQU 0x33ff0000  
_MMUTT_STARTADDRESS	EQU 0x33ff8000  
_ISR_STARTADDRESS	EQU 0x33ffff00

	GBLL 	PLL_ON_START  
PLL_ON_START	SETL 	{TRUE}


	GBLL	ENDIAN_CHANGE
ENDIAN_CHANGE	SETL	{FALSE}

	GBLA	ENTRY_BUS_WIDTH
ENTRY_BUS_WIDTH	SETA	16	


;BUSWIDTH = 16,32
	GBLA    BUSWIDTH	;max. bus width for the GPIO configuration
BUSWIDTH	SETA    32


	GBLA	FCLK
FCLK		SETA	202800000
    [	FCLK = 202800000	
M_MDIV	EQU	0xa1	
M_PDIV	EQU	0x3
M_SDIV	EQU	0x1
	]	
    [	FCLK = 20000000	
M_MDIV	EQU	0x20	;Fin=12.0MHz Fout=30.0MHz
M_PDIV	EQU	0x4
M_SDIV	EQU	0x2
    ]

    [	FCLK = 30000000	
M_MDIV	EQU	0x34	;Fin=12.0MHz Fout=30.0MHz
M_PDIV	EQU	0x4
M_SDIV	EQU	0x2
    ]

    [	FCLK = 50000000	
M_MDIV	EQU	0x5c	;Fin=12.0MHz Fout=50.0MHz
M_PDIV	EQU	0x4
M_SDIV	EQU	0x2
    ]

    [	FCLK = 60000000	
M_MDIV	EQU	0x70	;Fin=12.0MHz Fout=60.0MHz
M_PDIV	EQU	0x4
M_SDIV	EQU	0x2
    ]

    [	FCLK = 70000000	
M_MDIV	EQU	0x84	;Fin=12.0MHz Fout=70.0MHz
M_PDIV	EQU	0x4
M_SDIV	EQU	0x2
    ]

    [	FCLK = 75000000	
M_MDIV	EQU	0x8e	;Fin=12.0MHz Fout=75.0MHz
M_PDIV	EQU	0x4
M_SDIV	EQU	0x2
    ]

	END