www.pudn.com > TMS320F2812_SCI.rar > CodeStartBranch.asm

*********************************************************************** 
* File: CodeStartBranch.asm 
* Devices: TMS320F2812, TMS320F2811, TMS320F2810 
* Author: David M. Alter, Texas Instruments Inc. 
* History: 
*   09/08/03 - original (D. Alter) 
*********************************************************************** 
 
WD_DISABLE	.set	1		;set to 1 to disable WD, else set to 0 
 
    .ref _c_int00 
 
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* Function: codestart section 
* 
* Description: Branch to code starting point 
*********************************************************************** 
    .sect "codestart" 
 
    .if WD_DISABLE == 1 
        LB wd_disable       ;Branch to watchdog disable code 
    .else 
        LB _c_int00         ;Branch to start of boot.asm in RTS library 
    .endif 
 
;end codestart section 
 
 
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* Function: wd_disable 
* 
* Description: Disables the watchdog timer 
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    .if WD_DISABLE == 1 
 
	.text 
wd_disable: 
	EALLOW					;Enable EALLOW protected register access 
    MOVZ DP, #7029h>>6      ;Set data page for WDCR register 
    MOV @7029h, #0068h      ;Set WDDIS bit in WDCR to disable WD 
	EDIS					;Disable EALLOW protected register access 
    LB _c_int00             ;Branch to start of boot.asm in RTS library 
 
    .endif 
 
;end wd_disable 
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	.end                    ; end of file CodeStartBranch.asm