www.pudn.com > PMSM.zip > DSP281x_CSMPasswords.asm, change:2003-09-11,size:2481b


;//########################################################################### 
;// 
;// FILE:	DSP281x_CSMPasswords.asm 
;// 
;// TITLE:	DSP281x Code Security Module Passwords. 
;//  
;// DESCRIPTION: 
;// 
;//         This file is used to specify password values to 
;//         program into the CSM password locations in Flash 
;//         at 0x3F7FF8 - 0x3F7FFF. 
;// 
;//         In addition, the reserved locations 0x3F7F80 - 0X3f7ff5 are  
;//         all programmed to 0x0000 
;// 
;//########################################################################### 
;// 
;// Original source based on D.A. 
;//  
;//  Ver | dd mmm yyyy | Who  | Description of changes 
;// =====|=============|======|=============================================== 
;//  1.00| 11 Sep 2003 | L.H. | Original Release 
;//########################################################################### 
 
 
; The "csmpasswords" section contains the actual CSM passwords that will be 
; linked and programmed into to the CSM password locations (PWL) in flash.   
; These passwords must be known in order to unlock the CSM module.  
; All 0xFFFF's (erased) is the default value for the password locations (PWL). 
 
; It is recommended that all passwords be left as 0xFFFF during code 
; development.  Passwords of 0xFFFF do not activate code security and dummy  
; reads of the CSM PWL registers is all that is required to unlock the CSM.   
; When code development is complete, modify the passwords to activate the 
; code security module. 
 
      .sect "csmpasswds" 
 
      .int	0xFFFF		;PWL0 (LSW of 128-bit password) 
      .int	0xFFFF		;PWL1 
      .int	0xFFFF		;PWL2 
      .int	0xFFFF		;PWL3 
      .int	0xFFFF		;PWL4 
      .int	0xFFFF		;PWL5 
      .int	0xFFFF		;PWL6 
      .int	0xFFFF		;PWL7 (MSW of 128-bit password) 
	 
;---------------------------------------------------------------------- 
 
; For code security operation, all addresses between 0x3F7F80 and 
; 0X3f7ff5 cannot be used as program code or data.  These locations 
; must be programmed to 0x0000 when the code security password locations 
; (PWL) are programmed.  If security is not a concern, then these addresses 
; can be used for code or data.   
 
; The section "csm_rsvd" can be used to program these locations to 0x0000. 
 
        .sect "csm_rsvd" 
        .loop (3F7FF5h - 3F7F80h + 1) 
              .int 0x0000 
        .endloop 
 
;----------------------------------------------------------------------