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Assembly Source for Algorithms
PRELIMINARY
A-23
Assembly Source Listings and Program Examples
PRELIMINARY
SPLK #04000h,FL_ST;FL_ST = FLASH1 CTRL REGS
FL0 RET
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* THIS SECTION PROGRAMS THE VALUE STORED IN FL_DATA INTO *
* THE FLASH ADDRESS DEFINED BY FL_ADRS. *
* *
* The following resources are used for temporary storage: *
* AR6 Parameter passed to Delay *
* SPAD1 Flash program and STOP commands *
* SPAD2 Flash program + EXE command. *
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EXE_PGM ; *
* *
CALL ARRAY ;ACCESS ARRAY *
* LOAD WADRS AND WDATA **
LACL FL_ADRS ;ACC => PROGRAM ADRS *
TBLW FL_DATA ;LOAD WADRS AND WDATA *
CALL REGS ;ACCESS FLASH REGS *
* SET UP WRITE COMMAND WORDS **
LACL PROTECT ;GET SEGMENT PROTECT MASK **
OR #WR_CMND ;OR IN WRITE COMMAND **
SACL SPAD1 ;SPAD1 = WRITE COMMAND **
OR #WR_EXE ;OR IN EXEBIN COMMAND **
SACL SPAD2 ;SPAD2 = WRITE EXE COMMAND **
LACL FL_ST ;ACC => (FLASH) *
* *
* ACTIVATE WRITE BIT **
TBLW SPAD1 ;EXECUTE COMMAND **
LAR AR6,#D10 ;SET DELAY **
CALL DELAY,*,AR6 ;WAIT **
* SET EXEBIN BIT **
TBLW SPAD2 ;EXECUTE COMMAND **
LAR AR6,#D100 ;SET DELAY **
CALL DELAY,*,AR6 ;WAIT **
* STOP WRITE OPERATION *
SPLK #0,SPAD1 ;SHUT DOWN WRITE OPERATION *
TBLW SPAD1 ;EXECUTE COMMAND *
TBLW SPAD1 ;EXECUTE COMMAND *
LAR AR6,#D10 ;SET DELAY *
CALL DELAY,*,AR6 ;WAIT *
* *
RET ;RETURN TO CALLING SEQUENCE *
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* ACTIVATE VER0 ON FLASH READS *
* LOADS FLASH WORD AT ADDR FL_ADRS TO FL_DATA. *
* Uses SPAD1 for temporary storage of flash commands. *
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SET_RD_VER0 ; *
CALL REGS ;ACCESS FLASH REGISTERS *