Texas Instruments TMS320F20x/F24x DSP manual XOR Fldata, Bcnd PBEND,EQ, Pbend RET

Assembly Source for Algorithms

PRELIMINARY

LACL		FL_ST		;ACC => FLASH		*
SPLK		#VER0,SPAD1		;ACTIVATE VER0		*
TBLW		SPAD1		;EXECUTE COMMAND		*
LAR		AR6,#D10		;SET DELAY		*
CALL	DELAY,*,AR6		;WAIT			*
CALL	ARRAY		;ACCESS FLASH ARRAY			*
LACL		FL_ADRS		;POINT TO ADRS		*
TBLR		FL_DATA		;GET FLASH WORD 1x read		*
TBLR		FL_DATA		;	2x read	*
TBLR		FL_DATA		;	3x read	*
CALL	REGS		;ACCESS FLASH REGISTERS			*
LACL		FL_ST		;ACC => FLASH		*
SPLK		#STOP,SPAD1		;DEACTIVATE VER0		*
TBLW		SPAD1		;EXECUTE COMMAND		*
LAR		AR6,#D10		;SET DELAY		*
CALL	DELAY,*,AR6		;WAIT			*
CALL	ARRAY		;ACCESS FLASH ARRAY			*
RET		;RETURN TO CALLING SEQUENCE				*

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*PRG_BYTE: Programs hi or lo byte depending on*

*	byte mask (BASE_5).		*
*************************************************
PRG_BYTE:
	CALL	SET_RD_VER0	;Read word at VER0 level.
	MAR	*,AR3	;ARP ±> buffer addr index.
	LACL	*	;Get word to program.
	XOR	FL_DATA	;Xor with read±back value.
	AND	BASE_5	;Mask off hi/lo byte.
	BCND	PB_END,EQ	;If zero then done.
	XOR	#0FFFFh	;else, mask off good bits.
	SACL	FL_DATA	;New data.
	CALL	EXE_PGM	;PGM Pulse.
	SPLK	#0,BASE_0	;Set row done flag = 0(False).
PB_END RET

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A-24 PRELIMINARY