TDA7590 datasheet(34/40 Pages) STMICROELECTRONICS

34 / 40 page

Appendix 1

TDA7590

34/40

ENDIF

;------------------------------------------------------------------------

; Enable interrupts

;------------------------------------------------------------------------

Andi #$fc,mr

; set DSP interrupt priority level to 0

; Sets the Interrupt Mask bits in the SR

; to [00] (No exceptions masked)

IF 1

Bset #0,x:M_TCSR0

; Enable Timer0

Bset #0,x:M_TCSR1

; Enable Timer1

Bset #0,x:M_TCSR2

; Enable Timer2

ENDIF

move

#states,r3

move

#ntaps-1,m3

move

#coef,r4

move

#ntaps-1,m4

;------------------------------------------------------------------------

; Processor Loop

;------------------------------------------------------------------------

IF 0

LOOP

;

bset

#12,x:SCR_ADR

; start SCI transmit

nop

jmp LOOP

ENDIF

IF 1

LOOP

;

bset

#12,x:SCR_ADR

; start SCI transmit

mac

x0,y0,a

x:(r3)+,x0

y:(r4)+,y0

; generates variations on mean value of DAC

move

#$AAAAAA,x0

move

x0,x:$CAAAAA

; send data to expansion port

move

x0,x:GPIODAT

; move PORTB pins

bset

#12,x:SCR_ADR

; start SCI transmit

mac

x0,y0,a

x:(r3)+,x0

y:(r4)+,y0

; generates variations on mean value of DAC

move

#$555555,x0

move

x0,x:$C55555

; send data to expansion port

move

x0,x:GPIODAT

; move PORTB pins

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