Freescale Semiconductor DSP56374 User Manual page 178

Using The Serial EEPROM Boot Mode
brclr #15,x:HCSR,*
movep #$0,x:HTX
brclr #19,x:HCSR,*
movep x:HRX,a1
brclr #15,x:HCSR,*
movep #$0,x:HTX
brclr #19,x:HCSR,*
movep x:HRX,a1
brclr #15,x:HCSR,*
movep #$0,x:HTX
jsr GetWordSPI
move a1,r0
jsr GetWordSPI
move a1,r1
jsr GetWordSPI
move a1,r2
jsr GetWordSPI
move a1,y0
jsr GetWordSPI
move a1,x1
jsr GetWordSPI
move a1,y1
;*** Get Data of P Memory ***
do y0,_endofP
jsr GetWordSPI
move a1,p:(r0)+
nop
nop
nop
_endofP
;*** Get Data of X Memory ***
do x1,_endofX
jsr GetWordSPI
move a1,x:(r1)+
nop
nop
nop
_endofX
;*** Get Data of Y Memory ***
do y1,_endofY
jsr GetWordSPI
move a1,y:(r2)+
nop
nop
nop
_endofY
jsr GetWordSPI
move a1,r0
jmp r0
GLOBAL GetWordSPI
GetWordSPI:
brclr #19,x:HCSR,*
move x:HRX,a1
A-8
; 0
; LSB: 0
; 0: Start Address of P Memory
; 1: Start Address of X Memory
; 2: Start Address of Y Memory
; 3: P Data length
; 4: X Data length
; 5: Y Data length
DSP56374 Users Guide, Rev. 1.2
Freescale Semiconductor