Motorola DSP56367 User Manual page 170

Core Configuration
Operating Mode Register (OMR)
START
address
PATCH_OFSET
M_PAE
M_PROMS
M_PROME
sector size
different
;
; replace ROM code by PATCH
;
PATCH_LOOP
execution
ENDTEST
;
; patch data
;
6-4
list
equ $100
equ 128
equ 23
equ $ffafec
equ $ffafff
org P:START
move #M_PROMS,r0
bset #M_CE,sr
bset #M_PAE,omr
move #$800000,r1
move #128,n1
move #(M_PROMS+PATCH_OFSET),r2
dup 8
punlock (r1)+n1
endm
plock (r2)
move #PATCH_DATA_START,r1
do #(PATCH_DATA_END-PATCH_DATA_START+1),PATCH_LOOP
movem p:(r1)+,x0
movem x0,p:(r2)+
nop
jsr #M_PROMS
jmp ENDTEST
nop
nop
nop
nop
DSP56367
; main program starting
; patch offset
; Patch Enable
; ROM area Start
; ROM area End
; CacheEnable = 1
; PatchEnable = 1
; any external address
; 128 for 1K ICACHE,
; initialize TAGs to
; values
; lock patch's sector
; (start/mid/end)
; Do-loop restriction
; start ROM code
MOTOROLA