📄 test.s
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addi r9,32
decim_interp_coef:
#else
;******* load the 4 sets of filter coefficients ********************
; movi StartAddrHigh, 0x40 ; read from ROM
movi StartAddrHigh, DataSeg ; read from DRAM 10-13-98
movi ByteSize,0xfe ; 128 coefficients in total
movi ByteLocal, local_rate_filter
dmabr ratefilt ; adress in ROM of the rate filter
#endif //EFFECT
#if 1
;*******************************************************************
;********** init of echo *******************************************
;********** init buffers in DRAM to zero ***************************
movi AGRAdr0, 0x1000
movi AGRInc0, 0x2
movi AGRSiz0, 0xffff
movi r0, 1403
movi r1, 0x0
buffer_init:
movhf i0, r1
subi r0, 0x1
#ifdef EFFECT
bne buffer_init
#else //EFFECT
bnz buffer_init
#endif //EFFECT
#ifdef EFFECT
movi DMASize, 31
movi r0, 0x1000>>2
movi r1, HBASE>>2
loop 22, init_HBASE //704 words
mov LocalAddr, r0
dmawr r1
WaitDma
addi r0, 32
addi r1, 32
init_HBASE:
#else //EFFECT
; movi StartAddrHigh, 0x7
movi StartAddrHigh, DataSeg // 10-13-98
movi ByteSize, 0xaf4
movi ByteLocal, 0x1000
dmabw HBASE
#endif //EFFECT
;********** init of gain coefficients ******************************
movi r0, 13107
movh %g1, r0 ; NAP1
movh %g4, r0 ; NAP3
movi r0, 19661
movh %g2, r0 ; NAP2
movi r0, 9830
movh %g3, r0 ; OAP1
movi r0, 3277
movh %g5, r0 ; OAP2
movi r0, 1000 ; default value of feedback gain
movh %FBgain, r0
;********** init of the lowpass filter (feedback)*******************
#ifdef EFFECT
movi LocalAddr, LPFB>>2
movi DMASize, 7 ; 15 coefficients
movi r0, LPfilter
shr r0, 2
dmarr r0
WaitDma
#else //EFFECT
; movi StartAddrHigh, 0x40
movi StartAddrHigh, DataSeg // 10-13-98
movi ByteLocal, 0x500
movi ByteSize, 0x1c ; 15 coefficients
dmabr LPfilter
#endif //EFFECT
;********** init pointers on DRAM histories ************************
movi r0, DL1_START ; init of pointer on DL1 (M0=256+64)
movh %DL1_ptr, r0
movi r0, NAP1_START ; init of pointer on NAP1
movh %NAP1_ptr, r0
movi r0, NAP2_START ; init of pointer on NAP2
movh %NAP2_ptr, r0
movi r0, NAP3_START ; init of pointer on NAP3
movh %NAP3_ptr, r0
movi r0, OAP2_START ; init of pointer on OAP2
movh %OAP2_ptr, r0
#endif //1
;********************************************************************
;************** init of the keyshift algorithm **********************
movi BlockSkip, 0x0
#if ALG
;****** set up left_right flag **************************************
movi r0, 0x1
movh %left_right, r0 ; left channel first
;****** set up the key_change flag and count2 ***********************
movi r0, 0x0
movh %key_change, r0
movh %count2, r0
;****** set up the echo delay dram storage pointer ***********************
movh %ufon_on_counter, r0
movh %ufon_off_counter, r0
movh %energy_indicator, r0
movi r0,Decimated_echo_storge_start
movh %Echo_delay_ptr, r0
;****** load the value of key ***************************************
#ifdef EFFECT
#else //EFFECT
; movi StartAddrHigh, 0x40 ; access to ROM.
movi StartAddrHigh, DataSeg ; access to DRAM. 10-13-98
movi r0, key_val ; adress in main memory in bytes
movi ByteSize, 0x0 ; gets 1 coefficients
movi ByteLocal, key_value
; @ in loc mem to put the coefficients
dmabrr r0 ; start dma transfert
#endif //EFFECT
;****** load the filter coefficient in local memory ******************
#ifdef EFFECT
movi r0, coeffA>>2
movi r1, FIR_coeff ; adress in main memory in bytes
shr r1, 2 //to word addr
movi DMASize, 31 //32 words each
loop 15, init_coeff //480 words
mov LocalAddr, r0
dmarr r1 ;read data from DRAM
WaitDma
addi r0, 32
addi r1, 32
init_coeff:
#else //EFFECT
movi r0, FIR_coeff ; adress in main memory in bytes
movi ByteSize, 0x77e ; gets 960 coefficients
movi ByteLocal, localA_coeff
; @ in loc mem to put the coefficients
dmabrr r0 ; start dma transfert
#endif //EFFECT
;******* compute & store coeff of triangular window ******************
#ifdef EFFECT
movi r0, window1 //local addr
shr r0, 2
movi r1, window ; adress in main memory in bytes
shr r1, 2 //to word addr
movi DMASize, 31 //128 words
loop 4, init_window //128 words
mov LocalAddr, r0
dmarr r1 ;read data from DRAM
WaitDma
addi r0, 32
addi r1, 32
init_window:
#else //EFFECT
movi r0, window
movi ByteSize, 0x1fe ; gets 256 samples (255*2=0x1fe)
movi ByteLocal, localA_window
; @ in local memory for window coeff
dmabrr r0 ; start dma transfert
#endif //EFFECT
;******* initialisation of the pointer on search in DRAM *************
movi r1, LSBUF_START_low ;left channel
movh %Lsearch_ptr, r1
movi r1, RSBUF_START_low ; right channel
movh %Rsearch_ptr, r1
;****** initialisation of the loop counter, count ********************
movi r1, 0x1
movh %count, r1
;****** load the value of Dec, Length, Nb, (Nb-1)*Length *************
;****** depending on the value of key ********************************
;****** store result in r10,r8,r9 ************************************
movi r1, Key_default
movh %key_value, r1 ; key1=0
.if 0
movi r0, 0x1 //debug
movh %key_change, r0 //debug
movi r1, 8 //debug
movh %key_value, r1 //debug
.endif
#ifdef EFFECT
shl r1, 3 //*8, 8 bytes per entry
addi r1, table
shr r1, 2 //to word addr
movi DMASize, 1
movi LocalAddr, Dec>>2
dmarr r1 ;read data from DRAM
WaitDma
#else //EFFECT
multi r1, 8 ; computing the offset in the table
movi ByteSize, 6 ; (4-1)*2, 4 data to load
movi ByteLocal, Dec ; set the location in local memory
addi r1, table
dmabrr r1
#endif //EFFECT
//debug
//debug1: j debug1
movh r10, %Nb ; r10=Nb
movh r9, %Dec ; r9 = Dec
movh r8, %Length ; r8 = Length
;****** load the value of NDec, NLength, NNb, (NNb-1)*NLength ********
;****** depending on the value of key ********************************
;******* initializes the value of pos1 and deltap *******************
movi r0, 0
movh %Ldeltap, r0 ; Ldeltap = 0
movh %Rdeltap, r0 ; Rdeltap = 0
tstsi r8, 256*2
blt pos1_N ; if length >=N, pos1=N
movi r0,256*2
movh %pos1,r0 ; pos1=N
j pos1_3N
pos1_N:
movi r0,384*2
movh %pos1, r0 ; pos1=3*N/2
pos1_3N:
;******* initilializes the value of goal_pos_start *******************
movh r0, %pos1
addi r0, 0x1200 ; r0=pos1+N+0x1000
movh %Cgoal_start, r0
movh %Lgoal_start, r0
movh %Rgoal_start, r0
;******* Computes the effective length of search *********************
;******* Computes start position in this buffer **********************
;******* Computes end position of SBUF in DRAM (r12)******************
subi r4,r10,1 ; r4=Nb-1
mult r4,r4,r8 ; r4 =(Nb-1)*length
mult r3,r10, r8 ; r3=Nb*length
movi r1, LSBUF_START_low ;left channel
addh %LSEARCH_END,r1,r4 ; END=SBUF_START+(Nb-1)*length
movi r1, RSBUF_START_low ;right channel
addh %RSEARCH_END,r1,r4
addi r4, 0x1000 ; part B of memory....
movh %localsearch_ptr,r4; localsearch_ptr=(Nb-1)*length
subi r3, 2
#ifdef EFFECT
mov AGRAdr5, r4 ; a3 points at (Nb-1)*length
mov AGRSiz5, r3 ; size of search buffer=Nb*length-2
movi AGRInc5,2 ; increment on search buffer
#else //EFFECT
mov AGRAdr3, r4 ; a3 points at (Nb-1)*length
mov AGRSiz3, r3 ; size of search buffer=Nb*length-2
movi AGRInc3,2 ; increment on search buffer
#endif //EFFECT
;******* initialisation of the history of filter, and its pointer ****
#ifdef EFFECT
movi AGRAdr4, 0x1000
movi AGRInc4, 0x2
movi AGRSiz4, 0x2c
#else //EFFECT
movi AGRAdr2, 0x1000
movi AGRInc2, 0x2
movi AGRSiz2, 0x2c
#endif //EFFECT
movi r0, 0x0
; movi StartAddrHigh, 0x7
movi StartAddrHigh, DataSeg // 10-13-98
#ifdef EFFECT
movi r1, Lhistory ; DRAM address, ,left channel
shr r1, 2
movi LocalAddr, 0x1000>>2
movi DMASize, 11
loop 23, hist_init
movhf i4, r0
hist_init:
dmawr r1 ; left channel
WaitDma
movi LocalAddr, 0x1000>>2
movi r1, Rhistory
shr r1, 2
dmawr r1 ; right channel
WaitDma
#else //EFFECT
movi ByteLocal, 0x1000
movi ByteSize, 0x2c
loop 23, hist_init
movhf i2, r0
hist_init:
dmabwr r1 ; left channel
movi ByteLocal, 0x1000
movi ByteSize, 0x2c
movi r1, Rhistory
dmabwr r1 ; right channel
#endif //EFFECT
movi r0, 0x1000
; movi DirectBase, 0x7
// movi DirectBase, DataSeg // 10-13-98
movi DcacheBase, DataSeg //EFFECT
dsh r0, Lhist_point ; left channel
dsh r0, Rhist_point ; right channel
;; movh %1000, r0
;; movi StartAddrHigh, 0x7
;; movi ByteLocal, 0x1000
;; movi ByteSize, 0x2
;; dmabw Lhist_point
;; movi ByteSize, 0x2
;; dmabw Rhist_point
#endif //ALG
#ifndef LS380
;************** put first 2 stereo block in PCMOUTBUF *************
movi AGRAdr0, 0x0
movi AGRSiz0, 0xffff
movi AGRInc0, 0x2
movi r1, 0x0
loop 0, block1
movhf i0, r1
movhf i0, r1
block1:
; movi StartAddrHigh, 0x7
movi StartAddrHigh, DataSeg // 10-13-98
movi BlockSkip, 0x0 ; stereo
movi ByteSize, 0x3fe
movi ByteLocal, 0x0
movi r0, 0x9000 ; OUTBUF start address in DRAM
dmabwr r0
movi ByteSize, 0x3fe
movi ByteLocal, 0x0
movi r0, 0x9400 ; second block
dmabwr r0
#if 1 // 10-13-98 - audio will crash when reload disk, if this is enabled
movi ByteSize, 0x3fe
movi ByteLocal, 0x0
movi r0, 0x9800 ; third block
dmabwr r0
movi ByteSize, 0x3fe
movi ByteLocal, 0x0
movi r0, 0x9c00 ; fourth block
dmabwr r0
#endif // 10-13-98
#endif //LS380
//----------------------------------------------------------------
//ZhangWei:If HW_ECHO, GenIOMIS[0] = flag of microphone energy.
movi DcacheBase,MEM_SEG
nop
nop
dlw r0,USER_ICFG
nop
andi r0,ICFG_HWECHO_MASK
tsti r0,ICFG_HWECHO_MASK
bne end_mm_flag
nop
rlwi r0,GenIOMIS_Tri_State_Enable
nop
nop
ori r0,1
rswi r0,GenIOMIS_Tri_State_Enable
end_mm_flag:
//----------------------------------------------------------------
;*****************************************************************
;********** main loop ********************************************
;*****************************************************************
main_audio_task:
movi DcacheBase, DataSeg // 10-13-98
mov r0, TrapReg
// read data from DRAM to local buffer
// this part is not needed when karaoke function is cascaded
// with the MPEG audio decoder. But the memory map has to
// be changed
#ifndef EFFECT
jsr r27, SUB_read_data
#else //EFFECT
movi StartAddrHigh, DataSeg
movi DcacheBase, DataSeg
#endif //EFFECT
; check value command vector
jsr r11, SUB_command
// execute audio routines
//-----------------------------------------------------------------------------------------
//*******************************************************************************
//-----------------------------------------------------------------------------------------
nop
nop
nop
jsr r11,sound_equalizer
nop
nop
nop
jsr r27, SUB_PCM_OK
//-----------------------------------------------------------------------------------------
//*******************************************************************************
//-----------------------------------------------------------------------------------------
// update entry
#ifdef EFFECT
movi DcacheBase, MEM_SEG
la r0, main_audio_task
dsw r0,Audio_Effect_Entry
#else //EFFECT
la r0, main_audio_task
movw LWentry, r0 //change entry
#endif //EFFECT
j r31 //return to calling routine
//at top level
;********************************************************************
;********************************************************************
;;*******************************************************************
;;*********** process pcm out interrupt *****************************
;;*******************************************************************
SUB_PCM_OK:
#ifdef EFFECT
movh r10, %Nb ; r10=Nb
movh r9, %Dec ; r9 = Dec
movh r8, %Length ; r8 = Length
#endif //EFFECT
;******* this part only has to be done for both channels *************
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