************************** c54init.asm ********************
  .mmregs
  .include c54.inc
  .def c54init
  .ref bsp_out_buf,bsp_in_buf
  .text

  
c54init:

*SWWSR :SoftWare Wait-State Register Address 0028h
* -------------------------------------------------------------------------
* |     15     | 14    12 | 11      9 | 8        6 | 5       3 | 2      0 |
* -------------------------------------------------------------------------
* |   XPA      |  I/O     |  Data     |  Data      | Program   |  Program |
* -------------------------------------------------------------------------
*      0         111          001       000           001         000  
  STM #0x7208,SWWSR
*
*
*SWCR :SoftWare Wait-State Conctrol Register Address 002Bh
* -------------------------------------------------------------------------
* |                                                            |     0    |
* -------------------------------------------------------------------------
* |                                                            |    SWSM  |
* -------------------------------------------------------------------------
  STM #0,SWCR
*
*
*BSCR :Programabel bank-switching wait states Address 0029h
* -------------------------------------------------------------------------
* | 15       12  |      11      |  10    3 |    2   |    1     |    0     |
* -------------------------------------------------------------------------
* |    BNKCMP    |    PS–DS    | Reserved |   HBH  |    BH    |   EXIO   |
* -------------------------------------------------------------------------
  STM #0xF800,BSCR
*
*
*ST0
* ------------------------------------------------------------------------
* |  15   13   |   12   |   11   |   10   |   9   |      8        0      |
* ------------------------------------------------------------------------
* |    ARP     |   TC   |   C    |  OVA   |  OVB  |          DP          |
* ------------------------------------------------------------------------
  STM #0,ST0
*
*
*ST1
* ------------------------------------------------------------------------
* | 15 | 14  | 13 | 12 |  11  |10 |  9  |  8  |  7  |  6   |  5   |4   0 |
* ------------------------------------------------------------------------
* |BRAF| CPL | XF | HM | INTM | 0 | OVM | SXM | C16 | FRCT | CMPT |  ASM |
* ------------------------------------------------------------------------
  STM #0x2b00,ST1    ;INTM=1  off interrupt
*
*
*PMST
* ------------------------------------------------------------------------
* | 15        7  |   6    |    5   |    4   |   3    |    2   |  1  |  0 |
* ------------------------------------------------------------------------
* |     IPTR     | MP/MC  |  OVLY  |  AVIS  |  DROM  | CLKOFF | SMUL|SST |
* ------------------------------------------------------------------------
* |0020 1111 1   |   0    |    1   |    0   |    0   |    0   |  0  | 0  |
* ------------------------------------------------------------------------
  STM #0xBfe4,PMST   ;Interrupt vector map Bf80
*
*
*IFR or IMR
* --------------------------------------------------------------------------------------------
* |15 14 | 13  |  12 |  11  |  10  |  9  |  8 |  7  |  6  |  5   |   4  |  3  |  2 | 1  |  0 |
* ---------------------------------------------------------------------------------------------
* |RES   |DMAC5|DMAC4|BXINT1|BRINT1|HPINT|INT3|TINT1|DMAC0|BXINT0|BRINT0|TINT0|INT2|INT1|INT0|
* |      |     |     |DMAC3 |DMAC2 |     |    |DMAC1|     |      |      |     |    |    |    |
* --------------------------------------------------------------------------------------------
  STM #0xFFFF,IFR
  STM #0x0488,IMR    ;Timer0 enabel interrupt
*         ;DMAC1  enabel interrupt
*         ;DMAC2  enabel interrupt
*CLKMD
* ------------------------------------------------------------------------
* | 15     12  |   11   | 10      3 |     2     |    1     |       0     |
* ------------------------------------------------------------------------
* |   PLLMUL   | PLLDIV | PLLCOUNT  | PLLON/OFF | PLLNDIV  |  PLLSTATUS  |
* ------------------------------------------------------------------------   
  STM #0,CLKMD
clkcon: LDM CLKMD,A
  AND #0x01,A
  BC clkcon,ANEQ
  STM #0x43ff,CLKMD    ;PLL MUL=(4+1) *20=100MHz
*
*  
*TCR
* ------------------------------------------------------------------------
* | 15        12 |   11   |    10  | 9   6  |   5    |    4   |  3     0 |
* ------------------------------------------------------------------------
* |     Revd     | soft   | free   |  PSC   |  TRB   |  TSS   |   TDDR   |
* ------------------------------------------------------------------------  
  STM #0x0010,TCR1    ;timer1  stop
  STM #0x0010,TCR     ;TSS=1 Timer stop
  STM #12800,PRD
  STM #0x0020,TCR
*
*
*
******************************* McBSP1 ********************************
*    
  STM #PCR1,SPSA1
  STM #0x0f70,SPSD1   ;0000 1111 0111 0000
  
  STM #RCR11,SPSA1
  STM #0x0000,SPSD1   ;0000 0000 0000 0000
  
  STM #RCR21,SPSA1
  STM #0x0018,SPSD1   ;0000 0000 0001 1000: 0018
*              0 0
  STM #XCR11,SPSA1
  STM #0x0000,SPSD1   ;0000 0000 0000 0000
  
  STM #XCR21,SPSA1
  STM #0x0018,SPSD1   ;0000 0000 0001 1000:0018
  
  STM #SRGR11,SPSA1
  STM #0x0731,SPSD1   ;0000 0111 0011 0001(100MHz:100/2.048=50=0X32)
*              

  STM #SRGR21,SPSA1
  STM #0x30ff,SPSD1   ;0011 0000 1111 1111
  
  STM #SPCR11,SPSA1
  STM #0x2001,SPSD1   ;0010 0000 0000 0001

  STM #SPCR21,SPSA1
  STM #0x02c3,SPSD1   ;0000 0010 1100 0011

  STM #0xaa55,DXR11
******************************* DMA ********************************
*channel1:  
  STM #DMSRC1,DMSA   ;Source address register
  STM #bsp_out_buf,DMSDI
  STM #DXR11,DMSDI
  STM #8,DMSDI
  STM #0x60ff,DMSDI   ;0110 0000 1111 1111
  STM #0x5141,DMSDI   ;0101 0001 0100 0001
  
*channel2:
  STM #DRR11,DMSDI
  STM #bsp_in_buf,DMSDI
  STM #8,DMSDI
  STM #0x50ff,DMSDI   ;0101 0000 1111 1111
  STM #0x5045,DMSDI   ;0101 0000 0100 0101  
  
  STM #0xc686,DMPREC   ;1100 0110 1000 0110
  
  RSBX INTM
  NOP
  NOP  
    
  RET
  .end