.mmregs
  .global _main
   .sect ".vectors"
   .ref bsp_in_buf,bsp_out_buf
  .include c54.inc
  .include user.inc
        .align  0x80            ; must be aligned on page boundary

RESET:                          ; reset vector
        BD _main              ; branch to main progrom
 
          NOP
nmi:    nop                   ; enable interrupts and return from one
                rete
                NOP
                NOP                                     ;NMI~

                ; software interrupts
sint17 .space 4*16
sint18 .space 4*16
sint19 .space 4*16
sint20 .space 4*16
sint21 .space 4*16
sint22 .space 4*16
sint23 .space 4*16
sint24 .space 4*16
sint25 .space 4*16
sint26 .space 4*16
sint27 .space 4*16
sint28 .space 4*16
sint29 .space 4*16
sint30 .space 4*16

int0:   RETE
                NOP
                NOP
                NOP
int1:   RETE
                NOP
                NOP
                NOP
int2:   RETE
                NOP
                NOP
                NOP

tint:     
    RETE
    NOP
    nop
    nop
               
rint0:  RETE
                NOP
                NOP
                NOP
xint0:  RETE
                NOP
                NOP
                NOP
DMAC0: RETE
    NOP
    NOP
    NOP

DMAC1:   RETE
                NOP
                NOP
                NOP
      
int3:   RETE
                NOP
                NOP
                NOP
HPINT: RETE  
    NOP
    NOP
    NOP

DMAC2:     NOP
                CALL isp2    
    RETE
              
                               
xint1:  RETE 
    
          NOP
    NOP
    NOP
DMAC4: RETE
    NOP
    NOP
    NOP

DMAC5: RETE
    NOP
    NOP
    NOP
           .text    

************************** c54init.asm ********************
  

_main:  
 STM #0200H,SP
 nop
 stm #00f0h,ar3
 portw ar3,00h
 stm #04000h,ar3
 st #00h,*ar3

*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 #0FFFFh,IFR
  STM #0x0400,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 #110h,DMSDI
  STM #DXR11,DMSDI
  STM #16,DMSDI
  STM #0x60ff,DMSDI   ;0110 0000 1111 1111
  STM #0x5141,DMSDI   ;0101 0001 0100 0001
  
*channel2:
  STM #DRR11,DMSDI
  STM #100h,DMSDI
  STM #16,DMSDI
  STM #0x50ff,DMSDI   ;0101 0000 1111 1111
  STM #0x5045,DMSDI   ;0101 0000 0100 0101  
  
  STM #0xc686,DMPREC   ;1100 0110 1000 0110
  
  RSBX INTM

  
  stm #4000h,ar3  
loop6:  nop
        b loop6
*****************int service routine**********************
isp2:   pshm st0
  pshm st1
  pshm ag
  pshm ah
  pshm al
     pshm t
    
  stm #0fh,ar1
  stm #100h,ar2
  stm #110h,ar4
loop3:  ld *ar2+,t
        st t,*ar3+
        st t,*ar4+
        ;ld #7fffh,al
        banz loop3,*ar1-

  popm t
     popm al
     popm ah
     popm ag
     popm st1
     popm st0
     ret
    
isp1:       
     stm #01h,ar3
     portw ar3,00h
     nop
       

  .end