vectors.asm

此程序为usb的驱动程序代码

*
**************************** vectors.asm ****************
*  Plug in the entry point at RESET in the interrupt vector table
*
*
		.include c54.inc
        .sect ".vectors"

        .ref  _c_int00    		; main progrom 
        .ref timer0 ,hpisys,usb_read

        .align  0x80            ; must be aligned on page boundary

RESET:                          ; reset vector
        B _c_int00              ; branch to main progrom
				NOP
		        NOP
nmi:    RETE                    ; enable interrupts and return from one
                NOP
                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:   		NOP
				CALL timer0
				RETE
                
rint0:  RETE
                NOP
                NOP
                NOP
xint0:  RETE
                NOP
                NOP
                NOP
DMAC0:	RETE
				NOP
				NOP
				NOP
DMAC1:	RETE						;tint1
				NOP			
				NOP
				NOP
						
int3:   
                NOP
                CALL usb_read
                RETE

HPINT:			NOP	
				CALL hpisys
				RETE
				
DMAC2:  RETE						;rint1
				NOP			
                NOP
                NOP
				
                NOP
xint1:  RETE	
				 
		        NOP
				NOP
				NOP
DMAC4:	RETE
				NOP
				NOP
				NOP

DMAC5:	RETE
				NOP
				NOP
				NOP
                .end