21

LTC1402

; The vectors in this table can be configured for processing external and

; internal software interrupts. The DSKplus debugger uses four interrupt

; vectors. These are RESET, TRAP2, INT2, and HPIINT.

; * DO NOT MODIFY THESE FOUR VECTORS IF YOU PLAN TO USE THE DEBUGGER *

;

; All other vector locations are free to use. When programming always be sure

; the HPIINT bit is unmasked (IMR=200h) to allow the communications kernel and

; host PC interact. INT2 should normally be masked (IMR(bit 2) = 0) so that the

; DSP will not interrupt itself during a HINT. HINT is tied to INT2 externally.

;

;

;

.mmregs

reset

goto #80h

;00; RESET * DO NOT MODIFY IF USING DEBUGGER *

nop

nop

nmi

return_enable

;04; non-maskable external interrupt

nop

nop

nop

trap2 goto #88h

;08; trap2 * DO NOT MODIFY IF USING DEBUGGER *

nop

nop

.space 52*16

;0C-3F: vectors for software interrupts 18-30

int0

return_enable

;40; external interrupt int0

nop

nop

nop

int1

return_enable

;44; external interrupt int1

nop

nop

nop

int2

return_enable

;48; external interrupt int2

nop

nop

nop

tint

return_enable

;4C; internal timer interrupt

nop

nop

nop

brint

goto breceive

;50; BSP receive interrupt

nop

nop

nop

bxint goto bsend

;54; BSP transmit interrupt

nop

nop

nop

trint

return_enable

;58; TDM receive interrupt

nop

nop

nop

txint

return_enable

;5C; TDM transmit interrupt

nop

nop

int3

return_enable

;60; external interrupt int3

nop

nop

nop

hpiint dgoto #0e4h

;64; HPIint * DO NOT MODIFY IF USING DEBUGGER *

nop

nop

.space 24*16

;68-7F; reserved area

.sect “buffer”

;Set address of BSP buffer for clearing

.space 16*0x800

.sect “result”

;Set address of result for clearing

.space 16*0x800

.end