中断服务程序.txt

里面是比较经典的汇编例子程序

Interrupt Service Routine (ISR)
.title “Interrupt Service Routine”
.mmregs
int1:
CONTEXT_STORE 		; push the contents of accumulators and registers on stack
STM #K_INT0,IMR 	; Unmask only INT0~
RSBX INTM 		; Enable all Interrupts
;
; Main Processing for Receive Interrupt 1
.
.
.
SSBX INTM 		; Disable all interrupts
CONTEXT_RESTORE 	; pop accumulators and registers
RETE 			; return and enable interrupts
.end