XDEF _IntServer CODE SIGB_INT equ 14 SIGF_INT equ (1 << SIGB_INT) ; a1 points to interrupt_data _IntServer: move.l 4(a1),a5 ; interrupt_data.ca move.b 0(a5),d0 ; A_EVENTS and.b 1(a5),d0 ; A_ENABLE beq.s should_not_signal move.b #0,1(a5) move.l $4.w,a6 move.l #SIGF_INT,d0 move.l 0(a1),a1 ; interrupt_data.task jsr -324(a6) ; Signal() should_not_signal: moveq #0,d0 rts