Remote Processing RPC-330 - Manual (Page 42)

EXTERNAL INTERRUPT SECTION 12
Page 12-2 RPC-330
Figure 12-1 Optically isolated and TTL interrup ts
PROGRAM EXAMPLE
The following program enables interrupts and goes to a
r o u ti ne to s er v ic e it . J um p e r H 2 [ 5- 6 ]. B r in g in g P 2- I N T
to ground causes an inter rupt.
10 ONITR 0, 500
30 GOTO 30
500 PRINT "Got Interrupt"
510 RETI
Line 510 is necessary to re-enable interrupts. If this line
is not executed, but a RETU RN is used, then the next
interrupt is disabled.