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2.3.7 IRQ and Address Setting
The IRQ and I/O address range
of
COM3 and COM4
are
listed below:
COM3:
3E8H,
IRQ10 (Independent IRQ), IRQ10 (Share
IRQ)
COM4:
2E8H, IRQ5 (Independent
IRQ), IRQ10 (Share
IRQ)
Vector address
for share
IRQ:
1D0H
You
can
set “Share IRQ
＂
or “Independent IRQ
＂
by
the first switch
of
SW4.
Table 2.2: IRQ Setting via switch 1 at SW4
Switch 1 at SW4 setting Function
Shared IRQ (Default)
Independent IRQ
You
can
adjust the transmission rate
by
the second switch
of SW2.
Table 2.3: Speed Setting via switch 2 at SW4
Switch 2 at SW4 setting Function
Speed X 8*
Speed X 1 (Default)
* To increase
the
normal
baud
rates by eight times,
(e.g. if
115.2K bps is set,
the baud rate will be increased
to 921.6K
bps),
set switch 2 of SW2 to
“on
＂
UNO-2170 User Manual 12