IEI Integration PM-1028 User Manual
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COM Port I/O address
COM Port
I/O address
COM1
Base Address + 00H
COM2
Base Address + 08H
COM3
Base Address + 10H
COM4
Base Address + 18H
COM5
Base Address + 20H
COM6
Base Address + 28H
COM7
Base Address + 30H
COM8
Base Address + 38H
2.5 COM Port IRQ selection
JP1: COM4 IRQ setting, JP2: COM8 IRQ setting
JP3: COM3 IRQ setting, JP4: COM7 IRQ setting
JP5: COM2 IRQ setting, JP6: COM6 IRQ setting
JP7: COM1 IRQ setting, JP8: COM5 IRQ setting
IRQ 1-2 3-4 5-6
7-8
9-10
11-12
13-14
15-16
3
ON OFF OFF
OFF
OFF
OFF
OFF
OFF
4
OFF
ON OFF
OFF
OFF
OFF
OFF
OFF
5
OFF OFF ON
OFF
OFF
OFF
OFF
OFF
7
OFF OFF OFF
ON
OFF
OFF
OFF
OFF
9
OFF OFF OFF
OFF
ON
OFF
OFF
OFF
10
OFF OFF OFF
OFF
OFF
ON OFF
OFF
11
OFF OFF OFF
OFF
OFF
OFF
ON OFF
12
OFF OFF OFF
OFF
OFF
OFF
OFF
ON
Default setting: COM1 – IRQ3, COM2 – IRQ4, COM3 – IRQ5,
COM4 – IRQ7, COM5 – IRQ9, COM6 – IRQ10, COM7 –
IRQ11COM8 – IRQ12
2.6 IRQ sharing mode selection
• JP10: IRQ sharing mode selection
Mode 13-14
15-16
*Independent IRQ Mode
ON
ON
COM1~COM8 share 1 IRQ (assigned by JP7)
OFF
ON