Rev. C
Hardware Specifications 7-3
IR-320 Technical Reference Manual
I/O Map
The system I/O map is PC/AT-compatible, and the I/O address is allocated as listed in the table
below. Use either the BIOS setup program or Plug & Play function to change the serial and
parallel port addresses.
I/O map
I/O address
Description
Changeable?
Device
00h to 1Fh
DMA controller (8237A)
NO
82801BA
20h to 3Fh
Interrupt controller 1 (8259A)
NO
82801BA
40h to 5Fh
Timer / counter (8254)
NO
82801BA
60h to 6Fh
Keyboard controller (8042)
NO
W83627F
70h to 7Fh
Real-time clock, NMI mask
NO
82801BA
90h to 9Fh
DMA page register
NO
82801BA
A0h to BFh
Interrupt controller 2 (8259A)
NO
82801BA
B2h to B3h
Advanced Power Management control
NO
82801BA
C0h to DFh
DMA controller 2 (8237A)
NO
82801BA
F0h
Coprocessor error
NO
82801BA
170h to 177h
Hard disk controller (secondary)
NO
82801BA
1F0h to 1F7h
Hard disk controller (primary)
NO
82801BA
220h to 22Fh /
240h to 24Fh
Sound Blaster
YES
82801BA
2E8h to 2Efh
Serial port 4
YES
W83627F
2F8h to 2FFh
Serial port 2
YES
W83627F
376h
Hard disk controller (secondary)
NO
82801BA
378h to 37Fh
Parallel port 1
(+400h can be used when in the ECP mode)
YES
W83627F
388h to 38Bh
FM synthesizer (when a sound board is mounted)
NO
82801BA
3B0h to 3DFh
VGA register
NO
82810E2
3E8h to 3EFh
Serial port 3
YES
W83627F
3F0h to 3F7h
Floppy disk controller (excluding 3F6h)
NO
W83627F
3F6h
Hard disk controller (primary)
NO
82801BA
3F8h to 3FFh
Serial port 1
YES
W83627F
4D0h to 4D1h
Interruption edge / level control
NO
82801BA
CF8h to CFFh
PCI configuration register (DWORD)
NO
82810E2
CF9h
Reset control (byte)
NO
82801BA
4000-4037h
Power Management I/O Register
NO
82801BA
5000-5000Ch
SMBUS I/O register
NO
82801BA
Summary of Contents for IR-320
Page 1: ...Technical Reference Manual IR 320 Issued Date Issued by EPSON English 404368102 ...
Page 2: ......
Page 38: ...1 22 IR 320 System Overview Rev C ...
Page 260: ...4 80 Utilities Rev C ...
Page 294: ...5 34 BIOS Functions Rev C ...
Page 308: ...6 14 Device Diagnostics Utility Rev C Confidential ...
Page 324: ...A 4 Wake On LAN Rev C Confidential ...
Page 332: ...B 8 The IR 310 Compared to the IR 320 Rev C ...
Page 339: ......
Page 340: ...EPSON SEIKO EPSON CORPORATION ...