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5-4 Hardware Specifications Rev.A
Confidential
I/O Map
The SR-600 system I/O map is PC/AT-compatible. The I/O address assignments are shown
below. The changes in the serial and parallel ports I/O addresses is available from the BIOS
setup program or Plug & Play function
.
Table 5-1 I/O Map
I/O address Description
Can be
changed Device
00h-1Fh DMA controller 1 (8237A)
✕
82371EB
20h-3Fh Interruption controller 1 (8259A)
✕
82371EB
40h-5Fh Timer/ Counter (8254)
✕
82371EB
60h-6Fh Keyboard controller (8042)
✕
FDC37B807
70h-7Fh Real time clock, NMI mask
✕
82371EB
90h-9Fh DMA page register
✕
82371EB
A0h-BFh Interruption controller 2 (8259A)
✕
82371EB
B2h-B3h Advanced Power Management Control
✕
82371EB
C0h-DFh DMA controller 2 (8237A)
✕
82371EB
F0h Co-processor error
✕
82371EB
170h-177h Hard disk controller (Secondary)
✕
82371EB
1F0h-1F7h Hard disk controller (Primary)
✕
82371EB
2E8h-2Efh Serial port 4 O FDC37B807
2F8h-2FFh Serial port 2 O FDC37B807
376h Hard disk controller (Secondary)
✕
82371EB
378h-37Fh Parallel port 1 (+400h can be used when in the ECP mode) O FDC37B807
3B0h-3DFh VGA register
✕
69000
3E8h-3EFh Serial port 3 O FDC37B807
3F0h-3F7h Floppy disk controller (excluding 3F6h)
✕
FDC37B807
3F6h Hard disk controller (Primary)
✕
82371EB
3F8h-3FFh Serial port 1 O FDC37B807
4D0h-4D1h Interruption edge/ Level control
✕
82371EB
CF8h-CFFh PCI configuration register (DWORD)
✕
82443BX
CF9h Reset control (Byte)
✕
82371EB
5000-5000Ch SMBUS I/O register
✕
82371EB