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Publication No.
500-9300007876-000
Rev. C.0
System Resources, Memory Mapping, and Registers 79
7.2 Register Settings
The following section provides an overview of the registers located in the I/O
address area of the XVR16.
NOTE
The address locations of the PCI devices, such as Ethernet, are not described in the following tables.
This is because the UEFI Firmware automatically configures all PCI devices.
7.2.1 Standard Register Settings
The standard register settings are equal to all standard PC/AT systems. The table
below provides an overview of the address ranges occupied by these registers.
Table 7-2 Standard Register Settings
I/O Address Range (Hex)
Function
$00H - $0FH
DMA Controller
$20H - $21H
Interrupt Controller
$40H - 43H
Counter / Timer
60H
Keyboard Controller
$61H
NMI Status and Control
$64H
Keyboard Controller
$70H - $71H
RTC, NMI Mask
$80H - $8FH
DMA Page Register
$A0H - $A1H
Interrupt Controller
$B2H - $B3H
Power Management
$C0H - $DEH
DMA Controller
$F0H - $F1H
Coprocessor
$170H - $177H
Secondary SATA
$1F0H - $1F7H
Primary SATA
$2E8H - $2EFH
COM port
a
$2F8H - $2FFH
COM port
a
$3E8H - $3EFH
COM port
a
$3F8H-$3FFH
COM port
a
$600H - $6FFH
XVR16 specific
b
a
Via setup four address ranges can be defined for the serial interfaces.
b
Used for onboard programmable options.