ConfigurationICP-PIII
2.1 I/O Mapped Peripherals
The original
All Inova CPU boards include peripheral devices requiring I/O address space on board and hence the BIOS automatically assigns the I/O address required by peripheral boards and PCI devices at boot time based on the requirements of each device. The assigned addresses can be determined by reading the configuration address space registers using special software tools.
Table 2.10 Legacy I/O Map (ISA Compatible)
I/O Address |
|
| Description | |
|
|
|
|
|
$000 | - $00F |
| 8237 | DMA controller #1 |
|
|
|
|
|
$020 | - $021 |
| 8259 | Master Interrupt Controller |
$040 | - $043 |
| 8254 Programmable Interrupt Timer | |
|
|
|
|
|
$060 | - $06F |
| 8042 | Keyboard Controller |
$070 Ð $071 |
| CMOS RAM, NMI Mask Reg., RTC | ||
|
|
| ||
$080 - $08B |
| DMA page registers | ||
$0A0 | - $0BF |
| 8259 | Slave Interrupt Controller |
|
|
|
| |
$0C0 Ð $0DF |
| 8237 | DMA Controller #2 | |
$0F0 |
| Coprocessor Error Ignored Register | ||
|
|
| ||
$170 - $177 | *) | Secondary Hard Disk Controller | ||
$1F0 - $1F8 | *) | Primary Hard Disk Controller | ||
|
|
| ||
$200 - $207 |
| Reserved (Game Port) | ||
$238 - $23B |
| Bus Mouse | ||
|
|
|
| |
$2E0 | - $2E7 |
| Reserved (GPIB) | |
$2E8 | - $2EF |
| Reserved (Serial Port) | |
|
|
| ||
$2F8 - $2FF | *) | Serial Port (COM2) | ||
$CF8 |
| PCI Configuration Address | ||
|
|
| ||
$CFC |
| PCI Configuration Data | ||
|
|
|
|
|
©2002 Inova Computers GmbH | Doc. PD00581013.004 |