Intel D925XECV2 Product Specification - Page 58
Fixed I/O Map
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Intel Desktop Boards D925XECV2/D925XEBC2 Technical Product Specification 2.4 Fixed I/O Map Table 13. I/O Map Address (hex) Size Description 0000 - 00FF 0170 - 0177 01F0 - 01F7 256 bytes 8 bytes 8 bytes Used by the Desktop Board D925XECV2/D925XEBC2. Refer to the ICH6-R data sheet for dynamic addressing information. Secondary Parallel ATA IDE channel command block Primary Parallel ATA IDE channel command block 0228 - 022F (Note 1) 0278 - 027F (Note 1) 02E8 - 02EF (Note 1) 02F8 - 02FF (Note 1) 8 bytes 8 bytes 8 bytes 8 bytes LPT3 LPT2 COM4 COM2 0374 - 0377 0377, bits 6:0 0378 - 037F 03E8 - 03EF 03F0 - 03F5 03F4 - 03F7 03F8 - 03FF 4 bytes 7 bits 8 bytes 8 bytes 6 bytes 1 byte 8 bytes Secondary Parallel ATA IDE channel control block Secondary IDE channel status port LPT1 COM3 Diskette channel Primary Parallel ATA IDE channel control block COM1 04D0 - 04D1 LPTn + 400 0CF8 - 0CFB (Note 2) 0CF9 (Note 3) 0CFC - 0CFF FFA0 - FFA7 FFA8 - FFAF 2 bytes 8 bytes 4 bytes 1 byte 4 bytes 8 bytes 8 bytes Edge/level triggered PIC ECP port, LPTn base address + 400h PCI Conventional bus configuration address register Reset control register PCI Conventional bus configuration data register Primary Parallel ATA IDE bus master registers Secondary Parallel ATA IDE bus master registers Notes: 1. Default, but can be changed to another address range. 2. Dword access only. 3. Byte access only. NOTE Some additional I/O addresses are not available due to ICH6-R address aliasing. The ICH6-R data sheet provides more information on address aliasing. For information about Obtaining the ICH6-R data sheet Refer to Section 1.4 on page 19 58