Intel DX79SI Intel Desktop Board DX79SI Technical Product Specification - Page 45
Connectors and Headers
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Technical Reference 2.1.2 Memory Map Table 11 lists the system memory map. Table 11. System Memory Map Address Range (decimal) Address Range (hex) 1024 K - 67100672 K 100000 - FFFFFFFFFH 960 K - 1024 K F0000 - FFFFF 896 K - 960 K E0000 - EFFFF 800 K - 896 K C8000 - DFFFF 640 K - 800 K 639 K - 640 K 512 K - 639 K 0 K - 512 K A0000 - C7FFF 9FC00 - 9FFFF 80000 - 9FBFF 00000 - 7FFFF Size 65528 MB 64 KB 64 KB 96 KB 160 KB 1 KB 127 KB 512 KB Description Extended memory Runtime BIOS Reserved Potential available high DOS memory (open to the Conventional PCI bus). Dependent on video adapter used. Video memory and BIOS Extended BIOS data (movable by memory manager software) Extended conventional memory Conventional memory 2.2 Connectors and Headers CAUTION Only the following connectors and headers have overcurrent protection: back panel and front panel USB, as well as IEEE 1394a. The other internal connectors and headers are not overcurrent protected and should connect only to devices inside the computer's chassis, such as fans and internal peripherals. Do not use these connectors or headers to power devices external to the computer's chassis. A fault in the load presented by the external devices could cause damage to the computer, the power cable, and the external devices themselves. Furthermore, improper connection of USB or 1394 header single wire connectors may eventually overload the overcurrent protection and cause damage to the board. This section describes the board's connectors. The connectors can be divided into these groups: • Back panel I/O connectors • Component-side I/O connectors and headers (see page 48) 45