Intel S975XBX2 Product Specification - Page 49
DMA Channels
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Technical Reference 2.1.2 Memory Map Table 10 lists the system memory map. Table 10. System Memory Map Address Range (decimal) Address Range (hex) 1024 K - 8388608 K 100000 - 1FFFFFFFF 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 8191 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 PCI Conventional 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 DMA Channels Table 11. DMA Channels DMA Channel Number 0 1 2 3 4 5 6 7 Data Width 8 or 16 bits 8 or 16 bits 8 or 16 bits 8 or 16 bits 8 or 16 bits 16 bits 16 bits 16 bits System Resource Open Parallel port Diskette drive Parallel port (for ECP or EPP) DMA controller Open Open Open 49