Intel D845GBV - Desktop Board Resources; Memory Map; DMA Channels; System Memory Map

Intel Desktop Boards D845GRG and D845GBV Product Guide
70
Desktop Board Resources
Memory Map
Table 32. System Memory Map
Address Range (decimal) Address Range (hex) Size Description
1024 K - 2097152 K 100000 - 7FFFFFF 2047 MB Extended Memory
960 K - 1024 K F0000 - FFFFF 64 KB Runtime BIOS
896 K - 960 K E0000 - EFFFF 64 KB Reserved
800 K - 896 K C8000 - DFFFF 96 KB Available high DOS memory (open to the
PCI bus)
640 K - 800 K A0000 - C7FFF 160 KB Video memory and BIOS
639 K - 640 K 9FC00 - 9FFFF 1 KB Extended BIOS data (movable by
memory manager software)
512 K - 639 K 80000 - 9FBFF 127 KB Extended conventional memory
0 K - 512 K 00000 - 7FFFF 512 KB Conventional memory
DMA Channels
Table 33. DMA Channels
DMA Channel Number Data Width System Resource
0 8 or 16 bits
1 8 or 16 bits Parallel port
2 8 or 16 bits Floppy drive
3 8 or 16 bits Parallel port (for ECP or EPP)
4 8 or 16 bits DMA controller
5 16 bits Open
6 16 bits Open
7 16 bits Open