Technical Reference
Motherboard Resources
Memory Map
Table 8. System Memory Map
Address Range (decimal) | Address Range (hex) | Size | Description |
1024 K - 524288 K | 100000 – 1FFFFFFF | 511 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 ISA and 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 |
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DMA Channels
Table 9. DMA Channels
DMA Channel Number | Data Width |
0 | 8- or |
1 | 8- or |
2 | 8- or |
3 | 8- or |
4 |
|
5 | |
6 | |
7 | |
|
|
System Resource
Audio
Audio / parallel port
Diskette drive
Parallel port (for ECP or EPP)/audio
DMA controller
Open
Open
Open
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