Intel Desktop Board D815EEA Product Guide
I/O Map
Table 29. I/O Map
Address (hex) | Size | Description | |
0000 | - 000F | 16 bytes | DMA controller |
0020 | - 0021 | 2 bytes | Programmable Interrupt Control (PIC) |
0040 | - 0043 | 4 bytes | System timer |
0060 |
| 1 byte | Keyboard controller |
0061 |
| 1 byte | System speaker |
0064 |
| 1 byte | Keyboard controller, CMD / STAT byte |
0070 | - 0071 | 2 bytes | System CMOS / Real Time Clock |
0072 | - 0073 | 2 bytes | System CMOS |
0080 | - 008F | 16 bytes | DMA controller |
0092 |
| 1 byte | Fast A20 and PIC |
00A0 - 00A1 | 2 bytes | PIC | |
00B2 - 00B3 | 2 bytes | APM control | |
00C0 - 00DF | 32 bytes | DMA | |
00F0 |
| 1 byte | Numeric data processor |
0170 | - 0177 | 8 bytes | Secondary IDE channel |
01F0 - 01F7 | 8 bytes | Primary IDE channel | |
One of these ranges: | Can vary from 1 byte | Audio / game port | |
0200 | - 0207 | to 8 bytes |
|
0208 | - 020F |
|
|
0210 | - 0217 |
|
|
0218 | - 021F |
|
|
One of these ranges: |
| Audio (Sound Blaster | |
0220 | - 022F | 16 bytes |
|
0240 | - 024F | 16 bytes |
|
0228 | - 022F* | 8 bytes | LPT3 |
0278 | - 027F* | 8 bytes | LPT2 |
02E8 - 02EF* | 8 bytes | COM4 / video (8514A) | |
02F8 - 02FF* | 8 bytes | COM2 | |
One of these ranges: | 8 bytes | ||
0320 | - 0327 |
|
|
0330 | - 0337 |
|
|
0340 | - 0347 |
|
|
0350 | - 0357 |
|
|
0376 |
| 1 byte | Secondary IDE channel command port |
0377, bits 6:0 | 7 bits | Secondary IDE channel status port | |
0378 | - 037F | 8 bytes | LPT1 |
0388- 038B | 6 bytes | AdLib† (FM synthesizer) | |
03B0 - 03BB | 12 bytes | Intel® 82815 - Memory Controller Hub (MCH) | |
03C0 - 03DF | 32 bytes | Intel 82815 - Memory Controller Hub (MCH) | |
03E8 - 03EF | 8 bytes | COM3 | |
continued
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