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CA810 Motherboard Product Guide
I/O Map
Table 10. I/O Map
| Address (hex) | Size | Description | |
|
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|
|
|
0000 | - 000F | 16 bytes | DMA controller | |
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|
|
|
|
0020 | - 0021 | 2 bytes | Programmable Interrupt Control (PIC) | |
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|
|
|
|
0040 | - 0043 | 4 bytes | System timer | |
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|
|
|
|
0060 |
| 1 byte | Keyboard controller | |
|
|
|
|
|
0061 |
| 1 byte | System speaker | |
|
|
|
|
|
0064 |
| 1 byte | Keyboard controller, CMD/STAT byte | |
|
|
|
|
|
0070 | 2 bytes | System CMOS / Real Time Clock | ||
|
|
|
|
|
0072 | - 0073 | 2 bytes | CMOS Bank 1 | |
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|
|
|
|
0080 | - 0090 |
| DMA controller | |
|
|
|
|
|
0094 | – 009F |
| DMA controller | |
|
|
|
| |
| 00A0 - 00A1 | 2 bytes | PIC | |
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|
|
| |
| 00B2 - 00B3 | 2 bytes | APM control | |
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|
|
| |
| 00C0 - 00DE | 31 bytes | DMA | |
|
|
|
| |
| 00F0 – 00FF |
| Numeric data processor | |
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|
|
|
|
0170 | - 0177 | 8 bytes | Secondary IDE channel | |
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|
|
| |
| 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 |
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| |
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|
|
|
|
0220 | - 022F | 16 bytes | Audio (Sound Blaster | |
0240 | - 024F | 16 bytes | Audio (Sound Blaster | |
| 0240 | - 024F | 16 bytes | Audio (Sound |
0278 | - 027F* | 8 bytes | LPT2 | |
|
|
|
| |
0228 | - 022F* | 8 bytes | LPT3 | |
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|
|
| |
| 02E8 - 02EF* | 8 bytes | COM4/video (8514A) | |
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|
|
| |
| 02F8 - 02FF* | 8 bytes | COM2 | |
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|
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| |
| One of these ranges: | 8 bytes | ||
0320 | - 0327 |
|
| |
0330 | - 0337 |
|
| |
0340 | - 0347 |
|
| |
0350 | - 0357 |
|
| |
|
|
|
|
|
0376 |
| 1 byte | Secondary IDE channel command port | |
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|
|
|
continued
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