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Table 1. Typical Port Addresses

Ports Device
000-01f dma
020-03f pic1
040-05f timer
060-06f keyboard
080-09f dma page reg
0a0-0bf pic2
0c0-0df dma2
0f0-0ff npu
1b0-1be mrv4
2f8-2ff serial (auto)
3c0-3df vga+
3f8-3ff serial (auto)
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