3F8 - 3FF Serial Port (Primary)
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Chapter 8.5 System Memory Map
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Size Memory Address System Function
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640 KB 00000000 - 0009FFFF Base Memory
128 KB 000A0000 - 000BFFFF Video RAM
24 KB 000C0000 - 000C5FFF Video ROM
2 KB 000C6000 - 000C67FF Unused
6 KB 000C6800 - 000C7FFF Video ROM
96 KB 000C8000 - 000DFFFF Unused
64 KB 000E0000 - 000EFFFF Unused
64 KB 000F0000 - 000FFFFF System ROM
15 MB 00100000 - 00FFFFFF Host, PCI, or ISA Memory
Expansion
240 MB 01000000 - 0FFFFFFF Host or PCI Memory
Expansion
1792 MB 10000000 - 7FFFFFFF PCI Memory Expansion
16 MB 80000000 - 80FFFFFF ISA Memory Mapped I/O
Devices
2,080,384 KB 81000000 - FFFBFFFF PCI Memory Expansion
256 KB FFFC0000 - FFFFFFFF System ROM
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Chapter 8.6 Diskette Drives
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1.44 MB 1.2 MB
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Diskette Size 3.5-in 5.25-in
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Drive Height One-third One-third
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Drive Rotation (rpm) 300 360
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LED Read/Write Indicators Green Green
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Capacity Per Diskette
(high/low density) 1.44 MB/720 KB 1.2 MB/360 KB
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