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Introduction
Identifying System Resources
1-22
Valid uses for memory addresses CC000-DFFFF
• Upper memory blocks (UMBs).
• PC Card memory windows.
System Input/Output Addresses (100-3FF)
170-177 Secondary hard disk drive controller (internal CD-ROM)
1F0-1F7 Internal hard disk
200-207 Joystick
220-22F Crystal sound
376 Secondary hard disk drive controller (internal CD-ROM)
378-37F LPT1 (printer port)
388-38B Sound
3B0-3BB VGA adapter
3C0-3DF VGA adapter
3E0-3E1 PCMCIA controller
3F0-3F5 Floppy controller
3F6 Primary hard disk drive controller
3F7 Floppy controller
3F8-3FF COM1 (serial port)
DMA Channels
0 Sound record
1 Sound playback
2 Floppy drive
3 LPT1 (ECP parallel port)
4 Cascade
5 Free
6 Free
7 Free