HP Vectra XU 6/XXX HP Vectra XU 6/XXX - Guide to Optimization Performance - Page 45
DMA Channels, I/O Address Map, Address hexadecimal, Function, Interrupt Request Levels IRQs
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F0000h - FFFFFh (960 KB to 1024 KB) 100000h - F00000h (1024 KB to top of memory) DMA 0 DMA 1 DMA 2 DMA 3 DMA 4 DMA 5 DMA 6 DMA 7 Address (hexadecimal) 170h - 177h 1F0h - 1F7h 220h - 22Fh 278h - 27Fh 2E8h - 2EFh 2F8h - 2FFh 300h - 301h 330h - 331h 376h 377h 378h - 37Fh 388h - 38Bh 3E8h - 3EFh 3F0h - 3F5h 3F6h 3F7h 3F8h - 3FFh IRQ 0 IRQ 1 IRQ 2 IRQ 3 IRQ 4 IRQ 5 IRQ 6 IRQ 7 IRQ 8 IRQ 9 IRQ 10 IRQ 11 BIOS Area Extended MemoryUsed by software applications DMA Channels Available Available if not used by parallel port or audio subsystem Flexible disk drive controller Available if not used by audio subsystem Used to cascade DMA channels 0-3 Available if not used by audio subsystem Available Available if not used by audio subsystem I/O Address Map Function Integrated IDE controller (secondary channel) Integrated IDE controller (primary channel) SoundBlaster™ 16 audio subsystem (can be relocated) Parallel port 2 Serial port 4 Serial port 2 MPU-401 MIDI interface (can be relocated) MPU-401 MIDI interface (can be relocated) Integrated IDE controller (secondary channel) Integrated flexible disk controller Parallel port 1 Music controller (can be relocated) Serial port 3 Integrated flexible disk controller Integrated IDE controller (primary channel) Integrated flexible disk controller Serial port 1 Interrupt Request Levels (IRQs) System timer Keyboard controller Used to cascade IRQs 8-15 Available if not used by serial port Available if not used by serial port Available if not used by parallel port or audio subsystem Flexible disk drive controller Available if not used by parallel port or audio subsystem Real-time clock Available for PCI if not used by an ISA accessory board Available for PCI if not used by an ISA accessory board or audio subsystem Available for PCI if not used by an ISA accessory board